Mercurial > hg > audio-features-catalogue
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/af-catalogue.n3 Mon Feb 25 14:40:54 2013 +0000 @@ -0,0 +1,3567 @@ +@prefix af: <http://sovarr.c4dm.eecs.qmul.ac.uk/features/> . +@prefix dc: <http://purl.org/dc/elements/1.1/> . +@prefix owl: <http://www.w3.org/2002/07/owl#> . +@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . + +<http://sovarr.c4dm.eecs.qmul.ac.uk/features/4HzModulationEnergy> a owl:Class ; + af:appdomain "audio segmentation" ; + af:complexity "medium" ; + af:computation "Band-pass Filter (Bank)", + "Discrete Fourier Transform", + "Energy Spectral Density", + "Normalization", + "Regression", + "Root Mean Square", + "Windowing" ; + af:dimensions "1" ; + af:domain "modulation frequency" ; + af:feature "4HzModulationEnergy" ; + af:level "physical" ; + af:model "psychoacoustic" ; + af:temporalscale "interframe" ; + rdfs:subClassOf af:AudioFeature . + +<http://sovarr.c4dm.eecs.qmul.ac.uk/features/4HzModulationHarmonicCoefficients> a owl:Class ; + af:appdomain "audio segmentation" ; + af:complexity "medium" ; + af:computation "Autocorrelation", + "Band-pass Filter (Bank)", + "Discrete Cosine Transform", + "Sum, Weighted Sum", + "Windowing" ; + af:dimensions "1" ; + af:domain "modulation frequency" ; + af:feature "4HzModulationHarmonicCoefficients" ; + af:level "physical" ; + af:temporalscale "interframe" ; + rdfs:subClassOf af:AudioFeature . + +af:ADRess a owl:Class ; + dc:description "Azimuth Discrimination and Resynthesis (ADRess) implementation,which takes a stereo input (i.e. input is expected to be the output of a" ; + af:computedIn "Marsyas" ; + rdfs:subClassOf af:AudioFeature . + +af:ADRessSpectrum a owl:Class ; + dc:description "Takes the output of the ADRess (i.e. the stereo azimuth-frequencymaps) and outputs a single channel spectrum of the part of the freq-azimuth" ; + af:computedIn "Marsyas" ; + rdfs:subClassOf af:AudioFeature . + +af:AbsMax a owl:Class ; + dc:description "Calculate the maximum absolute value for each observationsignal (per slice)." ; + af:computedIn "Marsyas" ; + rdfs:subClassOf af:AudioFeature . + +af:AdaptiveSpectrogram a owl:Class ; + dc:description "Produce an adaptive spectrogram by adaptive selection from spectrograms at multiple resolutions" ; + af:computedIn "Vamp" ; + af:domain "time" ; + af:feature "Adaptive Spectrogram" ; + af:output "Dense" ; + af:source "Queen Mary, University of London" ; + rdfs:subClassOf af:AudioFeature . + +af:AdaptiveTimeFrequencyTransform a owl:Class ; + af:appdomain "music information retrieval" ; + af:complexity "medium" ; + af:computation "Adaptive Time Frequency Transform", + "Spectral binning" ; + af:dimensions "42" ; + af:domain "frequency" ; + af:feature "AdaptiveTimeFrequencyTransform" ; + af:level "physical" ; + af:temporalscale "global" ; + rdfs:subClassOf af:AudioFeature . + +af:AimBoxes a owl:Class ; + dc:description "'Box-cutting' routine to generate dense features" ; + af:computedIn "Marsyas" ; + rdfs:subClassOf af:AudioFeature . + +af:AimGammatone a owl:Class ; + dc:description "Slaney's gammatone filterbank" ; + af:computedIn "Marsyas" ; + rdfs:subClassOf af:AudioFeature . + +af:AimLocalMax a owl:Class ; + dc:description "Local maximum strobe criterion: decaying threshold with timeout" ; + af:computedIn "Marsyas" ; + rdfs:subClassOf af:AudioFeature . + +af:AimVQ a owl:Class ; + dc:description "Vector quantization for dense to sparse features" ; + af:computedIn "Marsyas" ; + rdfs:subClassOf af:AudioFeature . + +af:AmplitudeDescriptor a owl:Class ; + af:appdomain "environmental sound recognition" ; + af:complexity "low" ; + af:computation "Mean", + "Median", + "Spectral binning", + "Windowing" ; + af:dimensions "9" ; + af:domain "temporal" ; + af:feature "AmplitudeDescriptor" ; + af:level "physical" ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:AmplitudeModulation a owl:Class ; + dc:description "Tremelo and Grain description, according to [SE2005]_ and [AE2001]_." ; + af:computedIn "Yaafe" ; + rdfs:subClassOf af:AudioFeature . + +af:AreaMoments a owl:Class ; + dc:description "2D statistical method of moments" ; + af:computedIn "jMIR" ; + af:name "Area Method of Moments" ; + rdfs:subClassOf af:AudioFeature . + +af:AreaMomentsConstantQMFCC a owl:Class ; + dc:description "2D statistical method of moments of ConstantQ-based MFCCs" ; + af:computedIn "jMIR" ; + af:name "Area Method of Moments of ConstantQ-based MFCCs" ; + rdfs:subClassOf af:AudioFeature . + +af:AreaMomentsLogConstantQ a owl:Class ; + dc:description "2D statistical method of moments of the log of the ConstantQ transform" ; + af:computedIn "jMIR" ; + af:name "Area Method of Moments of Log of ConstantQ transform" ; + rdfs:subClassOf af:AudioFeature . + +af:AreaMomentsMFCC a owl:Class ; + dc:description "2D statistical method of moments of MFCCs" ; + af:computedIn "jMIR" ; + af:name "Area Method of Moments of MFCCs" ; + rdfs:subClassOf af:AudioFeature . + +af:AreaPolynomialApproximation a owl:Class ; + dc:description "coeffecients of 2D polynomial best describing the input matrtix." ; + af:computedIn "jMIR" ; + af:name "2D Polynomial Approximation" ; + rdfs:subClassOf af:AudioFeature . + +af:Asdf a owl:Class ; + af:computedIn "libXtract" ; + rdfs:subClassOf af:AudioFeature . + +af:Attack a owl:Class ; + dc:description "estimates the beginning of the attack phase of a note by locating the local minimum before the maximum corresponding to the onset" ; + af:computedIn "MIRToolbox" ; + af:tag "Timbre" ; + rdfs:comment "These can have start time *and end time*" ; + rdfs:subClassOf af:AudioFeature . + +af:AttackLeap a owl:Class ; + dc:description "estimates the amplitude difference between the beginning and the end of the attack phase" ; + af:computedIn "MIRToolbox" ; + af:tag "Timbre" ; + rdfs:subClassOf af:AudioFeature . + +af:AttackSlope a owl:Class ; + dc:description "average slope of attack phase, computed either as a simple ratio, or a Gaussian-weighted average to emphasise the middle of the attack" ; + af:computedIn "MIRToolbox" ; + af:tag "Timbre" ; + rdfs:subClassOf af:AudioFeature . + +af:Attacktime a owl:Class ; + af:computedIn "libXtract" ; + rdfs:subClassOf af:AudioFeature . + +af:AubioBeatTracker a owl:Class ; + dc:description "Estimate the musical tempo and track beat positions" ; + af:computedIn "Vamp" ; + af:domain "time" ; + af:feature "Aubio Beat Tracker" ; + af:source "Paul Brossier (method by Matthew Davies, plugin by Chris Cannam)" ; + rdfs:subClassOf af:AudioFeature . + +af:AubioNoteTracker a owl:Class ; + dc:description "Estimate note onset positions, pitches and durations" ; + af:computedIn "Vamp" ; + af:domain "time" ; + af:feature "Aubio Note Tracker" ; + af:output "Sparse" ; + af:source "Paul Brossier (plugin by Chris Cannam)" ; + rdfs:subClassOf af:AudioFeature . + +af:AubioOnsetDetector a owl:Class ; + dc:description "Estimate note onset times" ; + af:computedIn "Vamp" ; + af:domain "time" ; + af:feature "Aubio Onset Detector" ; + af:output "Sparse" ; + af:source "Paul Brossier (plugin by Chris Cannam)" ; + rdfs:subClassOf af:AudioFeature . + +af:AubioPitchDetector a owl:Class ; + dc:description "Track estimated note pitches" ; + af:computedIn "Vamp" ; + af:domain "time" ; + af:feature "Aubio Pitch Detector" ; + af:output "Sparse" ; + af:source "Paul Brossier (plugin by Chris Cannam)" ; + rdfs:subClassOf af:AudioFeature . + +af:AubioSilenceDetector a owl:Class ; + dc:description "Detect levels below a certain threshold" ; + af:computedIn "Vamp" ; + af:domain "time" ; + af:feature "Aubio Silence Detector" ; + af:source "Paul Brossier (plugin by Chris Cannam)" ; + rdfs:subClassOf af:AudioFeature . + +af:AubioYin a owl:Class ; + dc:description "Pitch detection using the YIN algorithm" ; + af:computedIn "Marsyas" ; + rdfs:subClassOf af:AudioFeature . + +af:AuditoryFilterBankTemporalEnvelopes a owl:Class ; + af:appdomain "music information retrieval" ; + af:complexity "medium" ; + af:computation "Band-pass Filter (Bank)", + "Energy Spectral Density", + "Root Mean Square", + "Windowing" ; + af:dimensions "62" ; + af:domain "modulation frequency" ; + af:feature "AuditoryFilterBankTemporalEnvelopes" ; + af:level "physical" ; + af:model "psychoacoustic" ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:AutoCorrelationPeaksIntegrator a owl:Class ; + dc:description "Feature transform that compute peaks of the autocorrelation function, outputs peaks and amplitude." ; + af:computedIn "Yaafe" ; + rdfs:subClassOf af:AudioFeature . + +af:AutocorrelationMFCCs a owl:Class ; + af:appdomain "speech recognition" ; + af:complexity "high" ; + af:computation "Autocorrelation", + "Discrete Cosine Transform", + "Discrete Fourier Transform", + "Logarithm", + "Low-pass Filter", + "Regression", + "Windowing" ; + af:dimensions "parameterized" ; + af:domain "cepstral" ; + af:feature "AutocorrelationMFCCs" ; + af:level "physical" ; + af:model "psychoacoustic" ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:BandPeriodicity a owl:Class ; + af:appdomain "audio segmentation" ; + af:complexity "medium" ; + af:computation "Autocorrelation", + "Band-pass Filter (Bank)", + "Root Mean Square", + "Sum, Weighted Sum", + "Windowing" ; + af:dimensions "4" ; + af:domain "modulation frequency" ; + af:feature "BandPeriodicity" ; + af:level "perceptual" ; + af:temporalscale "interframe" ; + rdfs:subClassOf af:AudioFeature . + +af:Bandwidth a owl:Class ; + af:appdomain "several" ; + af:complexity "low" ; + af:computation "Discrete Fourier Transform", + "Logarithm", + "Median", + "Regression", + "Windowing" ; + af:dimensions "1" ; + af:domain "frequency" ; + af:feature "Bandwidth" ; + af:level "perceptual" ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:BarandBeatTracker a owl:Class ; + dc:description "Estimate bar and beat locations" ; + af:computedIn "Vamp" ; + af:domain "time" ; + af:feature "Bar and Beat Tracker" ; + af:source "Queen Mary, University of London" ; + rdfs:subClassOf af:AudioFeature . + +af:Bars a owl:Class ; + af:computedIn "Vamp" ; + af:domain "time" ; + af:feature "Bars (Bar and Beat Tracker)" ; + af:output "Sparse" ; + af:source "Queen Mary, University of London" ; + rdfs:subClassOf af:AudioFeature . + +af:BassChromagram a owl:Class ; + af:computedIn "Vamp" ; + af:domain "frequency" ; + af:feature "Bass Chromagram (NNLS Chroma)" ; + af:output "Dense" ; + af:source "Matthias Mauch" ; + rdfs:subClassOf af:AudioFeature . + +af:BeatCount a owl:Class ; + af:computedIn "Vamp" ; + af:domain "time" ; + af:feature "Beat Count (Bar and Beat Tracker)" ; + af:output "Sparse" ; + af:source "Queen Mary, University of London" ; + rdfs:subClassOf af:AudioFeature . + +af:BeatHistogram a owl:Class ; + dc:description "A histogram showing the relative strength of different rhythmic periodicities (tempi) in a signal. Found by calculating the auto-correlation of the RMS.", + "BeatHistogram" ; + af:appdomain "music information retrieval" ; + af:complexity "medium" ; + af:computation "Autocorrelation", + "Discrete Wavelet Transform", + "Low-pass Filter", + "Root Mean Square", + "Spectral binning", + "Windowing" ; + af:computedIn "Marsyas", + "jMIR" ; + af:dimensions "6" ; + af:domain "modulation frequency" ; + af:feature "BeatHistogram" ; + af:level "perceptual" ; + af:name "Beat Histogram" ; + af:temporalscale "interframe" ; + rdfs:subClassOf af:AudioFeature . + +af:BeatHistogramFromPeaks a owl:Class ; + dc:description "BeatHistogramFromPeaks" ; + af:computedIn "Marsyas" ; + rdfs:subClassOf af:AudioFeature . + +af:BeatHistogramLabels a owl:Class ; + dc:description "The bin label, in beats per minute, of each beat histogram bin. Not useful as a feature in itself, but useful for calculating other features from the beat histogram." ; + af:computedIn "jMIR" ; + af:name "Beat Histogram Bin Labels" ; + rdfs:subClassOf af:AudioFeature . + +af:BeatSpectralDifference a owl:Class ; + af:computedIn "Vamp" ; + af:domain "time" ; + af:feature "Beat Spectral Difference (Bar and Beat Tracker)" ; + af:output "Sparse" ; + af:source "Queen Mary, University of London" ; + rdfs:subClassOf af:AudioFeature . + +af:BeatSum a owl:Class ; + dc:description "The sum of all entries in the beat histogram. This is a good measure of the importance of regular beats in a signal." ; + af:computedIn "jMIR" ; + af:name "Beat Sum" ; + rdfs:subClassOf af:AudioFeature . + +af:BeatTracking a owl:Class ; + dc:description "Beat tracking using a context dependant model." ; + af:computedIn "aubio" ; + rdfs:subClassOf af:AudioFeature . + +af:Beats a owl:Class ; + af:computedIn "Vamp" ; + af:domain "frequency", + "time" ; + af:feature "Beats (Aubio Beat Tracker)", + "Beats (Bar and Beat Tracker)", + "Beats (Tempo and Beat Tracker)" ; + af:output "Sparse" ; + af:source "Paul Brossier (method by Matthew Davies, plugin by Chris Cannam)", + "Queen Mary, University of London" ; + rdfs:subClassOf af:AudioFeature . + +af:Brightness a owl:Class ; + dc:description "The proportion of energy above a given frequency" ; + af:computedIn "MIRToolbox" ; + af:tag "Timbre" ; + rdfs:subClassOf af:AudioFeature . + +af:Cepstrum a owl:Class ; + dc:description "Feature transform that compute cepstrum coefficients of input feature frames. (use DCT II)" ; + af:computedIn "Yaafe" ; + rdfs:subClassOf af:AudioFeature . + +af:ChordEstimate a owl:Class ; + af:computedIn "Vamp" ; + af:domain "frequency" ; + af:feature "Chord Estimate (Chordino)" ; + af:output "Sparse" ; + af:source "Matthias Mauch" ; + rdfs:subClassOf af:AudioFeature . + +af:Chordino a owl:Class ; + dc:description "Chordino provides a simple chord transcription based on NNLS Chroma (as in the NNLS Chroma plugin). Chord profiles given by the user in the file chord.dict are used to calculate frame-wise chord similarities. A simple (non-state-of-the-art!) algorithm smoothes these to provide a chord transcription using a standard HMM/Viterbi approach." ; + af:computedIn "Vamp" ; + af:domain "frequency" ; + af:feature "Chordino" ; + af:source "Matthias Mauch" ; + rdfs:subClassOf af:AudioFeature . + +af:ChromaCENSFeatures a owl:Class ; + af:appdomain "music information retrieval" ; + af:complexity "medium" ; + af:computation "Band-pass Filter Bank", + "Low-pass Filter", + "Normalization", + "Root Mean Square", + "Windowing" ; + af:dimensions "12" ; + af:domain "frequency" ; + af:feature "ChromaCENSFeatures" ; + af:level "perceptual" ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:ChromaMeans a owl:Class ; + af:computedIn "Vamp" ; + af:domain "frequency" ; + af:feature "Chroma Means (Chromagram)" ; + af:output "Dense" ; + af:source "Queen Mary, University of London" ; + rdfs:subClassOf af:AudioFeature . + +af:Chromagram a owl:Class ; + dc:description "Extract a series of tonal chroma vectors from the audio", + "measures the energy at particular chroma within an nTET tuning system", + "shows the distribution of energy along the pitches or pitch classes" ; + af:appdomain "music information retrieval" ; + af:complexity "medium" ; + af:computation "Discrete Fourier Transform", + "Logarithm", + "Root Mean Square", + "Windowing" ; + af:computedIn "MIRToolbox", + "SuperCollider", + "Vamp" ; + af:dimensions "12" ; + af:domain "frequency" ; + af:feature "Chromagram", + "Chromagram (NNLS Chroma)" ; + af:level "perceptual" ; + af:output "Dense" ; + af:source "Matthias Mauch", + "Queen Mary, University of London" ; + af:tag "Tonality" ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:ChromagramandBassChromagram a owl:Class ; + af:computedIn "Vamp" ; + af:domain "frequency" ; + af:feature "Chromagram and Bass Chromagram (NNLS Chroma)" ; + af:output "Dense" ; + af:source "Matthias Mauch" ; + rdfs:subClassOf af:AudioFeature . + +af:Compactness a owl:Class ; + dc:description "A measure of the noisiness of a signal. Found by comparing the components of a window's magnitude spectrum with the magnitude spectrum of its neighbouring windows." ; + af:computedIn "jMIR" ; + af:name "Compactness" ; + rdfs:subClassOf af:AudioFeature . + +af:ComplexDomainMethodOnsetDetectionFunction a owl:Class ; + dc:description "Complex Domain Method onset detection function." ; + af:computedIn "aubio" ; + rdfs:subClassOf af:AudioFeature . + +af:ComplexDomainOnsetDetection a owl:Class ; + dc:description "Compute onset detection using a complex domain spectral flux method [CD2003]_." ; + af:computedIn "Yaafe" ; + rdfs:subClassOf af:AudioFeature . + +af:ConstantQ a owl:Class ; + dc:description "signal to frequency transform using exponential-spaced frequency bins." ; + af:computedIn "jMIR" ; + af:name "ConstantQ" ; + rdfs:subClassOf af:AudioFeature . + +af:ConstantQMFCC a owl:Class ; + dc:description "MFCCs directly caluclated from ConstantQ exponential bins" ; + af:computedIn "jMIR" ; + af:name "ConstantQ derived MFCCs" ; + rdfs:subClassOf af:AudioFeature . + +af:ConstantQSpectrogram a owl:Class ; + dc:description "Extract a spectrogram with constant ratio of centre frequency to resolution from the input audio" ; + af:computedIn "Vamp" ; + af:domain "frequency" ; + af:feature "Constant-Q Spectrogram" ; + af:output "Dense" ; + af:source "Queen Mary, University of London" ; + rdfs:subClassOf af:AudioFeature . + +af:CorrelationPattern a owl:Class ; + af:author "Klaus Seyerlehner" ; + af:computedIn "MIREX" ; + af:feature "Correlation Pattern" ; + af:source "MIREX 2012" ; + rdfs:subClassOf af:AudioFeature . + +af:Crest a owl:Class ; + dc:description "measures the \"crest factor\" of a time-domain signal, i.e. the ratio of the absolute peak to the absolute mean over a certain time period" ; + af:computedIn "SuperCollider", + "libXtract" ; + rdfs:subClassOf af:AudioFeature . + +af:CrossCorrelation a owl:Class ; + dc:description "Computes the cross correlation of an input." ; + af:computedIn "Marsyas", + "sMIRk" ; + rdfs:subClassOf af:AudioFeature . + +af:CyclicBeatSpectrum a owl:Class ; + af:appdomain "music information retrieval" ; + af:complexity "high" ; + af:computation "Comb Filter (Bank)", + "Derivation, Difference", + "Discrete Fourier Transform", + "Low-pass Filter", + "Root Mean Square", + "Windowing" ; + af:dimensions "parameterized" ; + af:domain "modulation frequency" ; + af:feature "CyclicBeatSpectrum" ; + af:level "perceptual" ; + af:temporalscale "interframe" ; + rdfs:subClassOf af:AudioFeature . + +af:DWPTbasedRhythmFeature a owl:Class ; + af:appdomain "music information retrieval" ; + af:complexity "medium" ; + af:computation "Autocorrelation", + "Discrete Wavelet Transform", + "Root Mean Square", + "Spectral binning", + "Windowing" ; + af:dimensions "parameterized" ; + af:domain "modulation frequency" ; + af:feature "DWPTbasedRhythmFeature" ; + af:level "perceptual" ; + af:temporalscale "interframe" ; + rdfs:subClassOf af:AudioFeature . + +af:Daub4 a owl:Class ; + dc:description "Daubechies4 WaveletStep" ; + af:computedIn "Marsyas" ; + rdfs:subClassOf af:AudioFeature . + +af:DaubechiesWaveletCoefficientHistogram a owl:Class ; + af:appdomain "music information retrieval" ; + af:complexity "medium" ; + af:computation "Discrete Wavelet Transform", + "Spectral binning", + "Windowing" ; + af:dimensions "28" ; + af:domain "frequency" ; + af:feature "DaubechiesWaveletCoefficientHistogram" ; + af:level "physical" ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:Dct a owl:Class ; + af:computedIn "libXtract" ; + rdfs:subClassOf af:AudioFeature . + +af:Decaytime a owl:Class ; + af:computedIn "libXtract" ; + rdfs:subClassOf af:AudioFeature . + +af:DecorrelatedFilterBanks a owl:Class ; + af:author "Shin-Cheol Lim" ; + af:computedIn "MIREX" ; + af:feature "Decorrelated Filter Banks" ; + af:source "MIREX" ; + rdfs:subClassOf af:AudioFeature . + +af:Decrease a owl:Class ; + dc:description "a measure of the amount of decrease in the signal energy" ; + af:computedIn "CLAM" ; + af:tag "Audio" ; + rdfs:subClassOf af:AudioFeature . + +af:DeltaSpectralPattern a owl:Class ; + af:author "Klaus Seyerlehner" ; + af:computedIn "MIREX" ; + af:feature "Delta Spectral Pattern" ; + af:source "MIREX 2012" ; + rdfs:subClassOf af:AudioFeature . + +af:Derivate a owl:Class ; + dc:description "Compute temporal derivative of input feature. The derivative is approximated by" ; + af:computedIn "Yaafe" ; + rdfs:subClassOf af:AudioFeature . + +af:Deviation a owl:Class ; + dc:description "Standard Deviation of each row of observations" ; + af:computedIn "Marsyas" ; + rdfs:subClassOf af:AudioFeature . + +af:Differencevector a owl:Class ; + af:computedIn "libXtract" ; + rdfs:subClassOf af:AudioFeature . + +af:DiscreteCosineTransform a owl:Class ; + dc:description "Extract the DCT of an audio signal" ; + af:computedIn "Vamp" ; + af:domain "time" ; + af:feature "Discrete Cosine Transform" ; + af:output "Dense" ; + af:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" ; + rdfs:subClassOf af:AudioFeature . + +af:DiscreteWaveletTransform a owl:Class ; + dc:description "Visualisation by scalogram" ; + af:computedIn "Vamp" ; + af:domain "time" ; + af:feature "Discrete Wavelet Transform" ; + af:output "Dense" ; + af:source "Queen Mary, University of London" ; + rdfs:subClassOf af:AudioFeature . + +af:DistanceMatrix a owl:Class ; + af:computedIn "Vamp" ; + af:domain "time" ; + af:feature "Distance Matrix (Similarity)" ; + af:output "Dense" ; + af:source "Queen Mary, University of London" ; + rdfs:subClassOf af:AudioFeature . + +af:DistancefromFirstChannel a owl:Class ; + af:computedIn "Vamp" ; + af:domain "time" ; + af:feature "Distance from First Channel (Similarity)" ; + af:output "Dense" ; + af:source "Queen Mary, University of London" ; + rdfs:subClassOf af:AudioFeature . + +af:DistortionDiscriminantAnalysis a owl:Class ; + af:appdomain "fingerprinting" ; + af:complexity "high" ; + af:computation "Logarithm", + "Modulated Complex Lapped Transform", + "Principal Component Analysis", + "Windowing" ; + af:dimensions "64" ; + af:domain "eigendomain" ; + af:feature "DistortionDiscriminantAnalysis" ; + af:level "physical" ; + af:temporalscale "interframe" ; + rdfs:subClassOf af:AudioFeature . + +af:Energy a owl:Class ; + dc:description "Compute energy as root mean square of an audio Frame.", + "compute the Energy of the input observations into one column*/", + "the squared sum of audio samples amplitudes", + "the squared sum of spectral power distribution values" ; + af:computedIn "CLAM", + "Marsyas", + "Yaafe" ; + af:tag "Audio", + "Spectral" ; + rdfs:subClassOf af:AudioFeature . + +af:EnergyBasedOnsetDetectionFunction a owl:Class ; + dc:description "This function calculates the local energy of the input spectral frame." ; + af:computedIn "aubio" ; + rdfs:subClassOf af:AudioFeature . + +af:EnhADRess a owl:Class ; + dc:description "Azimuth Discrimination and Resynthesis (EnhADRess) implementation,which takes a stereo input (i.e. input is expected to be the output of a" ; + af:computedIn "Marsyas" ; + rdfs:subClassOf af:AudioFeature . + +af:Envelope a owl:Class ; + dc:description "Extract amplitude envelope using hilbert transform, low-pass filtering and decimation." ; + af:computedIn "Yaafe" ; + rdfs:subClassOf af:AudioFeature . + +af:EnvelopeShapeStatistics a owl:Class ; + dc:description "Centroid, spread, skewness and kurtosis of each frame's amplitude envelope. For more details about moments, see :ref:Shape Statistics shapestatistics." ; + af:computedIn "Yaafe" ; + rdfs:subClassOf af:AudioFeature . + +af:EventDensity a owl:Class ; + dc:description "estimates the average frequency of events, i.e., the number of note onsets per second" ; + af:computedIn "MIRToolbox" ; + af:tag "Rhythm" ; + rdfs:subClassOf af:AudioFeature . + +af:F0 a owl:Class ; + af:computedIn "libXtract" ; + rdfs:subClassOf af:AudioFeature . + +af:FFTBinFrequencies a owl:Class ; + dc:description "The bin label, in Hz, of each power spectrum or magnitude spectrum bin. Not useful as a feature in itself, but useful for calculating other features from the magnitude spectrum and power spectrum." ; + af:computedIn "jMIR" ; + af:name "FFT Bin Frequency Labels" ; + rdfs:subClassOf af:AudioFeature . + +af:Failsafef0 a owl:Class ; + af:computedIn "libXtract" ; + rdfs:subClassOf af:AudioFeature . + +af:Feature a owl:Class ; + rdfs:subClassOf af:AudioFeature . + +af:FeatureMeans a owl:Class ; + af:computedIn "Vamp" ; + af:domain "time" ; + af:feature "Feature Means (Similarity)" ; + af:output "Dense" ; + af:source "Queen Mary, University of London" ; + rdfs:subClassOf af:AudioFeature . + +af:FeatureVariances a owl:Class ; + af:computedIn "Vamp" ; + af:domain "time" ; + af:feature "Feature Variances (Similarity)" ; + af:output "Dense" ; + af:source "Queen Mary, University of London" ; + rdfs:subClassOf af:AudioFeature . + +af:FilterbankMel a owl:Class ; + dc:description "Mel frequency filter bank coefficients. Set filter bank coefficients to Mel frequency bands" ; + af:computedIn "aubio" ; + rdfs:subClassOf af:AudioFeature . + +af:Flatnessdb a owl:Class ; + af:computedIn "libXtract" ; + rdfs:subClassOf af:AudioFeature . + +af:FractionOfLowEnergyWindows a owl:Class ; + dc:description "The fraction of the last 100 windows that has an RMS less than the mean RMS in the last 100 windows. This can indicate how much of a signal is quiet relative to the rest of the signal." ; + af:computedIn "jMIR" ; + af:name "Fraction Of Low Energy Windows" ; + rdfs:subClassOf af:AudioFeature . + +af:Frames a owl:Class ; + dc:description "Segment input signal into frames." ; + af:computedIn "Yaafe" ; + rdfs:subClassOf af:AudioFeature . + +af:FundamentalFrequency a owl:Class ; + dc:description "Extract the fundamental frequency of an audio signal" ; + af:computedIn "Vamp" ; + af:domain "time" ; + af:feature "Fundamental Frequency" ; + af:output "Dense" ; + af:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" ; + rdfs:subClassOf af:AudioFeature . + +<http://sovarr.c4dm.eecs.qmul.ac.uk/features/FundamentalFrequency(failsafe)> a owl:Class ; + dc:description "Extract the fundamental frequency of an audio signal (failsafe)" ; + af:computedIn "Vamp" ; + af:domain "time" ; + af:feature "Fundamental Frequency (failsafe)" ; + af:output "Dense" ; + af:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" ; + rdfs:subClassOf af:AudioFeature . + +af:GeometricMean a owl:Class ; + dc:description "the geometric mean for the spectral power values sequence" ; + af:computedIn "CLAM" ; + af:tag "Spectral" ; + rdfs:subClassOf af:AudioFeature . + +af:GeorgeTzanetakisModel a owl:Class ; + af:author "Klaus Seyerlehner" ; + af:computedIn "MIREX" ; + af:feature "George Tzanetakis Model" ; + af:source "MIREX 2012" ; + rdfs:subClassOf af:AudioFeature . + +af:HarmonicChangeValue a owl:Class ; + af:computedIn "Vamp" ; + af:domain "frequency" ; + af:feature "Harmonic Change Value (Chordino)" ; + af:output "Dense" ; + af:source "Matthias Mauch" ; + rdfs:subClassOf af:AudioFeature . + +af:HarmonicCoefficient a owl:Class ; + af:appdomain "audio segmentation" ; + af:complexity "low" ; + af:computation "Autocorrelation", + "Sum, Weighted Sum", + "Windowing" ; + af:dimensions "1" ; + af:domain "frequency" ; + af:feature "HarmonicCoefficient" ; + af:level "perceptual" ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:HarmonicConcentration a owl:Class ; + af:appdomain "music information retrieval" ; + af:complexity "medium" ; + af:computation "Discrete Fourier Transform", + "Energy Spectral Density", + "Root Mean Square", + "Windowing", + "Zero-/Level Crossing Detector" ; + af:dimensions "1" ; + af:domain "frequency" ; + af:feature "HarmonicConcentration" ; + af:level "perceptual" ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:HarmonicDerivate a owl:Class ; + af:appdomain "music information retrieval" ; + af:complexity "medium" ; + af:computation "Derivation, Difference", + "Discrete Fourier Transform", + "Logarithm", + "Windowing" ; + af:dimensions "parameterized" ; + af:domain "frequency" ; + af:feature "HarmonicDerivate" ; + af:level "perceptual" ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:HarmonicEnergyEntropy a owl:Class ; + af:appdomain "music information retrieval" ; + af:complexity "medium" ; + af:computation "Discrete Fourier Transform", + "Entropy", + "Windowing", + "Zero-/Level Crossing Detector" ; + af:dimensions "1" ; + af:domain "frequency" ; + af:feature "HarmonicEnergyEntropy" ; + af:level "perceptual" ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:HarmonicPitchClassProfile a owl:Class ; + dc:description "Return the instantaneous evolution of HPCP (Harmonic Pitch Class Profile) of a signal." ; + af:computedIn "Vamp" ; + af:domain "frequency" ; + af:feature "HPCP" ; + af:output "Dense" ; + af:source "Music Technology Group, Universitat Pompeu Fabra" ; + rdfs:subClassOf af:AudioFeature . + +af:HarmonicProminence a owl:Class ; + af:appdomain "environmental sound recognition" ; + af:complexity "medium" ; + af:computation "Autocorrelation", + "Windowing", + "Zero-/Level Crossing Detector" ; + af:dimensions "1" ; + af:domain "frequency" ; + af:feature "HarmonicProminence" ; + af:level "perceptual" ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:HarmonicSpectralFlux a owl:Class ; + dc:description "Cacluate the correlation bettween adjacent frames based peaks instead of spectral bins. Peak tracking is primitive - whe the number of bins changes, the bottom bins are matched sequentially and the extra unmatched bins are ignored.) definition = new FeatureDefinition(name, description, true, 1) dependencies = new String[] { Peak Detection, Peak Detection } offsets = new int[] { 0, -1 } } /** * Extract the peak based spectral flux from the window. * @param samples * The samples to extract the feature from. * @param sampling_rate * The sampling rate that the samples are encoded with. * @param other_feature_values * The values of other features that are needed to calculate this * value. The order and offsets of these features must be the * same as those returned by this class's getDependencies and * getDependencyOffsets methods respectively. The first indice * indicates the feature/window and the second indicates the * value. * @return The extracted feature value(s). * @throws Exception * Throws an informative exception if the feature cannot be * calculated. * @see jAudioFeatureExtractor.AudioFeatures.FeatureExtractor#extractFeature(double[], * double, double[][]) */ public double[] extractFeature(double[] samples, double sampling_rate, double[][] other_feature_values) { double[] result = new double[1] double[] old = other_feature_values[1] double[] now = other_feature_values[0] double x, y, xy, x2, y2 x = y = xy = x2 = y2 = 0.0 int peakCount = Math.min(old.length, now.length) for (int i = 0 i < peakCount i) { x = old[i] y = now[i] xy = old[i] * now[i] x2 = old[i] * old[i] y2 = now[i] * now[i] } double top = xy - (x * y) / peakCount double bottom = Math.sqrt(Math.abs((x2 - ((x * x) / peakCount)) * (y2 - ((y * y) / peakCount)))) result[0] = top / bottom return result } /** * Proviede a complete copy of this feature. Used to implement the prottype * pattern */ public Object clone() { return new HarmonicSpectralFlux() } }" ; + af:computedIn "jMIR" ; + af:name "Partial Based Spectral Flux" ; + rdfs:subClassOf af:AudioFeature . + +af:HarmonicSpectralSmoothness a owl:Class ; + dc:description "Peak Based Spectral Smoothness is calculated from partials, not frequency bins. It is implemented accortding to McAdams 99 System.getProperty(line.separator) System.getProperty(line.separator) McAdams, S. 1999." ; + af:computedIn "jMIR" ; + af:name "Peak Based Spectral Smoothness" ; + rdfs:subClassOf af:AudioFeature . + +af:HarmonicSpectrum a owl:Class ; + dc:description "Extract the harmonics from an audio spectrum" ; + af:computedIn "Vamp", + "libXtract" ; + af:domain "frequency" ; + af:feature "Harmonic Spectrum" ; + af:output "Dense" ; + af:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" ; + rdfs:subClassOf af:AudioFeature . + +af:HighFrequencyContent a owl:Class ; + dc:description "sum of the squared spectrum magnitude multiplied by the wave number of the bin" ; + af:computedIn "CLAM" ; + af:tag "Spectral" ; + rdfs:subClassOf af:AudioFeature . + +af:HighFrequencyContentOnsetDetectionFunction a owl:Class ; + dc:description "This method computes the High Frequency Content (HFC) of the input spectral frame. The resulting function is efficient at detecting percussive onsets" ; + af:computedIn "aubio" ; + rdfs:subClassOf af:AudioFeature . + +af:HistogramIntegrator a owl:Class ; + dc:description "Feature transform that compute histogram of input values" ; + af:computedIn "Yaafe" ; + rdfs:subClassOf af:AudioFeature . + +af:Hps a owl:Class ; + af:computedIn "libXtract" ; + rdfs:subClassOf af:AudioFeature . + +af:IBTINESCBeatTracker a owl:Class ; + dc:description "Estimates beat locations and tempo (off-line [default] and on-line modes of operation)" ; + af:computedIn "Vamp" ; + af:domain "frequency" ; + af:feature "IBT - INESC Beat Tracker" ; + af:output "Sparse" ; + af:source "Marsyas Plugins" ; + rdfs:subClassOf af:AudioFeature . + +af:Inharmonicity a owl:Class ; + dc:description "Extract the inharmonicity of an audio spectrum", + "the amount of partials that are not multiples of the fundamental frequency, takes into account the amount of energy outside the ideal harmonic series" ; + af:appdomain "music information retrieval" ; + af:complexity "medium" ; + af:computation "Autocorrelation", + "Median", + "Windowing", + "Zero-/Level Crossing Detector" ; + af:computedIn "MIRToolbox", + "Vamp" ; + af:dimensions "1" ; + af:domain "frequency" ; + af:feature "Inharmonicity" ; + af:level "perceptual" ; + af:output "Dense" ; + af:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" ; + af:tag "Pitch" ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:IntegralLoudness a owl:Class ; + af:appdomain "music information retrieval" ; + af:complexity "high" ; + af:computation "(Non-) Linear Weighting Function", + "Discrete Fourier Transform", + "Exponential Function", + "Logarithm", + "Root Mean Square", + "Windowing" ; + af:dimensions "1" ; + af:domain "frequency" ; + af:feature "IntegralLoudness" ; + af:level "perceptual" ; + af:model "psychoacoustic" ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:JointAcousticandModuluationFrequency a owl:Class ; + af:appdomain "several" ; + af:complexity "high" ; + af:computation "Discrete Fourier Transform", + "Discrete Wavelet Transform", + "Low-pass Filter", + "Regression", + "Root Mean Square", + "Windowing" ; + af:dimensions "parameterized" ; + af:domain "modulation frequency" ; + af:feature "JointAcousticandModuluationFrequency" ; + af:level "physical" ; + af:model "psychoacoustic" ; + af:temporalscale "interframe" ; + rdfs:subClassOf af:AudioFeature . + +af:Key a owl:Class ; + dc:description "The best candidate key" ; + af:computedIn "MIRToolbox", + "Vamp" ; + af:domain "time" ; + af:feature "Key (Key Detector)" ; + af:output "Sparse" ; + af:source "Queen Mary, University of London" ; + af:tag "Tonality" ; + rdfs:subClassOf af:AudioFeature . + +af:KeyDetector a owl:Class ; + dc:description "Estimate the key of the music" ; + af:computedIn "Vamp" ; + af:domain "time" ; + af:feature "Key Detector" ; + af:source "Queen Mary, University of London" ; + rdfs:subClassOf af:AudioFeature . + +af:KeyMode a owl:Class ; + af:computedIn "Vamp" ; + af:domain "time" ; + af:feature "Key Mode (Key Detector)" ; + af:output "Sparse" ; + af:source "Queen Mary, University of London" ; + rdfs:subClassOf af:AudioFeature . + +af:KeySOM a owl:Class ; + dc:description "Projects the chromagram into a self-organizing map" ; + af:computedIn "MIRToolbox" ; + af:tag "Tonality" ; + rdfs:subClassOf af:AudioFeature . + +af:KeyStrength a owl:Class ; + dc:description "The probability distribution across possible keys" ; + af:computedIn "MIRToolbox" ; + af:tag "Tonality" ; + rdfs:subClassOf af:AudioFeature . + +af:KeyStrengthPlot a owl:Class ; + af:computedIn "Vamp" ; + af:domain "time" ; + af:feature "Key Strength Plot (Key Detector)" ; + af:output "Dense" ; + af:source "Queen Mary, University of London" ; + rdfs:subClassOf af:AudioFeature . + +af:KeyTrack a owl:Class ; + dc:description "A (12TET major/minor) key tracker based on a pitch class profile of energy across FFT bins and matching this to templates for major and minor scales in all transpositions. It assumes a 440 Hz concert A reference. Output is 0-11 C major to B major, 12-23 C minor to B minor." ; + af:computedIn "SuperCollider" ; + rdfs:subClassOf af:AudioFeature . + +af:Krumhansl_key_finder a owl:Class ; + dc:description "Krumhansl-Schmuckler Key-Finding Algorithm" ; + af:computedIn "Marsyas" ; + rdfs:subClassOf af:AudioFeature . + +af:LineSpectralFrequencies a owl:Class ; + dc:description "Compute the Line Spectral Frequency (LSF) coefficients of a signal frame. Algorithm was adapted from ([TB2006]_, [SH1976]_)." ; + af:appdomain "several" ; + af:complexity "medium" ; + af:computation "Autoregression (Linear Prediction Analysis)", + "Percentile", + "Windowing" ; + af:computedIn "Yaafe" ; + af:dimensions "parameterized" ; + af:domain "frequency" ; + af:feature "LineSpectralFrequencies" ; + af:level "physical" ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:LinearPredictionCepstralCoefficients a owl:Class ; + dc:description "Convert LPC coefficients to Cepstrum coefficients.", + "Marsyas - Batch Feature Extract - Linear Prediction Cepstral Coefficients" ; + af:abbreviation "LPCC" ; + af:appdomain "speech recognition" ; + af:complexity "medium" ; + af:computation "Autoregression (Linear Prediction Analysis)", + "Band-pass Filter (Bank)", + "Cepstral Recursion Formula", + "Windowing" ; + af:computedIn "Marsyas", + "Vamp", + "libXtract" ; + af:dimensions "parameterized" ; + af:domain "cepstral", + "time" ; + af:feature "LinearPredictionCepstralCoefficients", + "Marsyas - Batch Feature Extract - Linear Prediction Cepstral Coefficients" ; + af:level "physical" ; + af:output "Dense" ; + af:source "Marsyas Plugins" ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:LinearPredictionZCR a owl:Class ; + af:appdomain "speech recognition" ; + af:complexity "low" ; + af:computation "Autoregression (Linear Prediction Analysis)", + "Spectral binning", + "Windowing" ; + af:dimensions "1" ; + af:domain "temporal" ; + af:feature "LinearPredictionZCR" ; + af:level "physical" ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:LinearPredictiveCoding a owl:Class ; + dc:description "Compute Warped LPC coefficients, Pitch and Power [STILL UNDER TESTING!].", + "Compute the Linear Predictor Coefficients (LPC) of a signal frame. It uses autocorrelation and Levinson-Durbin algorithm. see [JM1975]_.", + "Linear Prediction Coeffecients calculated using autocorrelation and Levinson-Durbin recursion." ; + af:abbreviation "LPC" ; + af:appdomain "speech recognition" ; + af:complexity "low" ; + af:computation "Autoregression (Linear Prediction Analysis)", + "Band-pass Filter (Bank)", + "Discrete Fourier Transform", + "Windowing" ; + af:computedIn "Marsyas", + "Yaafe", + "jMIR", + "libXtract", + "sMIRk" ; + af:dimensions "parameterized" ; + af:domain "frequency" ; + af:feature "LinearPredictiveCoding" ; + af:level "physical" ; + af:name "LPC" ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:Lnorm a owl:Class ; + af:computedIn "libXtract" ; + rdfs:subClassOf af:AudioFeature . + +af:LocalSingleGaussianModel a owl:Class ; + af:author "Klaus Seyerlehner" ; + af:computedIn "MIREX" ; + af:feature "Local Single Gaussian Model" ; + af:source "MIREX 2012" ; + rdfs:subClassOf af:AudioFeature . + +af:LocalTuning a owl:Class ; + af:computedIn "Vamp" ; + af:domain "frequency" ; + af:feature "Local Tuning (Tuning)" ; + af:output "Dense" ; + af:source "Matthias Mauch" ; + rdfs:subClassOf af:AudioFeature . + +af:LogAttackTime a owl:Class ; + dc:description "the base 10 logarithm of the rise time" ; + af:computedIn "CLAM" ; + af:tag "Audio" ; + rdfs:subClassOf af:AudioFeature . + +af:LogConstantQ a owl:Class ; + dc:description "logarithm of each bin of exponentially-spaced frequency bins." ; + af:computedIn "jMIR" ; + af:name "Log of ConstantQ" ; + rdfs:subClassOf af:AudioFeature . + +af:LogLikelihoodofChordEstimate a owl:Class ; + af:computedIn "Vamp" ; + af:domain "frequency" ; + af:feature "Log-Likelihood of Chord Estimate (Chordino)" ; + af:output "Dense" ; + af:source "Matthias Mauch" ; + rdfs:subClassOf af:AudioFeature . + +af:LogarithmicFluctuationPattern a owl:Class ; + af:author "Klaus Seyerlehner" ; + af:computedIn "MIREX" ; + af:feature "Logarithmic Fluctuation Pattern" ; + af:source "MIREX 2012" ; + rdfs:subClassOf af:AudioFeature . + +af:Loudness a owl:Class ; + dc:description "A perceptual loudness function which outputs loudness in sones; this is a variant of an MP3 perceptual model, summing excitation in ERB bands. It models simple spectral and temporal masking, with equal loudness contour correction in ERB bands to obtain phons (relative dB), then a phon to sone transform. The final output is typically in the range of 0 to 64 sones, though higher values can occur with specific synthesised stimuli.", + "Extract the loudness of an audio signal from its spectrum", + "The loudness coefficients are the energy in each Bark band, normalized by the overall sum. see [GP2004]_ and [MG1997]_ for more details." ; + af:computedIn "PsySound3", + "SuperCollider", + "Vamp", + "Yaafe", + "libXtract" ; + af:domain "frequency" ; + af:feature "Loudness" ; + af:output "Dense" ; + af:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" ; + rdfs:subClassOf af:AudioFeature . + +af:LowEnergy a owl:Class ; + dc:description "percentage of frames showing less than average energy" ; + af:computedIn "MIRToolbox" ; + af:tag "Dynamics" ; + rdfs:subClassOf af:AudioFeature . + +af:LowFreqEnergyRelation a owl:Class ; + dc:description "the ratio between the energy over 0-100 Hz band and the whole spectrum energy" ; + af:computedIn "CLAM" ; + af:tag "Spectral" ; + rdfs:subClassOf af:AudioFeature . + +af:MELODIAMelodyExtraction a owl:Class ; + dc:description "Estimates the melody pitch in polyphonic music (also good for homophonic and monophonic music). Segments without melody are indicated by zero or negative values. For further details please read: J. Salamon and E. Gomez, \"Melody Extraction from Polyphonic Music Signals using Pitch Contour Characteristics\", IEEE Transactions on Audio, Speech and Language Processing, 20(6):1759-1770, 2012. We would highly appreciate the above reference being cited in publications of work in which this plug-in was used." ; + af:computedIn "Vamp" ; + af:domain "time" ; + af:feature "MELODIA - Melody Extraction" ; + af:output "Dense" ; + af:source "Music Technology Group, Universitat Pompeu Fabra" ; + rdfs:subClassOf af:AudioFeature . + +<http://sovarr.c4dm.eecs.qmul.ac.uk/features/MELODIAMelodyExtraction(intermediatesteps)> a owl:Class ; + dc:description "Provides visualisations of the intermediate steps calculated by the melody extraction algorithm implemented in the MELODIA - Melody Extraction plug-in. For further details please read: J. Salamon and E. Gomez, \"Melody Extraction from Polyphonic Music Signals using Pitch Contour Characteristics\", IEEE Transactions on Audio, Speech and Language Processing, 20(6):1759-1770, 2012. We would highly appreciate the above reference being cited in publications of work in which this plug-in was used." ; + af:computedIn "Vamp" ; + af:domain "time" ; + af:feature "MELODIA - Melody Extraction (intermediate steps)" ; + af:source "Music Technology Group, Universitat Pompeu Fabra" ; + rdfs:subClassOf af:AudioFeature . + +af:MIDI a owl:Class ; + dc:description "estimates MIDI note value based on segmentation and pitch detection" ; + af:computedIn "MIRToolbox" ; + af:tag "Pitch" ; + rdfs:subClassOf af:AudioFeature . + +af:MPEG7AudioFundamentalFrequency a owl:Class ; + af:appdomain "several" ; + af:complexity "low" ; + af:computation "Autocorrelation", + "Sum, Weighted Sum", + "Windowing" ; + af:computedIn "MPEG-7" ; + af:dimensions "2" ; + af:domain "frequency" ; + af:feature "MPEG7AudioFundamentalFrequency" ; + af:level "perceptual" ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:MPEG7AudioHarmonicity a owl:Class ; + af:appdomain "several" ; + af:complexity "medium" ; + af:computation "Autocorrelation", + "Sum, Weighted Sum", + "Windowing" ; + af:computedIn "MPEG-7" ; + af:dimensions "2" ; + af:domain "frequency" ; + af:feature "MPEG7AudioHarmonicity" ; + af:level "perceptual" ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:MPEG7AudioSpectrumBasis a owl:Class ; + af:appdomain "environmental sound recognition" ; + af:complexity "high" ; + af:computation "Discrete Fourier Transform", + "Independent Component Analysis", + "Logarithm", + "Normalization", + "Regression", + "Singular Value Decomposition", + "Windowing" ; + af:computedIn "MPEG-7" ; + af:dimensions "parameterized" ; + af:domain "eigendomain" ; + af:feature "MPEG7AudioSpectrumBasis" ; + af:level "physical" ; + af:temporalscale "interframe" ; + rdfs:subClassOf af:AudioFeature . + +af:MPEG7AudioWaveform a owl:Class ; + af:complexity "low" ; + af:computation "Histogram", + "Sum, Weighted Sum", + "Windowing" ; + af:computedIn "MPEG-7" ; + af:dimensions "2" ; + af:domain "temporal" ; + af:feature "MPEG7AudioWaveform" ; + af:level "physical" ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:MPEG7LogAttackTime a owl:Class ; + af:appdomain "music information retrieval" ; + af:complexity "low" ; + af:computation "Logarithm", + "Power", + "Root Mean Square", + "Windowing" ; + af:computedIn "MPEG-7" ; + af:dimensions "1" ; + af:domain "temporal" ; + af:feature "MPEG7LogAttackTime" ; + af:level "physical" ; + af:temporalscale "global" ; + rdfs:subClassOf af:AudioFeature . + +af:MagnitudeKurtosis a owl:Class ; + af:computedIn "CLAM" ; + af:tag "Spectral" ; + rdfs:subClassOf af:AudioFeature . + +af:MagnitudeSkewness a owl:Class ; + af:computedIn "CLAM" ; + af:tag "Spectral" ; + rdfs:subClassOf af:AudioFeature . + +af:MagnitudeSpectrum a owl:Class ; + dc:description "A measure of the strength of different frequency components.", + "Compute frame's magnitude spectrum, using an analysis window (Hanning or Hamming), or not." ; + af:computedIn "Yaafe", + "jMIR" ; + af:name "Magnitude Spectrum" ; + rdfs:subClassOf af:AudioFeature . + +af:MandelEllis a owl:Class ; + af:computedIn "comirva" ; + rdfs:subClassOf af:AudioFeature . + +af:MaxArgMax a owl:Class ; + dc:description "Calculate k maximums and their positions" ; + af:computedIn "Marsyas" ; + rdfs:subClassOf af:AudioFeature . + +af:MaxMagFreq a owl:Class ; + dc:description "frequency of the maximum magnitude of the spectrum" ; + af:computedIn "CLAM" ; + af:tag "Spectral" ; + rdfs:subClassOf af:AudioFeature . + +af:MaxMin a owl:Class ; + dc:description "Calculate the maximum and minimum values for each observationsignal (per slice)." ; + af:computedIn "Marsyas" ; + rdfs:subClassOf af:AudioFeature . + +af:Mean a owl:Class ; + dc:description "Extract the mean of a range of values", + "Mean calculate the mean of each row of observations", + "the mean value of the absolute value of the audio samples amplitude" ; + af:computedIn "CLAM", + "Marsyas", + "Vamp", + "libXtract" ; + af:domain "frequency" ; + af:feature "Mean" ; + af:output "Dense" ; + af:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" ; + af:tag "Audio" ; + rdfs:subClassOf af:AudioFeature . + +af:MeanAbsoluteDeviation a owl:Class ; + dc:description "Calculates the mean absolute deviation" ; + af:computedIn "Marsyas" ; + rdfs:subClassOf af:AudioFeature . + +af:MeansofCoefficients a owl:Class ; + af:computedIn "Vamp" ; + af:domain "frequency" ; + af:feature "Means of Coefficients (Mel-Frequency Cepstral Coefficients)" ; + af:output "Dense" ; + af:source "Queen Mary, University of London" ; + rdfs:subClassOf af:AudioFeature . + +af:MeddisHairCell a owl:Class ; + dc:description "MeddisHairCell for auditory models" ; + af:computedIn "Marsyas" ; + rdfs:subClassOf af:AudioFeature . + +af:Median a owl:Class ; + dc:description "Median calculate the median of each row of observations" ; + af:computedIn "Marsyas" ; + rdfs:subClassOf af:AudioFeature . + +af:MelSpectrum a owl:Class ; + dc:description "Compute the Mel-frequencies spectrum [DM1980]_." ; + af:computedIn "Yaafe" ; + rdfs:subClassOf af:AudioFeature . + +af:MinArgMin a owl:Class ; + dc:description "Calculate k minimums and their positions" ; + af:computedIn "Marsyas" ; + rdfs:subClassOf af:AudioFeature . + +af:Mode a owl:Class ; + dc:description "Major vs. Minor, calculated as the strength difference between the best major and best minor key candidates" ; + af:computedIn "MIRToolbox" ; + af:tag "Tonality" ; + rdfs:subClassOf af:AudioFeature . + +af:ModifiedGroupDelay a owl:Class ; + af:appdomain "speech recognition" ; + af:complexity "medium" ; + af:computation "Discrete Cosine Transform", + "Discrete Fourier Transform", + "Group Delay Function", + "Low-pass Filter", + "Windowing" ; + af:dimensions "parameterized" ; + af:domain "frequency" ; + af:feature "ModifiedGroupDelay" ; + af:level "physical" ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:ModulationFrequencyVarianceDescriptor a owl:Class ; + af:author "Ponce", + "T. Lidy" ; + af:computedIn "MIREX" ; + af:feature "Modulation Frequency Variance Descriptor" ; + af:source "MIREX 2008" ; + rdfs:subClassOf af:AudioFeature . + +af:Moments a owl:Class ; + dc:description "Statistical Method of Moments of the Magnitude Spectrum." ; + af:computedIn "jMIR" ; + af:name "Method of Moments" ; + rdfs:subClassOf af:AudioFeature . + +af:Multiplicity a owl:Class ; + af:computedIn "PsySound3" ; + rdfs:subClassOf af:AudioFeature . + +af:MultiresolutionEntropy a owl:Class ; + af:appdomain "speech recognition" ; + af:complexity "medium" ; + af:computation "Discrete Fourier Transform", + "Entropy", + "Normalization", + "Regression", + "Windowing" ; + af:dimensions "parameterized" ; + af:domain "frequency" ; + af:feature "MultiresolutionEntropy" ; + af:level "perceptual" ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:NNLSChroma a owl:Class ; + dc:description "This plugin provides a number of features derived from a DFT-based log-frequency amplitude spectrum: some variants of the log-frequency spectrum, including a semitone spectrum derived from approximate transcription using the NNLS algorithm; and based on this semitone spectrum, different chroma features." ; + af:computedIn "Vamp" ; + af:domain "frequency" ; + af:feature "NNLS Chroma" ; + af:source "Matthias Mauch" ; + rdfs:subClassOf af:AudioFeature . + +af:NoiseRobustAuditoryFeature a owl:Class ; + af:appdomain "environmental sound recognition" ; + af:complexity "high" ; + af:computation "(Non-) Linear Weighting Function", + "Band-pass Filter Bank", + "Derivation, Difference", + "Discrete Cosine Transform", + "Logarithm", + "Low-pass Filter", + "Windowing" ; + af:dimensions "256" ; + af:domain "cepstral" ; + af:feature "NoiseRobustAuditoryFeature" ; + af:level "physical" ; + af:model "psychoacoustic" ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:Noisiness a owl:Class ; + dc:description "Extract the noisiness of an audio spectrum" ; + af:computedIn "Vamp", + "libXtract" ; + af:domain "frequency" ; + af:feature "Noisiness" ; + af:output "Dense" ; + af:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" ; + rdfs:subClassOf af:AudioFeature . + +af:Nonzerocount a owl:Class ; + dc:description "Extract the number of non-zero elements in an input spectrum" ; + af:computedIn "Vamp", + "libXtract" ; + af:domain "frequency" ; + af:feature "Non-zero count" ; + af:output "Dense" ; + af:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" ; + rdfs:subClassOf af:AudioFeature . + +af:NoteOnsetDetector a owl:Class ; + dc:description "Estimate individual note onset positions" ; + af:computedIn "Vamp" ; + af:domain "frequency" ; + af:feature "Note Onset Detector" ; + af:source "Queen Mary, University of London" ; + rdfs:subClassOf af:AudioFeature . + +af:NoteRepresentationofChordEstimate a owl:Class ; + af:computedIn "Vamp" ; + af:domain "frequency" ; + af:feature "Note Representation of Chord Estimate (Chordino)" ; + af:output "Sparse" ; + af:source "Matthias Mauch" ; + rdfs:subClassOf af:AudioFeature . + +af:OBSIR a owl:Class ; + dc:description "Compute log of :class:OBSI ratio between consecutive octave." ; + af:computedIn "Yaafe" ; + rdfs:subClassOf af:AudioFeature . + +af:OctaveBandSignalIntensity a owl:Class ; + dc:description "Compute Octave band signal intensity using a trigular octave filter bank ([SE2005]_)." ; + af:computedIn "Yaafe" ; + rdfs:subClassOf af:AudioFeature . + +af:OctaveBasedSpectralContrast a owl:Class ; + af:author "Shin-Cheol Lim" ; + af:computedIn "MIREX" ; + af:feature "Octave-based Spectral Contrast" ; + af:source "MIREX" ; + rdfs:subClassOf af:AudioFeature . + +af:Oddevenratio a owl:Class ; + af:computedIn "libXtract" ; + rdfs:subClassOf af:AudioFeature . + +af:OnsetDetectionFunction a owl:Class ; + dc:description "An onset detector for musical audio signals", + "Computes the onset detection function and detect peaks in these functions. When onsets are found above a given silence threshold, and after a minimum inter-onset interval, the output vector returned by aubio_onset_do is filled with 1. Otherwise, the output vector remains 0", + "These functions are designed to raise at notes attacks in music signals." ; + af:computedIn "SuperCollider", + "Vamp", + "aubio" ; + af:domain "frequency" ; + af:feature "Onset Detection Function (Note Onset Detector)", + "Onset Detection Function (Tempo and Beat Tracker)" ; + af:output "Dense" ; + af:source "Queen Mary, University of London" ; + rdfs:subClassOf af:AudioFeature . + +af:OrderedDistancesfromFirstChannel a owl:Class ; + af:computedIn "Vamp" ; + af:domain "time" ; + af:feature "Ordered Distances from First Channel (Similarity)" ; + af:output "Dense" ; + af:source "Queen Mary, University of London" ; + rdfs:subClassOf af:AudioFeature . + +af:PeakFinder a owl:Class ; + dc:description "All peaks that are within an order of magnitude of the highest point" ; + af:computedIn "jMIR" ; + af:name "Peak Detection" ; + rdfs:subClassOf af:AudioFeature . + +af:PeakPicker a owl:Class ; + dc:description "Peak picking utilities function" ; + af:computedIn "aubio" ; + rdfs:subClassOf af:AudioFeature . + +af:Peaker a owl:Class ; + dc:description "Pick peaks out of signal" ; + af:computedIn "Marsyas" ; + rdfs:subClassOf af:AudioFeature . + +af:PeakerOnset a owl:Class ; + dc:description "Detects if input contains a onset point" ; + af:computedIn "Marsyas" ; + rdfs:subClassOf af:AudioFeature . + +af:PerceptualLinearPrediction a owl:Class ; + af:appdomain "speech recognition" ; + af:complexity "high" ; + af:computation "(Non-) Linear Weighting Function", + "Autoregression (Linear Prediction Analysis)", + "Cepstral Recursion Formula", + "Discrete Cosine Transform", + "Discrete Fourier Transform", + "Regression", + "Windowing" ; + af:dimensions "parameterized" ; + af:domain "cepstral" ; + af:feature "PerceptualLinearPrediction" ; + af:level "physical" ; + af:model "psychoacoustic" ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:PerceptualSharpness a owl:Class ; + dc:description "Compute the sharpness of :class:Loudness coefficients, according to [GP2004]_." ; + af:computedIn "Yaafe" ; + rdfs:subClassOf af:AudioFeature . + +af:PerceptualSpread a owl:Class ; + dc:description "Compute the spread of :class:Loudness coefficients, according to [GP2004]_." ; + af:computedIn "Yaafe" ; + rdfs:subClassOf af:AudioFeature . + +af:PhaseBasedMethodOnsetDetectionFunction a owl:Class ; + dc:description "Phase Based Method onset detection function." ; + af:computedIn "aubio" ; + rdfs:subClassOf af:AudioFeature . + +af:PhaseSpaceFeatures a owl:Class ; + af:appdomain "speech recognition" ; + af:complexity "high" ; + af:computation "Phase Space Embedding", + "Windowing" ; + af:dimensions "parameterized" ; + af:domain "phase space" ; + af:feature "PhaseSpaceFeatures" ; + af:level "physical" ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:Pitch a owl:Class ; + dc:description "Generic method for pitch detection", + "Pitch estimated via ACF, autocorrelation spectrum or cepstrum, or a combination" ; + af:appdomain "several" ; + af:complexity "low" ; + af:computation "Autocorrelation", + "Sum, Weighted Sum", + "Windowing" ; + af:computedIn "MIRToolbox", + "SuperCollider", + "aubio" ; + af:dimensions "1" ; + af:domain "frequency" ; + af:feature "Pitch" ; + af:level "perceptual" ; + af:tag "Pitch" ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +<http://sovarr.c4dm.eecs.qmul.ac.uk/features/PitchContours:All> a owl:Class ; + af:computedIn "Vamp" ; + af:domain "time" ; + af:feature "Pitch Contours: All (MELODIA - Melody Extraction (intermediate steps))" ; + af:output "Dense" ; + af:source "Music Technology Group, Universitat Pompeu Fabra" ; + rdfs:subClassOf af:AudioFeature . + +<http://sovarr.c4dm.eecs.qmul.ac.uk/features/PitchContours:Melody> a owl:Class ; + af:computedIn "Vamp" ; + af:domain "time" ; + af:feature "Pitch Contours: Melody (MELODIA - Melody Extraction (intermediate steps))" ; + af:output "Dense" ; + af:source "Music Technology Group, Universitat Pompeu Fabra" ; + rdfs:subClassOf af:AudioFeature . + +af:PitchDiff a owl:Class ; + dc:description "Difference between detected and expected pitch" ; + af:computedIn "Marsyas" ; + rdfs:subClassOf af:AudioFeature . + +af:PitchFastComb a owl:Class ; + dc:description "Pitch detection using a fast harmonic comb filter" ; + af:computedIn "aubio" ; + rdfs:subClassOf af:AudioFeature . + +af:PitchFftYin a owl:Class ; + dc:description "Pitch detection using a spectral implementation of the YIN algorithm" ; + af:computedIn "aubio" ; + rdfs:subClassOf af:AudioFeature . + +af:PitchHistogram a owl:Class ; + af:appdomain "music information retrieval" ; + af:complexity "medium" ; + af:computation "Autocorrelation", + "Root Mean Square", + "Spectral binning", + "Windowing" ; + af:dimensions "parameterized" ; + af:domain "frequency" ; + af:feature "PitchHistogram" ; + af:level "perceptual" ; + af:temporalscale "interframe" ; + rdfs:subClassOf af:AudioFeature . + +af:PitchMultiComb a owl:Class ; + dc:description "Pitch detection using multiple-comb filter" ; + af:computedIn "aubio" ; + rdfs:subClassOf af:AudioFeature . + +af:PitchProfile a owl:Class ; + af:appdomain "music information retrieval" ; + af:complexity "high" ; + af:computation "Constant Q Transform", + "Root Mean Square", + "Spectral binning", + "Sum, Weighted Sum", + "Windowing" ; + af:dimensions "12" ; + af:domain "frequency" ; + af:feature "PitchProfile" ; + af:level "perceptual" ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:PitchSchmitt a owl:Class ; + dc:description "Pitch detection using a Schmitt trigger" ; + af:computedIn "aubio" ; + rdfs:subClassOf af:AudioFeature . + +af:PitchSynchronousZCPA a owl:Class ; + af:appdomain "speech recognition" ; + af:complexity "medium" ; + af:computation "Autocorrelation", + "Band-pass Filter (Bank)", + "Logarithm", + "Root Mean Square", + "Spectral binning", + "Sum, Weighted Sum", + "Windowing" ; + af:dimensions "parameterized" ; + af:domain "temporal" ; + af:feature "PitchSynchronousZCPA" ; + af:level "physical" ; + af:model "psychoacoustic" ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:PitchYin a owl:Class ; + dc:description "Pitch detection using the YIN algorithm" ; + af:computedIn "aubio" ; + rdfs:subClassOf af:AudioFeature . + +af:PolyphonicTranscription a owl:Class ; + dc:description "Transcribe the input audio to estimated notes" ; + af:computedIn "Vamp" ; + af:domain "time" ; + af:feature "Polyphonic Transcription" ; + af:output "Sparse" ; + af:source "Queen Mary, University of London" ; + rdfs:subClassOf af:AudioFeature . + +af:Power a owl:Class ; + dc:description "compute the RMS Power of the input observations into one column*/" ; + af:computedIn "Marsyas", + "libXtract" ; + rdfs:subClassOf af:AudioFeature . + +af:PowerSpectrum a owl:Class ; + dc:description "A measure of the power of different frequency components.", + "PowerSpectrum computes the magnitude/power of the complex spectrum" ; + af:computedIn "Marsyas", + "jMIR" ; + af:name "Power Spectrum" ; + rdfs:subClassOf af:AudioFeature . + +af:PowerToAverageRatio a owl:Class ; + dc:description "PowerToAverageRatio (or Power-to-Average Ratio) of a window" ; + af:computedIn "Marsyas" ; + rdfs:subClassOf af:AudioFeature . + +af:PrincipalMelSpectrumComponents a owl:Class ; + af:author "Philippe Hamel" ; + af:computedIn "MIREX" ; + af:feature "Principal Mel-spectrum Components" ; + af:source "MIREX" ; + rdfs:subClassOf af:AudioFeature . + +af:PsychoacousticalPitch a owl:Class ; + af:appdomain "several" ; + af:complexity "high" ; + af:computation "(Non-) Linear Weighting Function", + "Autocorrelation", + "Band-pass Filter (Bank)", + "Root Mean Square" ; + af:dimensions "parameterized" ; + af:domain "frequency" ; + af:feature "PsychoacousticalPitch" ; + af:level "perceptual" ; + af:model "psychoacoustic" ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:PulseClarity a owl:Class ; + dc:description "estimates the rhythmic clarity, indicating the strength of the beats estimated by the tempo function" ; + af:computedIn "MIRToolbox" ; + af:tag "Rhythm" ; + rdfs:subClassOf af:AudioFeature . + +af:PulseMetric a owl:Class ; + af:appdomain "audio segmentation" ; + af:complexity "medium" ; + af:computation "Autocorrelation", + "Band-pass Filter (Bank)", + "Root Mean Square", + "Windowing" ; + af:dimensions "1" ; + af:domain "modulation frequency" ; + af:feature "PulseMetric" ; + af:level "perceptual" ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:PureTonalness a owl:Class ; + af:computedIn "PsySound3" ; + rdfs:subClassOf af:AudioFeature . + +af:RMSAmplitude a owl:Class ; + dc:description "Extract the RMS amplitude of an audio signal" ; + af:computedIn "Vamp" ; + af:domain "time" ; + af:feature "RMS Amplitude" ; + af:output "Dense" ; + af:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" ; + rdfs:subClassOf af:AudioFeature . + +af:RMSEnergy a owl:Class ; + dc:description "root mean square energy" ; + af:computedIn "MIRToolbox" ; + af:tag "Dynamics" ; + rdfs:subClassOf af:AudioFeature . + +af:RatescalefrequencyFeatures a owl:Class ; + af:appdomain "environmental sound recognition" ; + af:complexity "high" ; + af:computation "(Non-) Linear Weighting Function", + "Band-pass Filter Bank", + "Derivation, Difference", + "Discrete Wavelet Transform", + "Low-pass Filter", + "Principal Component Analysis", + "Root Mean Square", + "Windowing" ; + af:dimensions "256" ; + af:domain "eigendomain" ; + af:feature "RatescalefrequencyFeatures" ; + af:level "physical" ; + af:model "psychoacoustic" ; + af:temporalscale "interframe" ; + rdfs:subClassOf af:AudioFeature . + +af:RelativeDifferenceFunction a owl:Class ; + dc:description "Relative Difference Function" ; + af:computedIn "jMIR" ; + af:name "Relative Difference Function" ; + rdfs:subClassOf af:AudioFeature . + +af:RelativeSpectralPLP a owl:Class ; + af:appdomain "speech recognition" ; + af:complexity "high" ; + af:computation "(Non-) Linear Weighting Function", + "Autoregression (Linear Prediction Analysis)", + "Band-pass Filter (Bank)", + "Cepstral Recursion Formula", + "Discrete Cosine Transform", + "Discrete Fourier Transform", + "Exponential Function", + "Logarithm", + "Regression", + "Windowing" ; + af:dimensions "parameterized" ; + af:domain "cepstral" ; + af:feature "RelativeSpectralPLP" ; + af:level "physical" ; + af:model "psychoacoustic" ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:RhythmHistogram a owl:Class ; + af:author "T. Lidy" ; + af:computedIn "MIREX" ; + af:feature "Rhythm Histogram" ; + af:source "MIREX 2008" ; + rdfs:subClassOf af:AudioFeature . + +af:RhythmicFluctuation a owl:Class ; + dc:description "Rhythmic periodicity along auditory channels" ; + af:computedIn "MIRToolbox" ; + af:tag "Rhythm" ; + rdfs:subClassOf af:AudioFeature . + +af:RiseTime a owl:Class ; + dc:description "the time duration between the signal reached 2% of it maximum value to the time it reaches 80% of its maximum value" ; + af:computedIn "CLAM" ; + af:tag "Audio" ; + rdfs:subClassOf af:AudioFeature . + +af:Rmsamplitude a owl:Class ; + af:computedIn "libXtract" ; + rdfs:subClassOf af:AudioFeature . + +af:RootMeanSquare a owl:Class ; + dc:description "A measure of the power of a signal.", + "Rms energy of realvec" ; + af:computedIn "Marsyas", + "jMIR", + "sMIRk" ; + af:name "Root Mean Square" ; + rdfs:subClassOf af:AudioFeature . + +af:Roughness a owl:Class ; + dc:description "The average dissonance between all pairs of peaks in the spectrum" ; + af:computedIn "MIRToolbox" ; + af:tag "Timbre" ; + rdfs:subClassOf af:AudioFeature . + +af:RunningAutocorrelation a owl:Class ; + dc:description "Running calculation (across slices) of the autocorrelation values." ; + af:computedIn "Marsyas" ; + rdfs:subClassOf af:AudioFeature . + +af:RunningStatistics a owl:Class ; + dc:description "Gathers the running average, variance, standard deviation, etc." ; + af:computedIn "Marsyas" ; + rdfs:subClassOf af:AudioFeature . + +af:SNR a owl:Class ; + dc:description "Compute SNR and variations" ; + af:computedIn "Marsyas" ; + rdfs:subClassOf af:AudioFeature . + +af:SalienceFunction a owl:Class ; + af:computedIn "Vamp" ; + af:domain "time" ; + af:feature "Salience Function (MELODIA - Melody Extraction (intermediate steps))" ; + af:output "Dense" ; + af:source "Music Technology Group, Universitat Pompeu Fabra" ; + rdfs:subClassOf af:AudioFeature . + +af:Segmenter a owl:Class ; + dc:description "Divide the track into a sequence of consistent segments" ; + af:computedIn "Vamp" ; + af:domain "time" ; + af:feature "Segmenter" ; + af:output "Sparse" ; + af:source "Queen Mary, University of London" ; + rdfs:subClassOf af:AudioFeature . + +af:SemitoneSpectrum a owl:Class ; + af:computedIn "Vamp" ; + af:domain "frequency" ; + af:feature "Semitone Spectrum (NNLS Chroma)" ; + af:output "Dense" ; + af:source "Matthias Mauch" ; + rdfs:subClassOf af:AudioFeature . + +af:Sharpness a owl:Class ; + af:appdomain "several" ; + af:complexity "medium" ; + af:computation "(Non-) Linear Weighting Function", + "Discrete Fourier Transform", + "Mean", + "Regression", + "Windowing" ; + af:computedIn "PsySound3", + "libXtract" ; + af:dimensions "1" ; + af:domain "frequency" ; + af:feature "Sharpness" ; + af:level "perceptual" ; + af:model "psychoacoustic" ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:ShortTimeEnergy a owl:Class ; + af:appdomain "several" ; + af:complexity "low" ; + af:computation "Deviation, Sum of Differences", + "Windowing" ; + af:dimensions "1" ; + af:domain "temporal" ; + af:feature "ShortTimeEnergy" ; + af:level "physical" ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:SilenceTest a owl:Class ; + af:computedIn "Vamp" ; + af:domain "time" ; + af:feature "Silence Test (Aubio Silence Detector)" ; + af:output "Sparse" ; + af:source "Paul Brossier (plugin by Chris Cannam)" ; + rdfs:subClassOf af:AudioFeature . + +af:Similarity a owl:Class ; + dc:description "Return a distance matrix for similarity between the input audio channels" ; + af:computedIn "Vamp" ; + af:domain "time" ; + af:feature "Similarity" ; + af:source "Queen Mary, University of London" ; + rdfs:subClassOf af:AudioFeature . + +af:SlopeIntegrator a owl:Class ; + dc:description "Feature transform that compute the slope of input feature over the given number of frames." ; + af:computedIn "Yaafe" ; + rdfs:subClassOf af:AudioFeature . + +af:SmoothedDetectionFunction a owl:Class ; + af:computedIn "Vamp" ; + af:domain "frequency" ; + af:feature "Smoothed Detection Function (Note Onset Detector)" ; + af:output "Sparse" ; + af:source "Queen Mary, University of London" ; + rdfs:subClassOf af:AudioFeature . + +af:Smoothness a owl:Class ; + af:computedIn "libXtract" ; + rdfs:subClassOf af:AudioFeature . + +af:Sone a owl:Class ; + af:appdomain "music information retrieval" ; + af:complexity "high" ; + af:computation "(Non-) Linear Weighting Function", + "Discrete Fourier Transform", + "Logarithm", + "Low-pass Filter", + "Regression", + "Windowing" ; + af:dimensions "parameterized" ; + af:domain "frequency" ; + af:feature "Sone" ; + af:level "perceptual" ; + af:model "psychoacoustic" ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:SpectralCenter a owl:Class ; + af:appdomain "music information retrieval" ; + af:complexity "low" ; + af:computation "Discrete Fourier Transform", + "Energy Spectral Density", + "Harmonic Peak Detection", + "Windowing" ; + af:dimensions "1" ; + af:domain "frequency" ; + af:feature "SpectralCenter" ; + af:level "perceptual" ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:SpectralCentroid a owl:Class ; + dc:description "Centroid of each time slice of observations", + "Extract the spectral centroid of an audio spectrum", + "Marsyas - Batch Feature Extract - Centroid", + "The centre of mass of the power spectrum.", + "The spectral centroid represents the barycenter of the spectrum.", + "the frequency where the center of mass of the spectral power distribution lies", + "the weighted mean frequency, or the \"centre of mass\" of the spectrum" ; + af:appdomain "several" ; + af:complexity "low" ; + af:computation "Discrete Fourier Transform", + "Logarithm", + "Mean", + "Regression", + "Windowing" ; + af:computedIn "CLAM", + "Marsyas", + "SuperCollider", + "Vamp", + "aubio", + "jMIR", + "libXtract", + "sMIRk" ; + af:dimensions "1" ; + af:domain "frequency", + "time" ; + af:feature "Marsyas - Batch Feature Extract - Centroid", + "Spectral Centroid", + "SpectralCentroid" ; + af:level "perceptual" ; + af:name "Spectral Centroid" ; + af:output "Dense" ; + af:source "Marsyas Plugins", + "libxtract by Jamie Bullock (plugin by Chris Cannam)" ; + af:tag "Spectral" ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:SpectralContrastPattern a owl:Class ; + af:author "Klaus Seyerlehner" ; + af:computedIn "MIREX" ; + af:feature "Spectral Contrast Pattern" ; + af:source "MIREX 2012" ; + rdfs:subClassOf af:AudioFeature . + +af:SpectralCrest a owl:Class ; + dc:description "Extract the spectral crest measure of an audio spectrum", + "produces the spectral crest measure, which is an indicator of the \"peakiness\" of the spectral energy distribution" ; + af:appdomain "fingerprinting" ; + af:complexity "low" ; + af:computation "Discrete Fourier Transform", + "Logarithm", + "Mean", + "Regression", + "Sum, Weighted Sum", + "Windowing" ; + af:computedIn "SuperCollider", + "Vamp" ; + af:dimensions "parameterized" ; + af:domain "frequency" ; + af:feature "Spectral Crest Measure", + "SpectralCrest" ; + af:level "perceptual" ; + af:output "Dense" ; + af:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:SpectralCrestFactor a owl:Class ; + dc:description "Marsyas - Batch Feature Extract - Spectral Crest Factor" ; + af:computedIn "Vamp" ; + af:domain "time" ; + af:feature "Marsyas - Batch Feature Extract - Spectral Crest Factor" ; + af:output "Dense" ; + af:source "Marsyas Plugins" ; + rdfs:subClassOf af:AudioFeature . + +af:SpectralCrestFactorPerBand a owl:Class ; + dc:description "Compute spectral crest factor per log-spaced band of 1/4 octave." ; + af:computedIn "Yaafe" ; + rdfs:subClassOf af:AudioFeature . + +af:SpectralDecrease a owl:Class ; + dc:description "Compute spectral decrease accoding to [GP2004]_.", + "The spectral decrease is another representation of the decreasing rate, based on perceptual criteria." ; + af:computedIn "Yaafe", + "aubio" ; + rdfs:subClassOf af:AudioFeature . + +af:SpectralDifferenceMethodOnsetDetectionFunction a owl:Class ; + dc:description "Spectral difference method onset detection function." ; + af:computedIn "aubio" ; + rdfs:subClassOf af:AudioFeature . + +af:SpectralDispersion a owl:Class ; + af:appdomain "music information retrieval" ; + af:complexity "low" ; + af:computation "Discrete Fourier Transform", + "Energy Spectral Density", + "Harmonic Peak Detection", + "Median", + "Windowing" ; + af:dimensions "1" ; + af:domain "frequency" ; + af:feature "SpectralDispersion" ; + af:level "perceptual" ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:SpectralDissonance a owl:Class ; + af:computedIn "PsySound3" ; + rdfs:subClassOf af:AudioFeature . + +af:SpectralFlux a owl:Class ; + dc:description "A measure of the amount of spectral change in a signal. //\\n Found by calculating the change in the magnitude spectrum //\\n from frame to frame.", + "Compute flux of :class:spectrum MagnitudeSpectrum between consecutives frames.", + "Flux calculate the flux between the current and prev. spectrum (e.g. output of PowerSpectrum)", + "Spectral Flux" ; + af:abbreviation "SF" ; + af:appdomain "several" ; + af:complexity "low" ; + af:computation "Derivation, Difference", + "Discrete Fourier Transform", + "Root Mean Square", + "Windowing" ; + af:computedIn "Marsyas", + "Yaafe", + "aubio", + "jMIR", + "libXtract", + "sMIRk" ; + af:dimensions "1" ; + af:domain "frequency" ; + af:feature "SpectralFlux" ; + af:level "physical" ; + af:name "Spectral Flux" ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:SpectralFluxOnsetDetectionFunction a owl:Class ; + dc:description "Use peaks of spectral flux to detect onsets" ; + af:computedIn "MIRToolbox" ; + af:tag "Rhythm" ; + rdfs:subClassOf af:AudioFeature . + +af:SpectralKurtosis a owl:Class ; + dc:description "Extract the kurtosis of a range of values", + "Extract the kurtosis of an audio spectrum", + "Kurtosis", + "The kurtosis is a measure of the flatness of the spectrum, computed from the fourth order moment." ; + af:computedIn "Marsyas", + "Vamp", + "aubio", + "libXtract" ; + af:domain "frequency" ; + af:feature "Kurtosis", + "Spectral Kurtosis" ; + af:output "Dense" ; + af:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" ; + rdfs:subClassOf af:AudioFeature . + +af:SpectralPeakStructure a owl:Class ; + af:appdomain "music information retrieval" ; + af:complexity "medium" ; + af:computation "Derivation, Difference", + "Discrete Fourier Transform", + "Entropy", + "Spectral binning", + "Windowing", + "Zero-/Level Crossing Detector" ; + af:dimensions "1" ; + af:domain "frequency" ; + af:feature "SpectralPeakStructure" ; + af:level "perceptual" ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:SpectralPercentile a owl:Class ; + dc:description "calculates the cumulative distribution of the frequency spectrum, and outputs the frequency value which corresponds to the desired percentile" ; + af:computedIn "SuperCollider" ; + rdfs:subClassOf af:AudioFeature . + +af:SpectralRolloff a owl:Class ; + dc:description "Extract the rolloff point of an audio spectrum", + "Marsyas - Batch Feature Extract - Spectral Rolloff", + "Rolloff of each time slice of observations", + "Spectral roll-off is the frequency so that 99% of the energy is contained below. see [SS1997]_.", + "The fraction of bins in the power spectrum at which 85% // System.getProperty(line.separator) of the power is at lower frequencies. This is a measure // System.getProperty(line.separator) // of the right-skewedness of the power spectrum.", + "The frequency below which 85% of the energy is contained. The percentage may be user-chosen", + "The spectral roll-off point is the frequency value so that the 85% of the spectral energy is contained below it", + "This function returns the bin number below which 95% of the spectrum energy is found." ; + af:appdomain "several" ; + af:complexity "low" ; + af:computation "Discrete Fourier Transform", + "Polynomial Root Finding", + "Windowing" ; + af:computedIn "CLAM", + "MIRToolbox", + "Marsyas", + "Vamp", + "Yaafe", + "aubio", + "jMIR", + "libXtract", + "sMIRk" ; + af:dimensions "1" ; + af:domain "frequency", + "time" ; + af:feature "Marsyas - Batch Feature Extract - Spectral Rolloff", + "Spectral Rolloff", + "SpectralRolloff" ; + af:level "perceptual" ; + af:name "Spectral Rolloff Point" ; + af:output "Dense" ; + af:source "Marsyas Plugins", + "libxtract by Jamie Bullock (plugin by Chris Cannam)" ; + af:tag "Spectral", + "Timbre" ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:SpectralShapeDescriptors a owl:Class ; + dc:description "Spectral shape descriptors" ; + af:computedIn "aubio" ; + rdfs:subClassOf af:AudioFeature . + +af:SpectralSlope a owl:Class ; + dc:description "Extract the spectral slope of an audio spectrum", + "SpectralSlope is computed by linear regression of the spectral amplitude. (see [GP2004]_)", + "The spectral slope represents decreasing rate of the spectral amplitude, computed using a linear regression.", + "measures the spectral slope, which is the slope of the linear correlation line derived from the spectral magnitudes", + "the amount of decreasing of the spectral magnitude" ; + af:appdomain "several" ; + af:complexity "low" ; + af:computation "Discrete Fourier Transform", + "Peak Detection", + "Windowing" ; + af:computedIn "CLAM", + "SuperCollider", + "Vamp", + "Yaafe", + "aubio", + "libXtract" ; + af:dimensions "4" ; + af:domain "frequency" ; + af:feature "Spectral Slope", + "SpectralSlope" ; + af:level "physical" ; + af:output "Dense" ; + af:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" ; + af:tag "Spectral" ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:SpectralSmoothness a owl:Class ; + dc:description "Extract the spectral smoothness of an audio spectrum" ; + af:computedIn "Vamp" ; + af:domain "frequency" ; + af:feature "Spectral Smoothness" ; + af:output "Dense" ; + af:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" ; + rdfs:subClassOf af:AudioFeature . + +af:SpectralSpread a owl:Class ; + dc:description "Extract the spectral spread of an audio spectrum", + "The spectral spread is the variance of the spectral distribution around its centroid.", + "measures the spectral spread, which is the magnitude-weighted variance", + "the variation of the spectrum around its mean value." ; + af:computedIn "CLAM", + "SuperCollider", + "Vamp", + "aubio", + "libXtract" ; + af:domain "frequency" ; + af:feature "Spectral Spread" ; + af:output "Dense" ; + af:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" ; + af:tag "Spectral" ; + rdfs:subClassOf af:AudioFeature . + +af:SpectralVariability a owl:Class ; + dc:description "The standard deviation of the magnitude spectrum. This is a measure of the variance of a signal's magnitude spectrum." ; + af:computedIn "jMIR" ; + af:name "Spectral Variability" ; + rdfs:subClassOf af:AudioFeature . + +af:Spectralinharmonicity a owl:Class ; + af:computedIn "libXtract" ; + rdfs:subClassOf af:AudioFeature . + +af:Spectrum a owl:Class ; + dc:description "Compute the complex spectrum of input window", + "Extract the spectrum of an audio signal" ; + af:computedIn "Marsyas", + "Vamp", + "libXtract" ; + af:domain "time" ; + af:feature "Spectrum" ; + af:output "Dense" ; + af:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" ; + rdfs:subClassOf af:AudioFeature . + +af:Spectrum2Chroma a owl:Class ; + dc:description "Convert spectrum magnitude (e.g. output from PowerSpectrum MarSystem)into a Chroma vector representation." ; + af:computedIn "Marsyas" ; + rdfs:subClassOf af:AudioFeature . + +af:Spectrum2Mel a owl:Class ; + dc:description "Convert spectrum magnitude (e.g. output from PowerSpectrum MarSystem)into Mel frequency scale." ; + af:computedIn "Marsyas" ; + rdfs:subClassOf af:AudioFeature . + +af:StatisticalIntegrator a owl:Class ; + dc:description "Feature transform that compute the temporal mean and variance of input feature over the given number of frames." ; + af:computedIn "Yaafe" ; + rdfs:subClassOf af:AudioFeature . + +af:StereoSpectrum a owl:Class ; + dc:description "StereoSpectrum computes the panning index for each spectrumbin of a stereo input (i.e. input is expected to be the output of a" ; + af:computedIn "Marsyas" ; + rdfs:subClassOf af:AudioFeature . + +af:StrengthOfStrongestBeat a owl:Class ; + dc:description "How strong the strongest beat in the beat histogram is compared to other potential beats." ; + af:computedIn "jMIR" ; + af:name "Strength Of Strongest Beat" ; + rdfs:subClassOf af:AudioFeature . + +af:StrongestBeat a owl:Class ; + dc:description "The strongest beat in a signal, in beats per minute, found by finding the strongest bin in the beat histogram." ; + af:computedIn "jMIR" ; + af:name "Strongest Beat" ; + rdfs:subClassOf af:AudioFeature . + +af:StrongestFrequencyViaFFTMax a owl:Class ; + dc:description "The strongest frequency component of a signal, in Hz, found via finding the FFT bin with the highest power." ; + af:computedIn "jMIR" ; + af:name "Strongest Frequency Via FFT Maximum" ; + rdfs:subClassOf af:AudioFeature . + +af:StrongestFrequencyViaSpectralCentroid a owl:Class ; + dc:description "The strongest frequency component of a signal, in Hz, found via the spectral centroid." ; + af:computedIn "jMIR" ; + af:name "Strongest Frequency Via Spectral Centroid" ; + rdfs:subClassOf af:AudioFeature . + +af:StrongestFrequencyViaZeroCrossings a owl:Class ; + dc:description "The strongest frequency component of a signal, in Hz, found via the number of zero-crossings." ; + af:computedIn "jMIR" ; + af:name "Strongest Frequency Via Zero Crossings" ; + rdfs:subClassOf af:AudioFeature . + +af:SubbandEnergyRatio a owl:Class ; + af:appdomain "several" ; + af:complexity "low" ; + af:computation "Discrete Fourier Transform", + "Energy Spectral Density", + "Normalization", + "Regression", + "Windowing" ; + af:dimensions "parameterized" ; + af:domain "frequency" ; + af:feature "SubbandEnergyRatio" ; + af:level "physical" ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:SubbandSpectralFlux a owl:Class ; + af:appdomain "environmental sound recognition" ; + af:complexity "medium" ; + af:computation "Derivation, Difference", + "Discrete Fourier Transform", + "Logarithm", + "Mean", + "Normalization", + "Regression", + "Windowing" ; + af:dimensions "8" ; + af:domain "frequency" ; + af:feature "SubbandSpectralFlux" ; + af:level "perceptual" ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:Subbands a owl:Class ; + af:computedIn "libXtract" ; + rdfs:subClassOf af:AudioFeature . + +af:Sum a owl:Class ; + af:computedIn "libXtract" ; + rdfs:subClassOf af:AudioFeature . + +af:SumofValues a owl:Class ; + dc:description "Extract the sum of the values in a given range" ; + af:computedIn "Vamp" ; + af:domain "frequency" ; + af:feature "Sum of Values" ; + af:output "Dense" ; + af:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" ; + rdfs:subClassOf af:AudioFeature . + +af:Tempo a owl:Class ; + dc:description "Tempo detection driver. This object stores all the memory required for tempo detection algorithm and returns the estimated beat locations.", + "derived from calculated onsets with ACF, spectrum or both" ; + af:computedIn "MIRToolbox", + "Vamp", + "aubio" ; + af:domain "frequency", + "time" ; + af:feature "Tempo (Aubio Beat Tracker)", + "Tempo (Tempo and Beat Tracker)" ; + af:output "Dense", + "Sparse" ; + af:source "Paul Brossier (method by Matthew Davies, plugin by Chris Cannam)", + "Queen Mary, University of London" ; + af:tag "Rhythm" ; + rdfs:subClassOf af:AudioFeature . + +af:TempoandBeatTracker a owl:Class ; + dc:description "Estimate beat locations and tempo" ; + af:computedIn "Vamp" ; + af:domain "frequency" ; + af:feature "Tempo and Beat Tracker" ; + af:source "Queen Mary, University of London" ; + rdfs:subClassOf af:AudioFeature . + +af:TemporalCentroid a owl:Class ; + dc:description "time where signal energy is \"concentrated\"" ; + af:computedIn "CLAM" ; + af:tag "Audio" ; + rdfs:subClassOf af:AudioFeature . + +af:TemporalRhythmHistogram a owl:Class ; + af:author "T. Lidy" ; + af:computedIn "MIREX" ; + af:feature "Temporal Rhythm Histogram" ; + af:source "MIREX 2008" ; + rdfs:subClassOf af:AudioFeature . + +af:TimbralWidth a owl:Class ; + af:computedIn "PsySound3" ; + rdfs:subClassOf af:AudioFeature . + +af:TimbreDistribution a owl:Class ; + af:computedIn "comirva" ; + rdfs:subClassOf af:AudioFeature . + +af:TonalCentroid a owl:Class ; + dc:description "Calculates the 6-dimensional tonal centroid vector from the chromagram" ; + af:computedIn "MIRToolbox" ; + af:tag "Tonality" ; + rdfs:subClassOf af:AudioFeature . + +af:TonalChange a owl:Class ; + dc:description "Detect and return the positions of harmonic changes such as chord boundaries" ; + af:computedIn "Vamp" ; + af:domain "time" ; + af:feature "Tonal Change" ; + af:source "Queen Mary, University of London" ; + rdfs:subClassOf af:AudioFeature . + +af:TonalChangePositions a owl:Class ; + af:computedIn "Vamp" ; + af:domain "time" ; + af:feature "Tonal Change Positions (Tonal Change)" ; + af:output "Sparse" ; + af:source "Queen Mary, University of London" ; + rdfs:subClassOf af:AudioFeature . + +af:TonalDissonance a owl:Class ; + af:computedIn "PsySound3" ; + rdfs:subClassOf af:AudioFeature . + +af:Tonality a owl:Class ; + dc:description "Extract the tonality an audio spectrum" ; + af:computedIn "Vamp", + "libXtract" ; + af:domain "frequency" ; + af:feature "Tonality" ; + af:output "Dense" ; + af:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" ; + rdfs:subClassOf af:AudioFeature . + +af:TonicPitch a owl:Class ; + af:computedIn "Vamp" ; + af:domain "time" ; + af:feature "Tonic Pitch (Key Detector)" ; + af:output "Sparse" ; + af:source "Queen Mary, University of London" ; + rdfs:subClassOf af:AudioFeature . + +af:Transformto6DTonalContentSpace a owl:Class ; + af:computedIn "Vamp" ; + af:domain "time" ; + af:feature "Transform to 6D Tonal Content Space (Tonal Change)" ; + af:output "Dense" ; + af:source "Queen Mary, University of London" ; + rdfs:subClassOf af:AudioFeature . + +af:TransientSteadyStateSeparation a owl:Class ; + dc:description "Transient / Steady-state Separation (TSS)" ; + af:computedIn "aubio" ; + rdfs:subClassOf af:AudioFeature . + +af:TriangularFilterBank a owl:Class ; + dc:description "Triangular FilterBankTakes as input the N/2+1 spectrum Magnitude points output by PowerSpectrum." ; + af:computedIn "Marsyas" ; + rdfs:subClassOf af:AudioFeature . + +af:Tuning a owl:Class ; + dc:description "The tuning plugin can estimate the local and global tuning of piece. The same tuning method is used for the NNLS Chroma and Chordino plugins." ; + af:computedIn "Vamp" ; + af:domain "frequency" ; + af:feature "Tuning" ; + af:source "Matthias Mauch" ; + rdfs:subClassOf af:AudioFeature . + +af:Variance a owl:Class ; + dc:description "Extract the variance of a range of values", + "the variance of audio samples amplitude" ; + af:computedIn "CLAM", + "Vamp", + "libXtract" ; + af:domain "frequency" ; + af:feature "Variance" ; + af:output "Dense" ; + af:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" ; + af:tag "Audio" ; + rdfs:subClassOf af:AudioFeature . + +af:VarianceDeltaSpectralPattern a owl:Class ; + af:author "Klaus Seyerlehner" ; + af:computedIn "MIREX" ; + af:feature "Variance Delta Spectral Pattern" ; + af:source "MIREX 2012" ; + rdfs:subClassOf af:AudioFeature . + +af:Volume a owl:Class ; + af:appdomain "several" ; + af:complexity "low" ; + af:computation "Power", + "Windowing" ; + af:dimensions "1" ; + af:domain "temporal" ; + af:feature "Volume" ; + af:level "physical" ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:WaveletPyramid a owl:Class ; + dc:description "Pyramid wavelet algorithm" ; + af:computedIn "Marsyas" ; + rdfs:subClassOf af:AudioFeature . + +af:Yin a owl:Class ; + dc:description "Pitch detection using the YIN algorithm" ; + af:computedIn "Marsyas" ; + rdfs:subClassOf af:AudioFeature . + +af:ZeroCrossingPeakAmplitudes a owl:Class ; + af:appdomain "speech recognition" ; + af:complexity "medium" ; + af:computation "Band-pass Filter (Bank)", + "Logarithm", + "Root Mean Square", + "Spectral binning", + "Windowing" ; + af:dimensions "parameterized" ; + af:domain "temporal" ; + af:feature "ZeroCrossingPeakAmplitudes" ; + af:level "physical" ; + af:model "psychoacoustic" ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:ZeroCrossingRate a owl:Class ; + dc:description "Compute zero-crossing rate in frames. see [SS1997]_.", + "Detect and count zero crossing points", + "Extract the zero crossing rate of an audio signal", + "Marsyas - Batch Feature Extract - Zero Crossings", + "Outputs a frequency based upon the distance between interceptions of the X axis. The X intercepts are determined via linear interpolation so this gives better than just integer wavelength resolution. This is a very crude pitch follower, but can be useful in some situations.", + "The number of times the waveform changed sign. An indication of frequency as well as noisiness.", + "Time-domain ZeroCrossings", + "a measure of the number of time the signal value cross the zero axe, averaged over the whole signal" ; + af:abbreviation "ZCR" ; + af:appdomain "several" ; + af:complexity "low" ; + af:computation "Spectral binning", + "Windowing" ; + af:computedIn "CLAM", + "MIRToolbox", + "Marsyas", + "SuperCollider", + "Vamp", + "Yaafe", + "jMIR", + "libXtract", + "sMIRk" ; + af:dimensions "1" ; + af:domain "temporal", + "time" ; + af:feature "Marsyas - Batch Feature Extract - Zero Crossings", + "Zero Crossing Rate", + "Zero Crossings", + "ZeroCrossingRate" ; + af:level "physical" ; + af:name "Zero Crossings" ; + af:output "Dense" ; + af:source "Marsyas Plugins", + "libxtract by Jamie Bullock (plugin by Chris Cannam)" ; + af:tag "Audio", + "Timbre" ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:evenHarmonicRatio a owl:Class ; + dc:description "Extract the odd-to-even harmonic ratio of an audio spectrum" ; + af:computedIn "Vamp" ; + af:domain "frequency" ; + af:feature "Odd/even Harmonic Ratio" ; + af:output "Dense" ; + af:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" ; + rdfs:subClassOf af:AudioFeature . + +af:ADRessStereoSpectrum a owl:Class ; + dc:description "Takes the output of the ADRess (i.e. the panning-frequency maps)and outputs the panning coefficient for each spectral bin (N/2+1 bins)." ; + af:computedIn "Marsyas" ; + af:similarTo af:EnhADRessStereoSpectrum ; + rdfs:subClassOf af:AudioFeature . + +af:AimHCL a owl:Class ; + dc:description "Halfwave rectification, compression and lowpass filtering" ; + af:computedIn "Marsyas" ; + af:similarTo af:AimHCL2 ; + rdfs:subClassOf af:AudioFeature . + +af:AimHCL2 a owl:Class ; + dc:description "Halfwave rectification, compression and lowpass filtering" ; + af:computedIn "Marsyas" ; + af:similarTo af:AimHCL ; + rdfs:subClassOf af:AudioFeature . + +af:AimPZFC a owl:Class ; + dc:description "Time-domain AimPZFC" ; + af:computedIn "Marsyas" ; + af:similarTo af:AimPZFC2 ; + rdfs:subClassOf af:AudioFeature . + +af:AimPZFC2 a owl:Class ; + dc:description "Time-domain AimPZFC2" ; + af:computedIn "Marsyas" ; + af:similarTo af:AimPZFC ; + rdfs:subClassOf af:AudioFeature . + +af:AimSAI a owl:Class ; + dc:description "Stabilised auditory image" ; + af:computedIn "Marsyas" ; + af:similarTo af:AimSSI ; + rdfs:subClassOf af:AudioFeature . + +af:AimSSI a owl:Class ; + dc:description "Size-shape image (aka the 'sscAI')" ; + af:computedIn "Marsyas" ; + af:similarTo af:AimSAI ; + rdfs:subClassOf af:AudioFeature . + +af:AreaPolynomialApproximationConstantQMFCC a owl:Class ; + dc:description "coeffecients of 2D polynomial best describing the input matrtix." ; + af:computedIn "jMIR" ; + af:name "2D Polynomial Approximation ConstantQ MFCC" ; + af:similarTo af:AreaPolynomialApproximationLogConstantQ ; + rdfs:subClassOf af:AudioFeature . + +af:AreaPolynomialApproximationLogConstantQ a owl:Class ; + dc:description "coeffecients of 2D polynomial best describing the input matrix." ; + af:computedIn "jMIR" ; + af:name "2D Polynomial Approximation of Log of ConstantQ" ; + af:similarTo af:AreaPolynomialApproximationConstantQMFCC ; + rdfs:subClassOf af:AudioFeature . + +af:AutoCorrelation a owl:Class ; + dc:description "Compute autocorrelation coefficients *ac* on each frames.", + "Compute the generalized autocorrelation of input window", + "Extract the autocorrelation of an audio signal" ; + af:computedIn "Marsyas", + "Vamp", + "Yaafe", + "libXtract", + "sMIRk" ; + af:domain "time" ; + af:feature "Autocorrelation" ; + af:output "Dense" ; + af:similarTo af:Autocorrelationfft ; + af:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" ; + rdfs:subClassOf af:AudioFeature . + +af:Autocorrelationfft a owl:Class ; + af:computedIn "libXtract" ; + af:similarTo af:AutoCorrelation ; + rdfs:subClassOf af:AudioFeature . + +af:AverageDeviation a owl:Class ; + dc:description "Extract the average deviation of a range of values" ; + af:computedIn "Vamp" ; + af:domain "frequency" ; + af:feature "Average Deviation" ; + af:output "Dense" ; + af:similarTo af:Averagedeviation ; + af:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" ; + rdfs:subClassOf af:AudioFeature . + +af:AverageMagnitudeDifferenceFunction a owl:Class ; + dc:description "Average Magnitude Difference Function", + "Extract the AMDF of an audio signal" ; + af:computedIn "Marsyas", + "Vamp", + "libXtract" ; + af:domain "time" ; + af:feature "Average Magnitude Difference Function" ; + af:output "Dense" ; + af:similarTo af:AverageSquaredDifferenceFunction ; + af:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" ; + rdfs:subClassOf af:AudioFeature . + +af:AverageSquaredDifferenceFunction a owl:Class ; + dc:description "Extract the ASDF of an audio signal" ; + af:computedIn "Vamp" ; + af:domain "time" ; + af:feature "Average Squared Difference Function" ; + af:output "Dense" ; + af:similarTo af:AverageMagnitudeDifferenceFunction ; + af:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" ; + rdfs:subClassOf af:AudioFeature . + +af:Averagedeviation a owl:Class ; + af:computedIn "libXtract" ; + af:similarTo af:AverageDeviation ; + rdfs:subClassOf af:AudioFeature . + +af:BarkCoefficients a owl:Class ; + dc:description "Extract bark coefficients from an audio spectrum" ; + af:computedIn "Vamp" ; + af:domain "frequency" ; + af:feature "Bark Coefficients" ; + af:output "Dense" ; + af:similarTo af:Barkcoefficients ; + af:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" ; + rdfs:subClassOf af:AudioFeature . + +af:Barkcoefficients a owl:Class ; + af:computedIn "libXtract" ; + af:similarTo af:BarkCoefficients ; + rdfs:subClassOf af:AudioFeature . + +af:BarkscaleFrequencyCepstralCoefficients a owl:Class ; + af:appdomain "several" ; + af:complexity "high" ; + af:computation "Discrete Cosine Transform", + "Discrete Fourier Transform", + "Logarithm", + "Regression", + "Windowing" ; + af:dimensions "parameterized" ; + af:domain "cepstral" ; + af:feature "BarkscaleFrequencyCepstralCoefficients" ; + af:level "physical" ; + af:model "psychoacoustic" ; + af:similarTo af:MelscaleFrequencyCepstralCoefficients ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:BeatSpectra a owl:Class ; + af:computedIn "Vamp" ; + af:domain "time" ; + af:feature "Beat Spectra (Similarity)" ; + af:output "Sparse" ; + af:similarTo af:BeatSpectrum ; + af:source "Queen Mary, University of London" ; + rdfs:subClassOf af:AudioFeature . + +af:EnhADRessStereoSpectrum a owl:Class ; + dc:description "Takes the output of the enhADRessand outputs the panning coefficient for each spectral bin (N/2+1 bins)." ; + af:computedIn "Marsyas" ; + af:similarTo af:ADRessStereoSpectrum ; + rdfs:subClassOf af:AudioFeature . + +af:HarmonicChangeDetectionFunction a owl:Class ; + dc:description "the flux of the tonal centroid" ; + af:computedIn "MIRToolbox" ; + af:similarTo af:TonalChangeDetectionFunction ; + af:tag "Tonality" ; + rdfs:subClassOf af:AudioFeature . + +af:HarmonicSpectralCentroid a owl:Class ; + dc:description "Spectral Centroid calculated based on the center of mass of partials instead of center of mass of bins." ; + af:computedIn "jMIR" ; + af:name "Partial Based Spectral Centroid" ; + af:similarTo af:MPEG7HarmonicSpectralCentroid ; + rdfs:subClassOf af:AudioFeature . + +af:HighestValue a owl:Class ; + dc:description "Extract the highest value from a given range" ; + af:computedIn "Vamp" ; + af:domain "frequency" ; + af:feature "Highest Value" ; + af:output "Dense" ; + af:similarTo af:Highestvalue ; + af:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" ; + rdfs:subClassOf af:AudioFeature . + +af:Highestvalue a owl:Class ; + af:computedIn "libXtract" ; + af:similarTo af:HighestValue ; + rdfs:subClassOf af:AudioFeature . + +af:KullbackLieblerOnsetDetectionFunction a owl:Class ; + dc:description "Kullback-Liebler onset detection function." ; + af:computedIn "aubio" ; + af:similarTo af:ModifiedKullbackLieblerOnsetDetectionFunction ; + rdfs:subClassOf af:AudioFeature . + +af:LineSpectralPairs a owl:Class ; + dc:description "Marsyas - Batch Feature Extract - Line Spectral Pairs" ; + af:computedIn "Vamp" ; + af:domain "time" ; + af:feature "Marsyas - Batch Feature Extract - Line Spectral Pairs" ; + af:output "Dense" ; + af:similarTo af:LinearSpectralPairs ; + af:source "Marsyas Plugins" ; + rdfs:subClassOf af:AudioFeature . + +af:LinearSpectralPairs a owl:Class ; + dc:description "Compute Linear Spectral Pair (LSP) coefficientsTakes the output of ::LPC() and calculates the corresponding LSP values." ; + af:computedIn "Marsyas" ; + af:similarTo af:LineSpectralPairs ; + rdfs:subClassOf af:AudioFeature . + +af:LogFrequencySpectrum a owl:Class ; + af:computedIn "Vamp" ; + af:domain "frequency" ; + af:feature "Log-Frequency Spectrum (NNLS Chroma)" ; + af:output "Dense" ; + af:similarTo af:TunedLogFrequencySpectrum ; + af:source "Matthias Mauch" ; + rdfs:subClassOf af:AudioFeature . + +af:LowestValue a owl:Class ; + dc:description "Extract the lowest value from a given range" ; + af:computedIn "Vamp" ; + af:domain "frequency" ; + af:feature "Lowest Value" ; + af:output "Dense" ; + af:similarTo af:Lowestvalue ; + af:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" ; + rdfs:subClassOf af:AudioFeature . + +af:Lowestvalue a owl:Class ; + af:computedIn "libXtract" ; + af:similarTo af:LowestValue ; + rdfs:subClassOf af:AudioFeature . + +af:MPEG7AudioSpectrumCentroid a owl:Class ; + af:appdomain "several" ; + af:complexity "medium" ; + af:computation "Discrete Fourier Transform", + "Logarithm", + "Mean", + "Regression", + "Windowing" ; + af:computedIn "MPEG-7" ; + af:dimensions "1" ; + af:domain "frequency" ; + af:feature "MPEG7AudioSpectrumCentroid" ; + af:level "perceptual" ; + af:model "psychoacoustic" ; + af:similarTo af:MPEG7AudioSpectrumSpread ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:MPEG7AudioSpectrumSpread a owl:Class ; + af:appdomain "several" ; + af:complexity "medium" ; + af:computation "Discrete Fourier Transform", + "Logarithm", + "Median", + "Regression", + "Windowing" ; + af:computedIn "MPEG-7" ; + af:dimensions "1" ; + af:domain "frequency" ; + af:feature "MPEG7AudioSpectrumSpread" ; + af:level "perceptual" ; + af:model "psychoacoustic" ; + af:similarTo af:MPEG7AudioSpectrumCentroid ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:MPEG7SpectralCentroid a owl:Class ; + af:appdomain "music information retrieval" ; + af:complexity "low" ; + af:computation "Discrete Fourier Transform", + "Mean" ; + af:computedIn "MPEG-7" ; + af:dimensions "1" ; + af:domain "frequency" ; + af:feature "MPEG7SpectralCentroid" ; + af:level "perceptual" ; + af:similarTo af:MPEG7TemporalCentroid ; + af:temporalscale "global" ; + rdfs:subClassOf af:AudioFeature . + +af:MPEG7TemporalCentroid a owl:Class ; + af:appdomain "music information retrieval" ; + af:complexity "low" ; + af:computation "Mean", + "Power", + "Windowing" ; + af:computedIn "MPEG-7" ; + af:dimensions "1" ; + af:domain "temporal" ; + af:feature "MPEG7TemporalCentroid" ; + af:level "physical" ; + af:similarTo af:MPEG7SpectralCentroid ; + af:temporalscale "interframe" ; + rdfs:subClassOf af:AudioFeature . + +af:MelscaleFrequencyCepstralCoefficients a owl:Class ; + dc:description "Calculate a series of MFCC vectors from the audio", + "Compute the Mel-frequencies cepstrum coefficients [DM1980]_.", + "Extract MFCC from an audio spectrum", + "Generates a set of MFCCs; these are obtained from a band-based frequency representation (using the Mel scale by default), and then a discrete cosine transform (DCT). The DCT is an efficient approximation for principal components analysis, so that it allows a compression, or reduction of dimensionality, of the data, in this case reducing 42 band readings to a smaller set of MFCCs. A small number of features (the coefficients) end up describing the spectrum. The MFCCs are commonly used as timbral descriptors.", + "MFCC Mel-Frequency Cepstral Coefficients.Takes as input the N/2+1 spectrum Magnitude points output by PowerSpectrum.", + "MFCC calculations based upon Orange Cow code", + "Marsyas - Batch Feature Extract - Mel-Frequency Cepstral Coefficients", + "Mel-frequency cepstrum coefficients object" ; + af:abbreviation "MFCC" ; + af:appdomain "several" ; + af:complexity "high" ; + af:computation "Discrete Cosine Transform", + "Discrete Fourier Transform", + "Logarithm", + "Regression", + "Windowing" ; + af:computedIn "CLAM", + "MIRToolbox", + "Marsyas", + "SuperCollider", + "Vamp", + "Yaafe", + "aubio", + "comirva", + "jMIR", + "libXtract" ; + af:dimensions "parameterized" ; + af:domain "cepstral", + "frequency", + "time" ; + af:feature "Coefficients (Mel-Frequency Cepstral Coefficients)", + "Marsyas - Batch Feature Extract - Mel-Frequency Cepstral Coefficients", + "Mel-Frequency Cepstral Coefficients", + "MelscaleFrequencyCepstralCoefficients" ; + af:level "physical" ; + af:model "psychoacoustic" ; + af:name "MFCC" ; + af:output "Dense" ; + af:similarTo af:BarkscaleFrequencyCepstralCoefficients ; + af:source "Marsyas Plugins", + "Queen Mary, University of London", + "libxtract by Jamie Bullock (plugin by Chris Cannam)" ; + af:tag "Spectral", + "Timbre" ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:ModifiedKullbackLieblerOnsetDetectionFunction a owl:Class ; + dc:description "Modified Kullback-Liebler onset detection function." ; + af:computedIn "aubio" ; + af:similarTo af:KullbackLieblerOnsetDetectionFunction ; + rdfs:subClassOf af:AudioFeature . + +af:NonSilentRegions a owl:Class ; + af:computedIn "Vamp" ; + af:domain "time" ; + af:feature "Non-Silent Regions (Aubio Silence Detector)" ; + af:output "Sparse" ; + af:similarTo af:SilentRegions ; + af:source "Paul Brossier (plugin by Chris Cannam)" ; + rdfs:subClassOf af:AudioFeature . + +af:NoteOnset a owl:Class ; + dc:description "note onset times" ; + af:computedIn "MIRToolbox" ; + af:similarTo af:NoteOnsets ; + af:tag "Rhythm" ; + rdfs:subClassOf af:AudioFeature . + +af:NoteOnsets a owl:Class ; + af:computedIn "Vamp" ; + af:domain "frequency" ; + af:feature "Note Onsets (Note Onset Detector)" ; + af:output "Sparse" ; + af:similarTo af:NoteOnset ; + af:source "Queen Mary, University of London" ; + rdfs:subClassOf af:AudioFeature . + +af:PeakSpectrum a owl:Class ; + dc:description "Extract the spectral peaks from an audio spectrum" ; + af:computedIn "Vamp", + "libXtract" ; + af:domain "frequency" ; + af:feature "Peak Spectrum" ; + af:output "Dense" ; + af:similarTo af:BeatSpectrum ; + af:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" ; + rdfs:subClassOf af:AudioFeature . + +af:RhythmPattern a owl:Class ; + af:author "T. Lidy" ; + af:computedIn "MIREX" ; + af:feature "Rhythm Pattern" ; + af:similarTo af:RhythmPatterns ; + af:source "MIREX 2008" ; + rdfs:subClassOf af:AudioFeature . + +af:RhythmPatterns a owl:Class ; + af:appdomain "music information retrieval" ; + af:complexity "high" ; + af:computation "(Non-) Linear Weighting Function", + "Discrete Fourier Transform", + "Harmonic Peak Detection", + "Logarithm", + "Low-pass Filter", + "Regression", + "Windowing" ; + af:dimensions "80" ; + af:domain "modulation frequency" ; + af:feature "RhythmPatterns" ; + af:level "physical" ; + af:model "psychoacoustic" ; + af:similarTo af:RhythmPattern ; + af:temporalscale "interframe" ; + rdfs:subClassOf af:AudioFeature . + +af:Signal a owl:Class ; + rdfs:subClassOf af:AudioFeature . + +af:SilentRegions a owl:Class ; + af:computedIn "Vamp" ; + af:domain "time" ; + af:feature "Silent Regions (Aubio Silence Detector)" ; + af:output "Sparse" ; + af:similarTo af:NonSilentRegions ; + af:source "Paul Brossier (plugin by Chris Cannam)" ; + rdfs:subClassOf af:AudioFeature . + +af:SpectralAverageDeviation a owl:Class ; + dc:description "Extract the average deviation of an audio spectrum" ; + af:computedIn "Vamp" ; + af:domain "frequency" ; + af:feature "Spectral Average Deviation" ; + af:output "Dense" ; + af:similarTo af:Spectralaveragedeviation ; + af:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" ; + rdfs:subClassOf af:AudioFeature . + +af:SpectralFlatness a owl:Class ; + dc:description "Compute global spectral flatness using the ratio between geometric and arithmetic mean.", + "Extract the spectral flatness of an audio spectrum", + "Marsyas - Batch Feature Extract - Spectral Flatness Measure", + "a power spectrum's geometric mean divided by its arithmetic mean" ; + af:appdomain "fingerprinting" ; + af:complexity "medium" ; + af:computation "Discrete Fourier Transform", + "Logarithm", + "Mean", + "Regression", + "Windowing" ; + af:computedIn "CLAM", + "SuperCollider", + "Vamp", + "Yaafe", + "libXtract" ; + af:dimensions "parameterized" ; + af:domain "frequency", + "time" ; + af:feature "Marsyas - Batch Feature Extract - Spectral Flatness Measure", + "Spectral Flatness", + "SpectralFlatness" ; + af:level "perceptual" ; + af:output "Dense" ; + af:similarTo af:SpectralSharpness ; + af:source "Marsyas Plugins", + "libxtract by Jamie Bullock (plugin by Chris Cannam)" ; + af:tag "Spectral" ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:SpectralFlatnessAllBands a owl:Class ; + dc:description "Calculates a single spectral flatness value." ; + af:computedIn "Marsyas" ; + af:similarTo af:SpectralFlatnessPerBand ; + rdfs:subClassOf af:AudioFeature . + +af:SpectralFlatnessPerBand a owl:Class ; + dc:description "Compute spectral flatness per log-spaced band of 1/4 octave, as proposed in MPEG7 standard." ; + af:computedIn "Yaafe" ; + af:similarTo af:SpectralFlatnessAllBands ; + rdfs:subClassOf af:AudioFeature . + +af:SpectralPattern a owl:Class ; + af:author "Klaus Seyerlehner" ; + af:computedIn "MIREX" ; + af:feature "Spectral Pattern" ; + af:similarTo af:SpectralPatternCent ; + af:source "MIREX" ; + rdfs:subClassOf af:AudioFeature . + +af:SpectralPatternCent a owl:Class ; + af:computedIn "comirva" ; + af:similarTo af:SpectralPattern ; + rdfs:subClassOf af:AudioFeature . + +af:SpectralShapeStatistics a owl:Class ; + dc:description "Compute shape statistics of :class:MagnitudeSpectrum, (see [GR2004]_)." ; + af:computedIn "Yaafe" ; + af:similarTo af:TemporalShapeStatistics ; + rdfs:subClassOf af:AudioFeature . + +af:SpectralSkewness a owl:Class ; + dc:description "Extract the skewness of a range of values", + "Extract the skewness of an audio spectrum", + "The skewness is computed from the third order moment of the spectrum. A negative skewness indicates more energy on the lower part of the spectrum. A positive skewness indicates more energy on the high frequency of the spectrum." ; + af:computedIn "Vamp", + "aubio", + "libXtract" ; + af:domain "frequency" ; + af:feature "Skewness", + "Spectral Skewness" ; + af:output "Dense" ; + af:similarTo af:SpectralSharpness ; + af:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" ; + rdfs:subClassOf af:AudioFeature . + +af:SpectralStandardDeviation a owl:Class ; + dc:description "Extract the standard deviation of an audio spectrum" ; + af:computedIn "Vamp" ; + af:domain "frequency" ; + af:feature "Spectral Standard Deviation" ; + af:output "Dense" ; + af:similarTo af:Spectralstandarddeviation ; + af:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" ; + rdfs:subClassOf af:AudioFeature . + +af:SpectralVariation a owl:Class ; + dc:description "SpectralVariation is the normalized correlation of :class:spectrum MagnitudeSpectrum between consecutive frames. (see [GP2004]_)" ; + af:computedIn "Yaafe" ; + af:similarTo af:SpectralVariance ; + rdfs:subClassOf af:AudioFeature . + +af:Spectralaveragedeviation a owl:Class ; + af:computedIn "libXtract" ; + af:similarTo af:SpectralAverageDeviation ; + rdfs:subClassOf af:AudioFeature . + +af:Spectralstandarddeviation a owl:Class ; + af:computedIn "libXtract" ; + af:similarTo af:SpectralStandardDeviation ; + rdfs:subClassOf af:AudioFeature . + +af:Spectralvariance a owl:Class ; + af:computedIn "libXtract" ; + af:similarTo af:SpectralVariance ; + rdfs:subClassOf af:AudioFeature . + +af:StandardDeviation a owl:Class ; + dc:description "Extract the standard deviation of a range of values" ; + af:computedIn "Vamp" ; + af:domain "frequency" ; + af:feature "Standard Deviation" ; + af:output "Dense" ; + af:similarTo af:Standarddeviation ; + af:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" ; + rdfs:subClassOf af:AudioFeature . + +af:Standarddeviation a owl:Class ; + af:computedIn "libXtract" ; + af:similarTo af:StandardDeviation ; + rdfs:subClassOf af:AudioFeature . + +af:StatisticalSpectrumDescriptor a owl:Class ; + af:author "T. Lidy" ; + af:computedIn "MIREX" ; + af:feature "Statistical Spectrum Descriptor" ; + af:similarTo af:TemporalStatisticalSpectrumDescriptor ; + af:source "MIREX 2008" ; + rdfs:subClassOf af:AudioFeature . + +af:StereoSpectrumFeatures a owl:Class ; + dc:description "StereoSpectrumFeatures capture panning information" ; + af:computedIn "Marsyas" ; + af:similarTo af:StereoSpectrumSources ; + rdfs:subClassOf af:AudioFeature . + +af:StereoSpectrumSources a owl:Class ; + dc:description "StereoSpectrumSources estimates the number of sources placed into different stereo positions." ; + af:computedIn "Marsyas" ; + af:similarTo af:StereoSpectrumFeatures ; + rdfs:subClassOf af:AudioFeature . + +af:TemporalShapeStatistics a owl:Class ; + dc:description "Compute :ref:shape statistics shapestatistics of signal frames." ; + af:computedIn "Yaafe" ; + af:similarTo af:SpectralShapeStatistics ; + rdfs:subClassOf af:AudioFeature . + +af:TemporalStatisticalSpectrumDescriptor a owl:Class ; + af:author "T. Lidy" ; + af:computedIn "MIREX" ; + af:feature "Temporal Statistical Spectrum Descriptor" ; + af:similarTo af:StatisticalSpectrumDescriptor ; + af:source "MIREX 2008" ; + rdfs:subClassOf af:AudioFeature . + +af:TonalChangeDetectionFunction a owl:Class ; + af:computedIn "Vamp" ; + af:domain "time" ; + af:feature "Tonal Change Detection Function (Tonal Change)" ; + af:output "Sparse" ; + af:similarTo af:HarmonicChangeDetectionFunction ; + af:source "Queen Mary, University of London" ; + rdfs:subClassOf af:AudioFeature . + +af:TunedLogFrequencySpectrum a owl:Class ; + af:computedIn "Vamp" ; + af:domain "frequency" ; + af:feature "Tuned Log-Frequency Spectrum (NNLS Chroma)" ; + af:output "Dense" ; + af:similarTo af:LogFrequencySpectrum ; + af:source "Matthias Mauch" ; + rdfs:subClassOf af:AudioFeature . + +af:BeatSpectrum a owl:Class ; + dc:description "a measure of acoustic self-similarity as a function of time lag, computed from the similarity matrix" ; + af:appdomain "music information retrieval" ; + af:complexity "high" ; + af:computation "Autocorrelation", + "Cross-Correlation", + "Discrete Fourier Transform", + "Logarithm", + "Low-pass Filter", + "Windowing" ; + af:computedIn "MIRToolbox" ; + af:dimensions "parameterized" ; + af:domain "modulation frequency" ; + af:feature "BeatSpectrum" ; + af:level "perceptual" ; + af:similarTo af:BeatSpectra, + af:PeakSpectrum ; + af:tag "Rhythm" ; + af:temporalscale "interframe" ; + rdfs:subClassOf af:AudioFeature . + +af:BeatTrack a owl:Class ; + dc:description "Autocorrelation based beat tracker" ; + af:computedIn "SuperCollider" ; + af:similarTo af:BeatTrack2, + af:BeatTracker ; + rdfs:subClassOf af:AudioFeature . + +af:BeatTrack2 a owl:Class ; + dc:description "based on exhaustively testing particular template patterns against feature streams" ; + af:computedIn "SuperCollider" ; + af:similarTo af:BeatTrack, + af:BeatTracker ; + rdfs:subClassOf af:AudioFeature . + +af:BeatTracker a owl:Class ; + af:appdomain "music information retrieval" ; + af:complexity "high" ; + af:computation "Band-pass Filter (Bank)", + "Comb Filter (Bank)", + "Derivation, Difference", + "Low-pass Filter", + "Root Mean Square", + "Windowing" ; + af:dimensions "1" ; + af:domain "modulation frequency" ; + af:feature "BeatTracker" ; + af:level "perceptual" ; + af:similarTo af:BeatTrack, + af:BeatTrack2 ; + af:temporalscale "interframe" ; + rdfs:subClassOf af:AudioFeature . + +af:FluctuationPattern a owl:Class ; + af:computedIn "comirva" ; + af:similarTo af:FluctuationPatternCent, + af:FluctuationPatterns ; + rdfs:subClassOf af:AudioFeature . + +af:FluctuationPatternCent a owl:Class ; + af:computedIn "comirva" ; + af:similarTo af:FluctuationPattern, + af:FluctuationPatterns ; + rdfs:subClassOf af:AudioFeature . + +af:FluctuationPatterns a owl:Class ; + af:author "Franz de Leon" ; + af:computedIn "MIREX" ; + af:feature "Fluctuation Patterns" ; + af:similarTo af:FluctuationPattern, + af:FluctuationPatternCent ; + af:source "MIREX" ; + rdfs:subClassOf af:AudioFeature . + +af:MPEG7HarmonicSpectralDeviation a owl:Class ; + af:appdomain "music information retrieval" ; + af:complexity "medium" ; + af:computation "Discrete Fourier Transform", + "Logarithm", + "Mean", + "Median", + "Windowing", + "Zero-/Level Crossing Detector" ; + af:computedIn "MPEG-7" ; + af:dimensions "1" ; + af:domain "frequency" ; + af:feature "MPEG7HarmonicSpectralDeviation" ; + af:level "perceptual" ; + af:similarTo af:MPEG7HarmonicSpectralCentroid, + af:MPEG7HarmonicSpectralVariation ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:MPEG7HarmonicSpectralSpread a owl:Class ; + af:appdomain "music information retrieval" ; + af:complexity "medium" ; + af:computation "Discrete Fourier Transform", + "Median", + "Windowing", + "Zero-/Level Crossing Detector" ; + af:computedIn "MPEG-7" ; + af:dimensions "1" ; + af:domain "frequency" ; + af:feature "MPEG7HarmonicSpectralSpread" ; + af:level "perceptual" ; + af:similarTo af:MPEG7HarmonicSpectralCentroid, + af:MPEG7HarmonicSpectralVariation ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:MPEG7HarmonicSpectralVariation a owl:Class ; + af:appdomain "music information retrieval" ; + af:complexity "medium" ; + af:computation "Cross-Correlation", + "Discrete Fourier Transform", + "Windowing", + "Zero-/Level Crossing Detector" ; + af:computedIn "MPEG-7" ; + af:dimensions "1" ; + af:domain "frequency" ; + af:feature "MPEG7HarmonicSpectralVariation" ; + af:level "perceptual" ; + af:similarTo af:MPEG7HarmonicSpectralDeviation, + af:MPEG7HarmonicSpectralSpread ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:SpectralMean a owl:Class ; + dc:description "the spectral power mean value." ; + af:computedIn "CLAM" ; + af:similarTo af:SpectralPeaks, + af:Spectralmean ; + af:tag "Spectral" ; + rdfs:subClassOf af:AudioFeature . + +af:SpectralPeaks a owl:Class ; + af:appdomain "music information retrieval" ; + af:complexity "low" ; + af:computation "Derivation, Difference", + "Discrete Fourier Transform", + "Sum, Weighted Sum", + "Windowing" ; + af:dimensions "parameterized" ; + af:domain "frequency" ; + af:feature "SpectralPeaks" ; + af:level "physical" ; + af:similarTo af:SpectralMean, + af:Spectralmean ; + af:temporalscale "interframe" ; + rdfs:subClassOf af:AudioFeature . + +af:SpectralSharpness a owl:Class ; + dc:description "Extract the spectral sharpness of an audio spectrum" ; + af:computedIn "Vamp" ; + af:domain "frequency" ; + af:feature "Spectral Sharpness" ; + af:output "Dense" ; + af:similarTo af:SpectralFlatness, + af:SpectralSkewness ; + af:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" ; + rdfs:subClassOf af:AudioFeature . + +af:SpectralVariance a owl:Class ; + dc:description "Extract the variance of an audio spectrum" ; + af:computedIn "Vamp" ; + af:domain "frequency" ; + af:feature "Spectral Variance" ; + af:output "Dense" ; + af:similarTo af:SpectralVariation, + af:Spectralvariance ; + af:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" ; + rdfs:subClassOf af:AudioFeature . + +af:Spectralmean a owl:Class ; + af:computedIn "libXtract" ; + af:similarTo af:SpectralMean, + af:SpectralPeaks ; + rdfs:subClassOf af:AudioFeature . + +af:MPEG7HarmonicSpectralCentroid a owl:Class ; + af:appdomain "music information retrieval" ; + af:complexity "medium" ; + af:computation "Discrete Fourier Transform", + "Mean", + "Windowing", + "Zero-/Level Crossing Detector" ; + af:computedIn "MPEG-7" ; + af:dimensions "1" ; + af:domain "frequency" ; + af:feature "MPEG7HarmonicSpectralCentroid" ; + af:level "perceptual" ; + af:similarTo af:HarmonicSpectralCentroid, + af:MPEG7HarmonicSpectralDeviation, + af:MPEG7HarmonicSpectralSpread ; + af:temporalscale "intraframe" ; + rdfs:subClassOf af:AudioFeature . + +af:Irregularity a owl:Class ; + dc:description "The degree of variation of the successive peaks of the spectrum" ; + af:computedIn "MIRToolbox" ; + af:similarTo af:IrregularityI, + af:IrregularityII, + af:Irregularityj, + af:Irregularityk ; + af:tag "Timbre" ; + rdfs:subClassOf af:AudioFeature . + +af:IrregularityI a owl:Class ; + dc:description "Extract the irregularity (type I) of an audio spectrum" ; + af:computedIn "Vamp" ; + af:domain "frequency" ; + af:feature "Irregularity I" ; + af:output "Dense" ; + af:similarTo af:Irregularity, + af:IrregularityII, + af:Irregularityj, + af:Irregularityk ; + af:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" ; + rdfs:subClassOf af:AudioFeature . + +af:IrregularityII a owl:Class ; + dc:description "Extract the irregularity (type II) of an audio spectrum" ; + af:computedIn "Vamp" ; + af:domain "frequency" ; + af:feature "Irregularity II" ; + af:output "Dense" ; + af:similarTo af:Irregularity, + af:IrregularityI, + af:Irregularityj, + af:Irregularityk ; + af:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" ; + rdfs:subClassOf af:AudioFeature . + +af:Irregularityj a owl:Class ; + af:computedIn "libXtract" ; + af:similarTo af:Irregularity, + af:IrregularityI, + af:IrregularityII, + af:Irregularityk ; + rdfs:subClassOf af:AudioFeature . + +af:Irregularityk a owl:Class ; + af:computedIn "libXtract" ; + af:similarTo af:Irregularity, + af:IrregularityI, + af:IrregularityII, + af:Irregularityj ; + rdfs:subClassOf af:AudioFeature . + +af:Tristimulus1 a owl:Class ; + af:computedIn "libXtract" ; + af:similarTo af:Tristimulus2, + af:Tristimulus3, + af:TristimulusI, + af:TristimulusII, + af:TristimulusIII ; + rdfs:subClassOf af:AudioFeature . + +af:Tristimulus2 a owl:Class ; + af:computedIn "libXtract" ; + af:similarTo af:Tristimulus1, + af:Tristimulus3, + af:TristimulusI, + af:TristimulusII, + af:TristimulusIII ; + rdfs:subClassOf af:AudioFeature . + +af:Tristimulus3 a owl:Class ; + af:computedIn "libXtract" ; + af:similarTo af:Tristimulus1, + af:Tristimulus2, + af:TristimulusI, + af:TristimulusII, + af:TristimulusIII ; + rdfs:subClassOf af:AudioFeature . + +af:TristimulusI a owl:Class ; + dc:description "Extract the tristimulus (type I) of an audio spectrum" ; + af:computedIn "Vamp" ; + af:domain "frequency" ; + af:feature "Tristimulus I" ; + af:output "Dense" ; + af:similarTo af:Tristimulus1, + af:Tristimulus2, + af:Tristimulus3, + af:TristimulusII, + af:TristimulusIII ; + af:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" ; + rdfs:subClassOf af:AudioFeature . + +af:TristimulusII a owl:Class ; + dc:description "Extract the tristimulus (type II) of an audio spectrum" ; + af:computedIn "Vamp" ; + af:domain "frequency" ; + af:feature "Tristimulus II" ; + af:output "Dense" ; + af:similarTo af:Tristimulus1, + af:Tristimulus2, + af:Tristimulus3, + af:TristimulusI, + af:TristimulusIII ; + af:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" ; + rdfs:subClassOf af:AudioFeature . + +af:TristimulusIII a owl:Class ; + dc:description "Extract the tristimulus (type III) of an audio spectrum" ; + af:computedIn "Vamp" ; + af:domain "frequency" ; + af:feature "Tristimulus III" ; + af:output "Dense" ; + af:similarTo af:Tristimulus1, + af:Tristimulus2, + af:Tristimulus3, + af:TristimulusI, + af:TristimulusII ; + af:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" ; + rdfs:subClassOf af:AudioFeature . + +af:AudioFeature rdfs:subClassOf af:Signal . +
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/af-catalogue.rdf Mon Feb 25 14:40:54 2013 +0000 @@ -0,0 +1,3959 @@ +<?xml version="1.0" encoding="UTF-8"?> +<rdf:RDF + xmlns:af="http://sovarr.c4dm.eecs.qmul.ac.uk/features/" + xmlns:dc="http://purl.org/dc/elements/1.1/" + xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" + xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" +> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Spectrum2Mel"> + <af:computedIn>Marsyas</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Convert spectrum magnitude (e.g. output from PowerSpectrum MarSystem)into Mel frequency scale.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/RhythmHistogram"> + <af:feature>Rhythm Histogram</af:feature> + <af:author>T. Lidy</af:author> + <af:source>MIREX 2008</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>MIREX</af:computedIn> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ConstantQSpectrogram"> + <af:feature>Constant-Q Spectrogram</af:feature> + <dc:description>Extract a spectrogram with constant ratio of centre frequency to resolution from the input audio</dc:description> + <af:source>Queen Mary, University of London</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LogarithmicFluctuationPattern"> + <af:feature>Logarithmic Fluctuation Pattern</af:feature> + <af:author>Klaus Seyerlehner</af:author> + <af:source>MIREX 2012</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>MIREX</af:computedIn> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ShortTimeEnergy"> + <af:temporalscale>intraframe</af:temporalscale> + <af:complexity>low</af:complexity> + <af:feature>ShortTimeEnergy</af:feature> + <af:level>physical</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>several</af:appdomain> + <af:domain>temporal</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:dimensions>1</af:dimensions> + <af:computation>Windowing</af:computation> + <af:computation>Deviation, Sum of Differences</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ZeroCrossingRate"> + <af:temporalscale>intraframe</af:temporalscale> + <af:complexity>low</af:complexity> + <af:feature>Marsyas - Batch Feature Extract - Zero Crossings</af:feature> + <af:feature>Zero Crossings</af:feature> + <af:feature>ZeroCrossingRate</af:feature> + <af:feature>Zero Crossing Rate</af:feature> + <dc:description>Compute zero-crossing rate in frames. see [SS1997]_.</dc:description> + <dc:description>a measure of the number of time the signal value cross the zero axe, averaged over the whole signal</dc:description> + <dc:description>Detect and count zero crossing points</dc:description> + <dc:description>Extract the zero crossing rate of an audio signal</dc:description> + <dc:description>Outputs a frequency based upon the distance between interceptions of the X axis. The X intercepts are determined via linear interpolation so this gives better than just integer wavelength resolution. This is a very crude pitch follower, but can be useful in some situations.</dc:description> + <dc:description>The number of times the waveform changed sign. An indication of frequency as well as noisiness.</dc:description> + <dc:description>Marsyas - Batch Feature Extract - Zero Crossings</dc:description> + <dc:description>Time-domain ZeroCrossings</dc:description> + <af:source>Marsyas Plugins</af:source> + <af:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</af:source> + <af:level>physical</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>several</af:appdomain> + <af:domain>temporal</af:domain> + <af:domain>time</af:domain> + <af:tag>Timbre</af:tag> + <af:tag>Audio</af:tag> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:name>Zero Crossings</af:name> + <af:computedIn>CLAM</af:computedIn> + <af:computedIn>Marsyas</af:computedIn> + <af:computedIn>MIRToolbox</af:computedIn> + <af:computedIn>Yaafe</af:computedIn> + <af:computedIn>jMIR</af:computedIn> + <af:computedIn>SuperCollider</af:computedIn> + <af:computedIn>Vamp</af:computedIn> + <af:computedIn>libXtract</af:computedIn> + <af:computedIn>sMIRk</af:computedIn> + <af:dimensions>1</af:dimensions> + <af:abbreviation>ZCR</af:abbreviation> + <af:output>Dense</af:output> + <af:computation>Spectral binning</af:computation> + <af:computation>Windowing</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralFlux"> + <af:temporalscale>intraframe</af:temporalscale> + <af:complexity>low</af:complexity> + <af:feature>SpectralFlux</af:feature> + <dc:description>Compute flux of :class:spectrum MagnitudeSpectrum between consecutives frames.</dc:description> + <dc:description>Spectral Flux</dc:description> + <dc:description>A measure of the amount of spectral change in a signal. //\n Found by calculating the change in the magnitude spectrum //\n from frame to frame.</dc:description> + <dc:description>Flux calculate the flux between the current and prev. spectrum (e.g. output of PowerSpectrum)</dc:description> + <af:level>physical</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>several</af:appdomain> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:name>Spectral Flux</af:name> + <af:computedIn>aubio</af:computedIn> + <af:computedIn>Marsyas</af:computedIn> + <af:computedIn>Yaafe</af:computedIn> + <af:computedIn>jMIR</af:computedIn> + <af:computedIn>libXtract</af:computedIn> + <af:computedIn>sMIRk</af:computedIn> + <af:dimensions>1</af:dimensions> + <af:abbreviation>SF</af:abbreviation> + <af:computation>Derivation, Difference</af:computation> + <af:computation>Root Mean Square</af:computation> + <af:computation>Discrete Fourier Transform</af:computation> + <af:computation>Windowing</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralFluxOnsetDetectionFunction"> + <af:computedIn>MIRToolbox</af:computedIn> + <af:tag>Rhythm</af:tag> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Use peaks of spectral flux to detect onsets</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/F0"> + <af:computedIn>libXtract</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MPEG7HarmonicSpectralSpread"> + <af:temporalscale>intraframe</af:temporalscale> + <af:complexity>medium</af:complexity> + <af:feature>MPEG7HarmonicSpectralSpread</af:feature> + <af:level>perceptual</af:level> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MPEG7HarmonicSpectralCentroid"/> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MPEG7HarmonicSpectralVariation"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>music information retrieval</af:appdomain> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>MPEG-7</af:computedIn> + <af:dimensions>1</af:dimensions> + <af:computation>Median</af:computation> + <af:computation>Discrete Fourier Transform</af:computation> + <af:computation>Windowing</af:computation> + <af:computation>Zero-/Level Crossing Detector</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MPEG7TemporalCentroid"> + <af:temporalscale>interframe</af:temporalscale> + <af:complexity>low</af:complexity> + <af:feature>MPEG7TemporalCentroid</af:feature> + <af:level>physical</af:level> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MPEG7SpectralCentroid"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>music information retrieval</af:appdomain> + <af:domain>temporal</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>MPEG-7</af:computedIn> + <af:dimensions>1</af:dimensions> + <af:computation>Mean</af:computation> + <af:computation>Power</af:computation> + <af:computation>Windowing</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AutoCorrelationPeaksIntegrator"> + <af:computedIn>Yaafe</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Feature transform that compute peaks of the autocorrelation function, outputs peaks and amplitude.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PerceptualLinearPrediction"> + <af:temporalscale>intraframe</af:temporalscale> + <af:complexity>high</af:complexity> + <af:feature>PerceptualLinearPrediction</af:feature> + <af:model>psychoacoustic</af:model> + <af:level>physical</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>speech recognition</af:appdomain> + <af:domain>cepstral</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:dimensions>parameterized</af:dimensions> + <af:computation>Regression</af:computation> + <af:computation>(Non-) Linear Weighting Function</af:computation> + <af:computation>Cepstral Recursion Formula</af:computation> + <af:computation>Windowing</af:computation> + <af:computation>Discrete Fourier Transform</af:computation> + <af:computation>Discrete Cosine Transform</af:computation> + <af:computation>Autoregression (Linear Prediction Analysis)</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ConstantQMFCC"> + <af:name>ConstantQ derived MFCCs</af:name> + <af:computedIn>jMIR</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>MFCCs directly caluclated from ConstantQ exponential bins</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/BeatSum"> + <af:name>Beat Sum</af:name> + <af:computedIn>jMIR</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>The sum of all entries in the beat histogram. This is a good measure of the importance of regular beats in a signal.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Rmsamplitude"> + <af:computedIn>libXtract</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PerceptualSpread"> + <af:computedIn>Yaafe</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Compute the spread of :class:Loudness coefficients, according to [GP2004]_.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MELODIAMelodyExtraction(intermediatesteps)"> + <af:feature>MELODIA - Melody Extraction (intermediate steps)</af:feature> + <dc:description>Provides visualisations of the intermediate steps calculated by the melody extraction algorithm implemented in the MELODIA - Melody Extraction plug-in. For further details please read: J. Salamon and E. Gomez, "Melody Extraction from Polyphonic Music Signals using Pitch Contour Characteristics", IEEE Transactions on Audio, Speech and Language Processing, 20(6):1759-1770, 2012. We would highly appreciate the above reference being cited in publications of work in which this plug-in was used.</dc:description> + <af:source>Music Technology Group, Universitat Pompeu Fabra</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>time</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FluctuationPattern"> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FluctuationPatterns"/> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FluctuationPatternCent"/> + <af:computedIn>comirva</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LinearSpectralPairs"> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LineSpectralPairs"/> + <af:computedIn>Marsyas</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Compute Linear Spectral Pair (LSP) coefficientsTakes the output of ::LPC() and calculates the corresponding LSP values.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/RunningStatistics"> + <af:computedIn>Marsyas</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Gathers the running average, variance, standard deviation, etc.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Signal"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralFlatnessAllBands"> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralFlatnessPerBand"/> + <af:computedIn>Marsyas</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Calculates a single spectral flatness value.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MPEG7HarmonicSpectralDeviation"> + <af:temporalscale>intraframe</af:temporalscale> + <af:complexity>medium</af:complexity> + <af:feature>MPEG7HarmonicSpectralDeviation</af:feature> + <af:level>perceptual</af:level> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MPEG7HarmonicSpectralCentroid"/> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MPEG7HarmonicSpectralVariation"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>music information retrieval</af:appdomain> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>MPEG-7</af:computedIn> + <af:dimensions>1</af:dimensions> + <af:computation>Median</af:computation> + <af:computation>Mean</af:computation> + <af:computation>Windowing</af:computation> + <af:computation>Discrete Fourier Transform</af:computation> + <af:computation>Logarithm</af:computation> + <af:computation>Zero-/Level Crossing Detector</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ChromagramandBassChromagram"> + <af:feature>Chromagram and Bass Chromagram (NNLS Chroma)</af:feature> + <af:source>Matthias Mauch</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FluctuationPatternCent"> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FluctuationPatterns"/> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FluctuationPattern"/> + <af:computedIn>comirva</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PulseMetric"> + <af:temporalscale>intraframe</af:temporalscale> + <af:complexity>medium</af:complexity> + <af:feature>PulseMetric</af:feature> + <af:level>perceptual</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>audio segmentation</af:appdomain> + <af:domain>modulation frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:dimensions>1</af:dimensions> + <af:computation>Autocorrelation</af:computation> + <af:computation>Root Mean Square</af:computation> + <af:computation>Band-pass Filter (Bank)</af:computation> + <af:computation>Windowing</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/TonalDissonance"> + <af:computedIn>PsySound3</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DeltaSpectralPattern"> + <af:feature>Delta Spectral Pattern</af:feature> + <af:author>Klaus Seyerlehner</af:author> + <af:source>MIREX 2012</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>MIREX</af:computedIn> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/VarianceDeltaSpectralPattern"> + <af:feature>Variance Delta Spectral Pattern</af:feature> + <af:author>Klaus Seyerlehner</af:author> + <af:source>MIREX 2012</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>MIREX</af:computedIn> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/EnvelopeShapeStatistics"> + <af:computedIn>Yaafe</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Centroid, spread, skewness and kurtosis of each frame's amplitude envelope. For more details about moments, see :ref:Shape Statistics shapestatistics.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AverageMagnitudeDifferenceFunction"> + <af:feature>Average Magnitude Difference Function</af:feature> + <dc:description>Average Magnitude Difference Function</dc:description> + <dc:description>Extract the AMDF of an audio signal</dc:description> + <af:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</af:source> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AverageSquaredDifferenceFunction"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>time</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:computedIn>Marsyas</af:computedIn> + <af:computedIn>libXtract</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/HarmonicChangeValue"> + <af:feature>Harmonic Change Value (Chordino)</af:feature> + <af:source>Matthias Mauch</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralPeakStructure"> + <af:temporalscale>intraframe</af:temporalscale> + <af:complexity>medium</af:complexity> + <af:feature>SpectralPeakStructure</af:feature> + <af:level>perceptual</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>music information retrieval</af:appdomain> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:dimensions>1</af:dimensions> + <af:computation>Derivation, Difference</af:computation> + <af:computation>Entropy</af:computation> + <af:computation>Windowing</af:computation> + <af:computation>Discrete Fourier Transform</af:computation> + <af:computation>Spectral binning</af:computation> + <af:computation>Zero-/Level Crossing Detector</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralPeaks"> + <af:temporalscale>interframe</af:temporalscale> + <af:complexity>low</af:complexity> + <af:feature>SpectralPeaks</af:feature> + <af:level>physical</af:level> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralMean"/> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Spectralmean"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>music information 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rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:dimensions>256</af:dimensions> + <af:computation>Derivation, Difference</af:computation> + <af:computation>(Non-) Linear Weighting Function</af:computation> + <af:computation>Windowing</af:computation> + <af:computation>Band-pass Filter Bank</af:computation> + <af:computation>Discrete Cosine Transform</af:computation> + <af:computation>Logarithm</af:computation> + <af:computation>Low-pass Filter</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AuditoryFilterBankTemporalEnvelopes"> + <af:temporalscale>intraframe</af:temporalscale> + <af:complexity>medium</af:complexity> + <af:feature>AuditoryFilterBankTemporalEnvelopes</af:feature> + <af:model>psychoacoustic</af:model> + <af:level>physical</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>music information retrieval</af:appdomain> + <af:domain>modulation frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:dimensions>62</af:dimensions> + <af:computation>Band-pass Filter (Bank)</af:computation> + <af:computation>Energy Spectral Density</af:computation> + <af:computation>Root Mean Square</af:computation> + <af:computation>Windowing</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralSkewness"> + <af:feature>Spectral Skewness</af:feature> + <af:feature>Skewness</af:feature> + <dc:description>Extract the skewness of an audio spectrum</dc:description> + <dc:description>Extract the skewness of a range of values</dc:description> + <dc:description>The skewness is computed from the third order moment of the spectrum. A negative skewness indicates more energy on the lower part of the spectrum. A positive skewness indicates more energy on the high frequency of the spectrum.</dc:description> + <af:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</af:source> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralSharpness"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:computedIn>aubio</af:computedIn> + <af:computedIn>libXtract</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/StandardDeviation"> + <af:feature>Standard Deviation</af:feature> + <dc:description>Extract the standard deviation of a range of values</dc:description> + <af:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</af:source> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Standarddeviation"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FeatureVariances"> + <af:feature>Feature Variances (Similarity)</af:feature> + <af:source>Queen Mary, University of London</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>time</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Signal"> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MagnitudeSpectrum"> + <af:name>Magnitude Spectrum</af:name> + <af:computedIn>Yaafe</af:computedIn> + <af:computedIn>jMIR</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>A measure of the strength of different frequency components.</dc:description> + <dc:description>Compute frame's magnitude spectrum, using an analysis window (Hanning or Hamming), or not.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MPEG7AudioHarmonicity"> + <af:temporalscale>intraframe</af:temporalscale> + <af:complexity>medium</af:complexity> + <af:feature>MPEG7AudioHarmonicity</af:feature> + <af:level>perceptual</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>several</af:appdomain> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>MPEG-7</af:computedIn> + <af:dimensions>2</af:dimensions> + <af:computation>Sum, Weighted Sum</af:computation> + <af:computation>Autocorrelation</af:computation> + <af:computation>Windowing</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralPercentile"> + <af:computedIn>SuperCollider</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>calculates the cumulative distribution of the frequency spectrum, and outputs the frequency value which corresponds to the desired percentile</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FFTBinFrequencies"> + <af:name>FFT Bin Frequency Labels</af:name> + <af:computedIn>jMIR</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>The bin label, in Hz, of each power spectrum or magnitude spectrum bin. Not useful as a feature in itself, but useful for calculating other features from the magnitude spectrum and power spectrum.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MultiresolutionEntropy"> + <af:temporalscale>intraframe</af:temporalscale> + <af:complexity>medium</af:complexity> + <af:feature>MultiresolutionEntropy</af:feature> + <af:level>perceptual</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>speech recognition</af:appdomain> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:dimensions>parameterized</af:dimensions> + <af:computation>Regression</af:computation> + <af:computation>Entropy</af:computation> + <af:computation>Discrete Fourier Transform</af:computation> + <af:computation>Windowing</af:computation> + <af:computation>Normalization</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MPEG7SpectralCentroid"> + <af:temporalscale>global</af:temporalscale> + <af:complexity>low</af:complexity> + <af:feature>MPEG7SpectralCentroid</af:feature> + <af:level>perceptual</af:level> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MPEG7TemporalCentroid"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>music information retrieval</af:appdomain> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>MPEG-7</af:computedIn> + <af:dimensions>1</af:dimensions> + <af:computation>Mean</af:computation> + <af:computation>Discrete Fourier Transform</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AreaMomentsLogConstantQ"> + <af:name>Area Method of Moments of Log of ConstantQ transform</af:name> + <af:computedIn>jMIR</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>2D statistical method of moments of the log of the ConstantQ transform</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/StrongestFrequencyViaZeroCrossings"> + <af:name>Strongest Frequency Via Zero Crossings</af:name> + <af:computedIn>jMIR</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>The strongest frequency component of a signal, in Hz, found via the number of zero-crossings.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/KullbackLieblerOnsetDetectionFunction"> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ModifiedKullbackLieblerOnsetDetectionFunction"/> + <af:computedIn>aubio</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Kullback-Liebler onset detection function.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AmplitudeModulation"> + <af:computedIn>Yaafe</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Tremelo and Grain description, according to [SE2005]_ and [AE2001]_.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/HarmonicSpectrum"> + <af:feature>Harmonic Spectrum</af:feature> + <dc:description>Extract the harmonics from an audio spectrum</dc:description> + <af:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:computedIn>libXtract</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/HighFrequencyContentOnsetDetectionFunction"> + <af:computedIn>aubio</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>This method computes the High Frequency Content (HFC) of the input spectral frame. The resulting function is efficient at detecting percussive onsets</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/HarmonicCoefficient"> + <af:temporalscale>intraframe</af:temporalscale> + <af:complexity>low</af:complexity> + <af:feature>HarmonicCoefficient</af:feature> + <af:level>perceptual</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>audio segmentation</af:appdomain> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:dimensions>1</af:dimensions> + <af:computation>Sum, Weighted Sum</af:computation> + <af:computation>Autocorrelation</af:computation> + <af:computation>Windowing</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AubioNoteTracker"> + <af:feature>Aubio Note Tracker</af:feature> + <dc:description>Estimate note onset positions, pitches and durations</dc:description> + <af:source>Paul Brossier (plugin by Chris Cannam)</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>time</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Sparse</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/RiseTime"> + <af:computedIn>CLAM</af:computedIn> + <af:tag>Audio</af:tag> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>the time duration between the signal reached 2% of it maximum value to the time it reaches 80% of its maximum value</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AdaptiveSpectrogram"> + <af:feature>Adaptive Spectrogram</af:feature> + <dc:description>Produce an adaptive spectrogram by adaptive selection from spectrograms at multiple resolutions</dc:description> + <af:source>Queen Mary, University of London</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>time</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Beats"> + <af:feature>Beats (Tempo and Beat Tracker)</af:feature> + <af:feature>Beats (Aubio Beat Tracker)</af:feature> + <af:feature>Beats (Bar and Beat Tracker)</af:feature> + <af:source>Queen Mary, University of London</af:source> + <af:source>Paul Brossier (method by Matthew Davies, plugin by Chris Cannam)</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>time</af:domain> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Sparse</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AreaPolynomialApproximationLogConstantQ"> + <dc:description>coeffecients of 2D polynomial best describing the input matrix.</dc:description> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AreaPolynomialApproximationConstantQMFCC"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:name>2D Polynomial Approximation of Log of ConstantQ</af:name> + <af:computedIn>jMIR</af:computedIn> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/RatescalefrequencyFeatures"> + <af:temporalscale>interframe</af:temporalscale> + <af:complexity>high</af:complexity> + <af:feature>RatescalefrequencyFeatures</af:feature> + <af:model>psychoacoustic</af:model> + <af:level>physical</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>environmental sound recognition</af:appdomain> + <af:domain>eigendomain</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:dimensions>256</af:dimensions> + <af:computation>Derivation, Difference</af:computation> + <af:computation>(Non-) Linear Weighting Function</af:computation> + <af:computation>Principal Component Analysis</af:computation> + <af:computation>Root Mean Square</af:computation> + <af:computation>Discrete Wavelet Transform</af:computation> + <af:computation>Windowing</af:computation> + <af:computation>Band-pass Filter Bank</af:computation> + <af:computation>Low-pass Filter</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/StatisticalSpectrumDescriptor"> + <af:feature>Statistical Spectrum Descriptor</af:feature> + <af:author>T. Lidy</af:author> + <af:source>MIREX 2008</af:source> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/TemporalStatisticalSpectrumDescriptor"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>MIREX</af:computedIn> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/WaveletPyramid"> + <af:computedIn>Marsyas</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Pyramid wavelet algorithm</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SubbandEnergyRatio"> + <af:temporalscale>intraframe</af:temporalscale> + <af:complexity>low</af:complexity> + <af:feature>SubbandEnergyRatio</af:feature> + <af:level>physical</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>several</af:appdomain> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:dimensions>parameterized</af:dimensions> + <af:computation>Regression</af:computation> + <af:computation>Energy Spectral Density</af:computation> + <af:computation>Discrete Fourier Transform</af:computation> + <af:computation>Windowing</af:computation> + <af:computation>Normalization</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/KeySOM"> + <af:computedIn>MIRToolbox</af:computedIn> + <af:tag>Tonality</af:tag> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Projects the chromagram into a self-organizing map</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/KeyMode"> + <af:feature>Key Mode (Key Detector)</af:feature> + <af:source>Queen Mary, University of London</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>time</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Sparse</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/TonicPitch"> + <af:feature>Tonic Pitch (Key Detector)</af:feature> + <af:source>Queen Mary, University of London</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>time</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Sparse</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/TonalChangeDetectionFunction"> + <af:feature>Tonal Change Detection Function (Tonal Change)</af:feature> + <af:source>Queen Mary, University of London</af:source> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/HarmonicChangeDetectionFunction"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>time</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Sparse</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ZeroCrossingPeakAmplitudes"> + <af:temporalscale>intraframe</af:temporalscale> + <af:complexity>medium</af:complexity> + <af:feature>ZeroCrossingPeakAmplitudes</af:feature> + <af:model>psychoacoustic</af:model> + <af:level>physical</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>speech recognition</af:appdomain> + <af:domain>temporal</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:dimensions>parameterized</af:dimensions> + <af:computation>Logarithm</af:computation> + <af:computation>Band-pass Filter (Bank)</af:computation> + <af:computation>Root Mean Square</af:computation> + <af:computation>Spectral binning</af:computation> + <af:computation>Windowing</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AimHCL"> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AimHCL2"/> + <af:computedIn>Marsyas</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Halfwave rectification, compression and lowpass filtering</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LogFrequencySpectrum"> + <af:feature>Log-Frequency Spectrum (NNLS Chroma)</af:feature> + <af:source>Matthias Mauch</af:source> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/TunedLogFrequencySpectrum"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/OctaveBasedSpectralContrast"> + <af:feature>Octave-based Spectral Contrast</af:feature> + <af:author>Shin-Cheol Lim</af:author> + <af:source>MIREX</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>MIREX</af:computedIn> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Key"> + <af:tag>Tonality</af:tag> + <af:feature>Key (Key Detector)</af:feature> + <dc:description>The best candidate key</dc:description> + <af:source>Queen Mary, University of London</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>time</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:computedIn>MIRToolbox</af:computedIn> + <af:output>Sparse</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Power"> + <af:computedIn>Marsyas</af:computedIn> + <af:computedIn>libXtract</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>compute the RMS Power of the input observations into one column*/</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ChordEstimate"> + <af:feature>Chord Estimate (Chordino)</af:feature> + <af:source>Matthias Mauch</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Sparse</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SemitoneSpectrum"> + <af:feature>Semitone Spectrum (NNLS Chroma)</af:feature> + <af:source>Matthias Mauch</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LineSpectralFrequencies"> + <af:temporalscale>intraframe</af:temporalscale> + <af:complexity>medium</af:complexity> + <af:feature>LineSpectralFrequencies</af:feature> + <dc:description>Compute the Line Spectral Frequency (LSF) coefficients of a signal frame. Algorithm was adapted from ([TB2006]_, [SH1976]_).</dc:description> + <af:level>physical</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>several</af:appdomain> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Yaafe</af:computedIn> + <af:dimensions>parameterized</af:dimensions> + <af:computation>Autoregression (Linear Prediction Analysis)</af:computation> + <af:computation>Percentile</af:computation> + <af:computation>Windowing</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteWaveletTransform"> + <af:feature>Discrete Wavelet Transform</af:feature> + <dc:description>Visualisation by scalogram</dc:description> + <af:source>Queen Mary, University of London</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>time</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/StrengthOfStrongestBeat"> + <af:name>Strength Of Strongest Beat</af:name> + <af:computedIn>jMIR</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>How strong the strongest beat in the beat histogram is compared to other potential beats.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntegralLoudness"> + <af:temporalscale>intraframe</af:temporalscale> + <af:complexity>high</af:complexity> + <af:feature>IntegralLoudness</af:feature> + <af:model>psychoacoustic</af:model> + <af:level>perceptual</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>music information retrieval</af:appdomain> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:dimensions>1</af:dimensions> + <af:computation>Exponential Function</af:computation> + <af:computation>(Non-) Linear Weighting Function</af:computation> + <af:computation>Root Mean Square</af:computation> + <af:computation>Windowing</af:computation> + <af:computation>Discrete Fourier Transform</af:computation> + <af:computation>Logarithm</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MelscaleFrequencyCepstralCoefficients"> + <af:temporalscale>intraframe</af:temporalscale> + <af:complexity>high</af:complexity> + <af:feature>Mel-Frequency Cepstral Coefficients</af:feature> + <af:feature>MelscaleFrequencyCepstralCoefficients</af:feature> + <af:feature>Coefficients (Mel-Frequency Cepstral Coefficients)</af:feature> + <af:feature>Marsyas - Batch Feature Extract - Mel-Frequency Cepstral Coefficients</af:feature> + <dc:description>Calculate a series of MFCC vectors from the audio</dc:description> + <dc:description>MFCC Mel-Frequency Cepstral Coefficients.Takes as input the N/2+1 spectrum Magnitude points output by PowerSpectrum.</dc:description> + <dc:description>Mel-frequency cepstrum coefficients object</dc:description> + <dc:description>MFCC calculations based upon Orange Cow code</dc:description> + <dc:description>Compute the Mel-frequencies cepstrum coefficients [DM1980]_.</dc:description> + <dc:description>Marsyas - Batch Feature Extract - Mel-Frequency Cepstral Coefficients</dc:description> + <dc:description>Extract MFCC from an audio spectrum</dc:description> + <dc:description>Generates a set of MFCCs; these are obtained from a band-based frequency representation (using the Mel scale by default), and then a discrete cosine transform (DCT). The DCT is an efficient approximation for principal components analysis, so that it allows a compression, or reduction of dimensionality, of the data, in this case reducing 42 band readings to a smaller set of MFCCs. A small number of features (the coefficients) end up describing the spectrum. The MFCCs are commonly used as timbral descriptors.</dc:description> + <af:model>psychoacoustic</af:model> + <af:source>Queen Mary, University of London</af:source> + <af:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</af:source> + <af:source>Marsyas Plugins</af:source> + <af:level>physical</af:level> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/BarkscaleFrequencyCepstralCoefficients"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>several</af:appdomain> + <af:domain>time</af:domain> + <af:domain>cepstral</af:domain> + <af:domain>frequency</af:domain> + <af:tag>Spectral</af:tag> + <af:tag>Timbre</af:tag> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:name>MFCC</af:name> + <af:computedIn>aubio</af:computedIn> + <af:computedIn>CLAM</af:computedIn> + <af:computedIn>Marsyas</af:computedIn> + <af:computedIn>MIRToolbox</af:computedIn> + <af:computedIn>Yaafe</af:computedIn> + <af:computedIn>jMIR</af:computedIn> + <af:computedIn>SuperCollider</af:computedIn> + <af:computedIn>comirva</af:computedIn> + <af:computedIn>Vamp</af:computedIn> + <af:computedIn>libXtract</af:computedIn> + <af:dimensions>parameterized</af:dimensions> + <af:abbreviation>MFCC</af:abbreviation> + <af:output>Dense</af:output> + <af:computation>Regression</af:computation> + <af:computation>Logarithm</af:computation> + <af:computation>Discrete Fourier Transform</af:computation> + <af:computation>Windowing</af:computation> + <af:computation>Discrete Cosine Transform</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/CrossCorrelation"> + <af:computedIn>Marsyas</af:computedIn> + <af:computedIn>sMIRk</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Computes the cross correlation of an input.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/BassChromagram"> + <af:feature>Bass Chromagram (NNLS Chroma)</af:feature> + <af:source>Matthias Mauch</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Smoothness"> + <af:computedIn>libXtract</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Median"> + <af:computedIn>Marsyas</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Median calculate the median of each row of observations</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MPEG7HarmonicSpectralCentroid"> + <af:temporalscale>intraframe</af:temporalscale> + <af:complexity>medium</af:complexity> + <af:feature>MPEG7HarmonicSpectralCentroid</af:feature> + <af:level>perceptual</af:level> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MPEG7HarmonicSpectralDeviation"/> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MPEG7HarmonicSpectralSpread"/> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/HarmonicSpectralCentroid"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>music information retrieval</af:appdomain> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>MPEG-7</af:computedIn> + <af:dimensions>1</af:dimensions> + <af:computation>Mean</af:computation> + <af:computation>Discrete Fourier Transform</af:computation> + <af:computation>Windowing</af:computation> + <af:computation>Zero-/Level Crossing Detector</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Feature"> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/TemporalStatisticalSpectrumDescriptor"> + <af:feature>Temporal Statistical Spectrum Descriptor</af:feature> + <af:author>T. Lidy</af:author> + <af:source>MIREX 2008</af:source> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/StatisticalSpectrumDescriptor"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>MIREX</af:computedIn> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AreaPolynomialApproximation"> + <af:name>2D Polynomial Approximation</af:name> + <af:computedIn>jMIR</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>coeffecients of 2D polynomial best describing the input matrtix.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/4HzModulationHarmonicCoefficients"> + <af:temporalscale>interframe</af:temporalscale> + <af:complexity>medium</af:complexity> + <af:feature>4HzModulationHarmonicCoefficients</af:feature> + <af:level>physical</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>audio segmentation</af:appdomain> + <af:domain>modulation frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:dimensions>1</af:dimensions> + <af:computation>Discrete Cosine Transform</af:computation> + <af:computation>Sum, Weighted Sum</af:computation> + <af:computation>Band-pass Filter (Bank)</af:computation> + <af:computation>Autocorrelation</af:computation> + <af:computation>Windowing</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Sone"> + <af:temporalscale>intraframe</af:temporalscale> + <af:complexity>high</af:complexity> + <af:feature>Sone</af:feature> + <af:model>psychoacoustic</af:model> + <af:level>perceptual</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>music information retrieval</af:appdomain> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:dimensions>parameterized</af:dimensions> + <af:computation>Regression</af:computation> + <af:computation>(Non-) Linear Weighting Function</af:computation> + <af:computation>Windowing</af:computation> + <af:computation>Discrete Fourier Transform</af:computation> + <af:computation>Logarithm</af:computation> + <af:computation>Low-pass Filter</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PeakerOnset"> + <af:computedIn>Marsyas</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Detects if input contains a onset point</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Loudness"> + <af:feature>Loudness</af:feature> + <dc:description>Extract the loudness of an audio signal from its spectrum</dc:description> + <dc:description>The loudness coefficients are the energy in each Bark band, normalized by the overall sum. see [GP2004]_ and [MG1997]_ for more details.</dc:description> + <dc:description>A perceptual loudness function which outputs loudness in sones; this is a variant of an MP3 perceptual model, summing excitation in ERB bands. It models simple spectral and temporal masking, with equal loudness contour correction in ERB bands to obtain phons (relative dB), then a phon to sone transform. The final output is typically in the range of 0 to 64 sones, though higher values can occur with specific synthesised stimuli.</dc:description> + <af:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:computedIn>Yaafe</af:computedIn> + <af:computedIn>SuperCollider</af:computedIn> + <af:computedIn>PsySound3</af:computedIn> + <af:computedIn>libXtract</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/GeometricMean"> + <af:computedIn>CLAM</af:computedIn> + <af:tag>Spectral</af:tag> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>the geometric mean for the spectral power values sequence</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/TonalCentroid"> + <af:computedIn>MIRToolbox</af:computedIn> + <af:tag>Tonality</af:tag> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Calculates the 6-dimensional tonal centroid vector from the chromagram</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/BandPeriodicity"> + <af:temporalscale>interframe</af:temporalscale> + <af:complexity>medium</af:complexity> + <af:feature>BandPeriodicity</af:feature> + <af:level>perceptual</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>audio segmentation</af:appdomain> + <af:domain>modulation frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:dimensions>4</af:dimensions> + <af:computation>Sum, Weighted Sum</af:computation> + <af:computation>Band-pass Filter (Bank)</af:computation> + <af:computation>Root Mean Square</af:computation> + <af:computation>Autocorrelation</af:computation> + <af:computation>Windowing</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/TonalChangePositions"> + <af:feature>Tonal Change Positions (Tonal Change)</af:feature> + <af:source>Queen Mary, University of London</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>time</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Sparse</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/HarmonicDerivate"> + <af:temporalscale>intraframe</af:temporalscale> + <af:complexity>medium</af:complexity> + <af:feature>HarmonicDerivate</af:feature> + <af:level>perceptual</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>music information retrieval</af:appdomain> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:dimensions>parameterized</af:dimensions> + <af:computation>Logarithm</af:computation> + <af:computation>Derivation, Difference</af:computation> + <af:computation>Discrete Fourier Transform</af:computation> + <af:computation>Windowing</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/TemporalRhythmHistogram"> + <af:feature>Temporal Rhythm Histogram</af:feature> + <af:author>T. Lidy</af:author> + <af:source>MIREX 2008</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>MIREX</af:computedIn> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Bars"> + <af:feature>Bars (Bar and Beat Tracker)</af:feature> + <af:source>Queen Mary, University of London</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>time</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Sparse</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Crest"> + <af:computedIn>SuperCollider</af:computedIn> + <af:computedIn>libXtract</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>measures the "crest factor" of a time-domain signal, i.e. the ratio of the absolute peak to the absolute mean over a certain time period</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Lnorm"> + <af:computedIn>libXtract</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Dct"> + <af:computedIn>libXtract</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Tristimulus1"> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/TristimulusIII"/> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Tristimulus3"/> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Tristimulus2"/> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/TristimulusI"/> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/TristimulusII"/> + <af:computedIn>libXtract</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/BeatSpectra"> + <af:feature>Beat Spectra (Similarity)</af:feature> + <af:source>Queen Mary, University of London</af:source> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/BeatSpectrum"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>time</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Sparse</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AimLocalMax"> + <af:computedIn>Marsyas</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Local maximum strobe criterion: decaying threshold with timeout</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/StrongestBeat"> + <af:name>Strongest Beat</af:name> + <af:computedIn>jMIR</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>The strongest beat in a signal, in beats per minute, found by finding the strongest bin in the beat histogram.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteCosineTransform"> + <af:feature>Discrete Cosine Transform</af:feature> + <dc:description>Extract the DCT of an audio signal</dc:description> + <af:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>time</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Inharmonicity"> + <af:temporalscale>intraframe</af:temporalscale> + <af:complexity>medium</af:complexity> + <af:feature>Inharmonicity</af:feature> + <dc:description>the amount of partials that are not multiples of the fundamental frequency, takes into account the amount of energy outside the ideal harmonic series</dc:description> + <dc:description>Extract the inharmonicity of an audio spectrum</dc:description> + <af:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</af:source> + <af:level>perceptual</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>music information retrieval</af:appdomain> + <af:domain>frequency</af:domain> + <af:tag>Pitch</af:tag> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:computedIn>MIRToolbox</af:computedIn> + <af:dimensions>1</af:dimensions> + <af:output>Dense</af:output> + <af:computation>Autocorrelation</af:computation> + <af:computation>Median</af:computation> + <af:computation>Windowing</af:computation> + <af:computation>Zero-/Level Crossing Detector</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SNR"> + <af:computedIn>Marsyas</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Compute SNR and variations</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IBTINESCBeatTracker"> + <af:feature>IBT - INESC Beat Tracker</af:feature> + <dc:description>Estimates beat locations and tempo (off-line [default] and on-line modes of operation)</dc:description> + <af:source>Marsyas Plugins</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Sparse</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/TriangularFilterBank"> + <af:computedIn>Marsyas</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Triangular FilterBankTakes as input the N/2+1 spectrum Magnitude points output by PowerSpectrum.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PhaseSpaceFeatures"> + <af:temporalscale>intraframe</af:temporalscale> + <af:complexity>high</af:complexity> + <af:feature>PhaseSpaceFeatures</af:feature> + <af:level>physical</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>speech recognition</af:appdomain> + <af:domain>phase space</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:dimensions>parameterized</af:dimensions> + <af:computation>Phase Space Embedding</af:computation> + <af:computation>Windowing</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PitchFastComb"> + <af:computedIn>aubio</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Pitch detection using a fast harmonic comb filter</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PitchSchmitt"> + <af:computedIn>aubio</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Pitch detection using a Schmitt trigger</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LogAttackTime"> + <af:computedIn>CLAM</af:computedIn> + <af:tag>Audio</af:tag> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>the base 10 logarithm of the rise time</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/StrongestFrequencyViaSpectralCentroid"> + <af:name>Strongest Frequency Via Spectral Centroid</af:name> + <af:computedIn>jMIR</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>The strongest frequency component of a signal, in Hz, found via the spectral centroid.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Standarddeviation"> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/StandardDeviation"/> + <af:computedIn>libXtract</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Decaytime"> + <af:computedIn>libXtract</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Averagedeviation"> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AverageDeviation"/> + <af:computedIn>libXtract</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Sum"> + <af:computedIn>libXtract</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IrregularityII"> + <af:feature>Irregularity II</af:feature> + <dc:description>Extract the irregularity (type II) of an audio spectrum</dc:description> + <af:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</af:source> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Irregularity"/> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Irregularityj"/> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IrregularityI"/> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Irregularityk"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DistanceMatrix"> + <af:feature>Distance Matrix (Similarity)</af:feature> + <af:source>Queen Mary, University of London</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>time</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FluctuationPatterns"> + <af:feature>Fluctuation Patterns</af:feature> + <af:author>Franz de Leon</af:author> + <af:source>MIREX</af:source> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FluctuationPatternCent"/> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FluctuationPattern"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>MIREX</af:computedIn> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PitchContours:Melody"> + <af:feature>Pitch Contours: Melody (MELODIA - Melody Extraction (intermediate steps))</af:feature> + <af:source>Music Technology Group, Universitat Pompeu Fabra</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>time</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/GeorgeTzanetakisModel"> + <af:feature>George Tzanetakis Model</af:feature> + <af:author>Klaus Seyerlehner</af:author> + <af:source>MIREX 2012</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>MIREX</af:computedIn> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/TristimulusI"> + <af:feature>Tristimulus I</af:feature> + <dc:description>Extract the tristimulus (type I) of an audio spectrum</dc:description> + <af:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</af:source> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/TristimulusIII"/> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Tristimulus3"/> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Tristimulus2"/> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Tristimulus1"/> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/TristimulusII"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PolyphonicTranscription"> + <af:feature>Polyphonic Transcription</af:feature> + <dc:description>Transcribe the input audio to estimated notes</dc:description> + <af:source>Queen Mary, University of London</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>time</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Sparse</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Noisiness"> + <af:feature>Noisiness</af:feature> + <dc:description>Extract the noisiness of an audio spectrum</dc:description> + <af:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:computedIn>libXtract</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AreaPolynomialApproximationConstantQMFCC"> + <dc:description>coeffecients of 2D polynomial best describing the input matrtix.</dc:description> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AreaPolynomialApproximationLogConstantQ"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:name>2D Polynomial Approximation ConstantQ MFCC</af:name> + <af:computedIn>jMIR</af:computedIn> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralSpread"> + <af:tag>Spectral</af:tag> + <af:feature>Spectral Spread</af:feature> + <dc:description>the variation of the spectrum around its mean value.</dc:description> + <dc:description>measures the spectral spread, which is the magnitude-weighted variance</dc:description> + <dc:description>The spectral spread is the variance of the spectral distribution around its centroid.</dc:description> + <dc:description>Extract the spectral spread of an audio spectrum</dc:description> + <af:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:computedIn>aubio</af:computedIn> + <af:computedIn>SuperCollider</af:computedIn> + <af:computedIn>CLAM</af:computedIn> + <af:computedIn>libXtract</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AverageSquaredDifferenceFunction"> + <af:feature>Average Squared Difference Function</af:feature> + <dc:description>Extract the ASDF of an audio signal</dc:description> + <af:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</af:source> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AverageMagnitudeDifferenceFunction"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>time</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/BeatHistogram"> + <af:temporalscale>interframe</af:temporalscale> + <af:complexity>medium</af:complexity> + <af:feature>BeatHistogram</af:feature> + <dc:description>A histogram showing the relative strength of different rhythmic periodicities (tempi) in a signal. Found by calculating the auto-correlation of the RMS.</dc:description> + <dc:description>BeatHistogram</dc:description> + <af:level>perceptual</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>music information retrieval</af:appdomain> + <af:domain>modulation frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:name>Beat Histogram</af:name> + <af:computedIn>jMIR</af:computedIn> + <af:computedIn>Marsyas</af:computedIn> + <af:dimensions>6</af:dimensions> + <af:computation>Autocorrelation</af:computation> + <af:computation>Root Mean Square</af:computation> + <af:computation>Windowing</af:computation> + <af:computation>Discrete Wavelet Transform</af:computation> + <af:computation>Low-pass Filter</af:computation> + <af:computation>Spectral binning</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MeansofCoefficients"> + <af:feature>Means of Coefficients (Mel-Frequency Cepstral Coefficients)</af:feature> + <af:source>Queen Mary, University of London</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DecorrelatedFilterBanks"> + <af:feature>Decorrelated Filter Banks</af:feature> + <af:author>Shin-Cheol Lim</af:author> + <af:source>MIREX</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>MIREX</af:computedIn> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Mean"> + <af:tag>Audio</af:tag> + <af:feature>Mean</af:feature> + <dc:description>Extract the mean of a range of values</dc:description> + <dc:description>Mean calculate the mean of each row of observations</dc:description> + <dc:description>the mean value of the absolute value of the audio samples amplitude</dc:description> + <af:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:computedIn>libXtract</af:computedIn> + <af:computedIn>CLAM</af:computedIn> + <af:computedIn>Marsyas</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/NoteRepresentationofChordEstimate"> + <af:feature>Note Representation of Chord Estimate (Chordino)</af:feature> + <af:source>Matthias Mauch</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Sparse</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralContrastPattern"> + <af:feature>Spectral Contrast Pattern</af:feature> + <af:author>Klaus Seyerlehner</af:author> + <af:source>MIREX 2012</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>MIREX</af:computedIn> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralFlatnessPerBand"> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralFlatnessAllBands"/> + <af:computedIn>Yaafe</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Compute spectral flatness per log-spaced band of 1/4 octave, as proposed in MPEG7 standard.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MelSpectrum"> + <af:computedIn>Yaafe</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Compute the Mel-frequencies spectrum [DM1980]_.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/KeyStrength"> + <af:computedIn>MIRToolbox</af:computedIn> + <af:tag>Tonality</af:tag> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>The probability distribution across possible keys</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MagnitudeKurtosis"> + <af:computedIn>CLAM</af:computedIn> + <af:tag>Spectral</af:tag> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Spectralmean"> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralMean"/> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralPeaks"/> + <af:computedIn>libXtract</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ChromaCENSFeatures"> + <af:temporalscale>intraframe</af:temporalscale> + <af:complexity>medium</af:complexity> + <af:feature>ChromaCENSFeatures</af:feature> + <af:level>perceptual</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>music information retrieval</af:appdomain> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:dimensions>12</af:dimensions> + <af:computation>Band-pass Filter Bank</af:computation> + <af:computation>Low-pass Filter</af:computation> + <af:computation>Root Mean Square</af:computation> + <af:computation>Windowing</af:computation> + <af:computation>Normalization</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PitchHistogram"> + <af:temporalscale>interframe</af:temporalscale> + <af:complexity>medium</af:complexity> + <af:feature>PitchHistogram</af:feature> + <af:level>perceptual</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>music information retrieval</af:appdomain> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:dimensions>parameterized</af:dimensions> + <af:computation>Autocorrelation</af:computation> + <af:computation>Root Mean Square</af:computation> + <af:computation>Spectral binning</af:computation> + <af:computation>Windowing</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AreaMomentsConstantQMFCC"> + <af:name>Area Method of Moments of ConstantQ-based MFCCs</af:name> + <af:computedIn>jMIR</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>2D statistical method of moments of ConstantQ-based MFCCs</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AimPZFC2"> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AimPZFC"/> + <af:computedIn>Marsyas</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Time-domain AimPZFC2</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LinearPredictiveCoding"> + <af:temporalscale>intraframe</af:temporalscale> + <af:complexity>low</af:complexity> + <af:feature>LinearPredictiveCoding</af:feature> + <dc:description>Linear Prediction Coeffecients calculated using autocorrelation and Levinson-Durbin recursion.</dc:description> + <dc:description>Compute Warped LPC coefficients, Pitch and Power [STILL UNDER TESTING!].</dc:description> + <dc:description>Compute the Linear Predictor Coefficients (LPC) of a signal frame. It uses autocorrelation and Levinson-Durbin algorithm. see [JM1975]_.</dc:description> + <af:level>physical</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>speech recognition</af:appdomain> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:name>LPC</af:name> + <af:computedIn>Yaafe</af:computedIn> + <af:computedIn>jMIR</af:computedIn> + <af:computedIn>libXtract</af:computedIn> + <af:computedIn>sMIRk</af:computedIn> + <af:computedIn>Marsyas</af:computedIn> + <af:dimensions>parameterized</af:dimensions> + <af:abbreviation>LPC</af:abbreviation> + <af:computation>Band-pass Filter (Bank)</af:computation> + <af:computation>Discrete Fourier Transform</af:computation> + <af:computation>Autoregression (Linear Prediction Analysis)</af:computation> + <af:computation>Windowing</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MaxArgMax"> + <af:computedIn>Marsyas</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Calculate k maximums and their positions</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Tempo"> + <af:tag>Rhythm</af:tag> + <af:feature>Tempo (Tempo and Beat Tracker)</af:feature> + <af:feature>Tempo (Aubio Beat Tracker)</af:feature> + <dc:description>Tempo detection driver. This object stores all the memory required for tempo detection algorithm and returns the estimated beat locations.</dc:description> + <dc:description>derived from calculated onsets with ACF, spectrum or both</dc:description> + <af:source>Queen Mary, University of London</af:source> + <af:source>Paul Brossier (method by Matthew Davies, plugin by Chris Cannam)</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>time</af:domain> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:computedIn>aubio</af:computedIn> + <af:computedIn>MIRToolbox</af:computedIn> + <af:output>Sparse</af:output> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Daub4"> + <af:computedIn>Marsyas</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Daubechies4 WaveletStep</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MeddisHairCell"> + <af:computedIn>Marsyas</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>MeddisHairCell for auditory models</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/evenHarmonicRatio"> + <af:feature>Odd/even Harmonic Ratio</af:feature> + <dc:description>Extract the odd-to-even harmonic ratio of an audio spectrum</dc:description> + <af:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Spectrum"> + <af:feature>Spectrum</af:feature> + <dc:description>Compute the complex spectrum of input window</dc:description> + <dc:description>Extract the spectrum of an audio signal</dc:description> + <af:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>time</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:computedIn>Marsyas</af:computedIn> + <af:computedIn>libXtract</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralShapeDescriptors"> + <af:computedIn>aubio</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Spectral shape descriptors</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LocalSingleGaussianModel"> + <af:feature>Local Single Gaussian Model</af:feature> + <af:author>Klaus Seyerlehner</af:author> + <af:source>MIREX 2012</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>MIREX</af:computedIn> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PrincipalMelSpectrumComponents"> + <af:feature>Principal Mel-spectrum Components</af:feature> + <af:author>Philippe Hamel</af:author> + <af:source>MIREX</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>MIREX</af:computedIn> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Peaker"> + <af:computedIn>Marsyas</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Pick peaks out of signal</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AubioOnsetDetector"> + <af:feature>Aubio Onset Detector</af:feature> + <dc:description>Estimate note onset times</dc:description> + <af:source>Paul Brossier (plugin by Chris Cannam)</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>time</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Sparse</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/BeatHistogramLabels"> + <af:name>Beat Histogram Bin Labels</af:name> + <af:computedIn>jMIR</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>The bin label, in beats per minute, of each beat histogram bin. Not useful as a feature in itself, but useful for calculating other features from the beat histogram.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Decrease"> + <af:computedIn>CLAM</af:computedIn> + <af:tag>Audio</af:tag> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>a measure of the amount of decrease in the signal energy</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/CorrelationPattern"> + <af:feature>Correlation Pattern</af:feature> + <af:author>Klaus Seyerlehner</af:author> + <af:source>MIREX 2012</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>MIREX</af:computedIn> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Variance"> + <af:tag>Audio</af:tag> + <af:feature>Variance</af:feature> + <dc:description>the variance of audio samples amplitude</dc:description> + <dc:description>Extract the variance of a range of values</dc:description> + <af:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:computedIn>libXtract</af:computedIn> + <af:computedIn>CLAM</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LineSpectralPairs"> + <af:feature>Marsyas - Batch Feature Extract - Line Spectral Pairs</af:feature> + <dc:description>Marsyas - Batch Feature Extract - Line Spectral Pairs</dc:description> + <af:source>Marsyas Plugins</af:source> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LinearSpectralPairs"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>time</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AubioSilenceDetector"> + <af:feature>Aubio Silence Detector</af:feature> + <dc:description>Detect levels below a certain threshold</dc:description> + <af:source>Paul Brossier (plugin by Chris Cannam)</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>time</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AimVQ"> + <af:computedIn>Marsyas</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Vector quantization for dense to sparse features</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Irregularityk"> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Irregularityj"/> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Irregularity"/> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IrregularityII"/> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IrregularityI"/> + <af:computedIn>libXtract</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/RhythmPatterns"> + <af:temporalscale>interframe</af:temporalscale> + <af:complexity>high</af:complexity> + <af:feature>RhythmPatterns</af:feature> + <af:model>psychoacoustic</af:model> + <af:level>physical</af:level> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/RhythmPattern"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>music information retrieval</af:appdomain> + <af:domain>modulation frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:dimensions>80</af:dimensions> + <af:computation>Regression</af:computation> + <af:computation>(Non-) Linear Weighting 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<af:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>time</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/StatisticalIntegrator"> + <af:computedIn>Yaafe</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Feature transform that compute the temporal mean and variance of input feature over the given number of frames.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Spectralstandarddeviation"> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralStandardDeviation"/> + <af:computedIn>libXtract</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/TimbreDistribution"> + <af:computedIn>comirva</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/NoteOnset"> + <af:tag>Rhythm</af:tag> + <dc:description>note onset times</dc:description> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/NoteOnsets"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>MIRToolbox</af:computedIn> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AmplitudeDescriptor"> + <af:temporalscale>intraframe</af:temporalscale> + <af:complexity>low</af:complexity> + <af:feature>AmplitudeDescriptor</af:feature> + <af:level>physical</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>environmental sound recognition</af:appdomain> + <af:domain>temporal</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:dimensions>9</af:dimensions> + <af:computation>Windowing</af:computation> + <af:computation>Mean</af:computation> + <af:computation>Spectral binning</af:computation> + <af:computation>Median</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Tuning"> + <af:feature>Tuning</af:feature> + <dc:description>The tuning plugin can estimate the local and global tuning of piece. The same tuning method is used for the NNLS Chroma and Chordino plugins.</dc:description> + <af:source>Matthias Mauch</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralDifferenceMethodOnsetDetectionFunction"> + <af:computedIn>aubio</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Spectral difference method onset detection function.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SilentRegions"> + <af:feature>Silent Regions (Aubio Silence Detector)</af:feature> + <af:source>Paul Brossier (plugin by Chris Cannam)</af:source> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/NonSilentRegions"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>time</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Sparse</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AimBoxes"> + <af:computedIn>Marsyas</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>'Box-cutting' routine to generate dense features</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AdaptiveTimeFrequencyTransform"> + <af:temporalscale>global</af:temporalscale> + <af:complexity>medium</af:complexity> + <af:feature>AdaptiveTimeFrequencyTransform</af:feature> + <af:level>physical</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>music information retrieval</af:appdomain> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:dimensions>42</af:dimensions> + <af:computation>Adaptive Time Frequency Transform</af:computation> + <af:computation>Spectral binning</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MPEG7AudioSpectrumCentroid"> + <af:temporalscale>intraframe</af:temporalscale> + <af:complexity>medium</af:complexity> + <af:feature>MPEG7AudioSpectrumCentroid</af:feature> + <af:model>psychoacoustic</af:model> + <af:level>perceptual</af:level> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MPEG7AudioSpectrumSpread"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>several</af:appdomain> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>MPEG-7</af:computedIn> + <af:dimensions>1</af:dimensions> + <af:computation>Regression</af:computation> + <af:computation>Logarithm</af:computation> + <af:computation>Mean</af:computation> + <af:computation>Discrete Fourier Transform</af:computation> + <af:computation>Windowing</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Tristimulus2"> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/TristimulusIII"/> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Tristimulus3"/> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/TristimulusI"/> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Tristimulus1"/> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/TristimulusII"/> + <af:computedIn>libXtract</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/TemporalCentroid"> + <af:computedIn>CLAM</af:computedIn> + <af:tag>Audio</af:tag> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>time where signal energy is "concentrated"</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/CyclicBeatSpectrum"> + <af:temporalscale>interframe</af:temporalscale> + <af:complexity>high</af:complexity> + <af:feature>CyclicBeatSpectrum</af:feature> + <af:level>perceptual</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>music information retrieval</af:appdomain> + <af:domain>modulation frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:dimensions>parameterized</af:dimensions> + <af:computation>Derivation, Difference</af:computation> + <af:computation>Comb Filter (Bank)</af:computation> + <af:computation>Root Mean Square</af:computation> + <af:computation>Windowing</af:computation> + <af:computation>Discrete Fourier Transform</af:computation> + <af:computation>Low-pass Filter</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/KeyStrengthPlot"> + <af:feature>Key Strength Plot (Key Detector)</af:feature> + <af:source>Queen Mary, University of London</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>time</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralVariance"> + <af:feature>Spectral Variance</af:feature> + <dc:description>Extract the variance of an audio spectrum</dc:description> + <af:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</af:source> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralVariation"/> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Spectralvariance"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/HarmonicSpectralSmoothness"> + <af:name>Peak Based Spectral Smoothness</af:name> + <af:computedIn>jMIR</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Peak Based Spectral Smoothness is calculated from partials, not frequency bins. It is implemented accortding to McAdams 99 System.getProperty(line.separator) System.getProperty(line.separator) McAdams, S. 1999.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SalienceFunction"> + <af:feature>Salience Function (MELODIA - Melody Extraction (intermediate steps))</af:feature> + <af:source>Music Technology Group, Universitat Pompeu Fabra</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>time</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/BeatHistogramFromPeaks"> + <af:computedIn>Marsyas</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>BeatHistogramFromPeaks</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Transformto6DTonalContentSpace"> + <af:feature>Transform to 6D Tonal Content Space (Tonal Change)</af:feature> + <af:source>Queen Mary, University of London</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>time</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DWPTbasedRhythmFeature"> + <af:temporalscale>interframe</af:temporalscale> + <af:complexity>medium</af:complexity> + <af:feature>DWPTbasedRhythmFeature</af:feature> + <af:level>perceptual</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>music information retrieval</af:appdomain> + <af:domain>modulation frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:dimensions>parameterized</af:dimensions> + <af:computation>Windowing</af:computation> + <af:computation>Autocorrelation</af:computation> + <af:computation>Root Mean Square</af:computation> + <af:computation>Spectral binning</af:computation> + <af:computation>Discrete Wavelet Transform</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Chromagram"> + <af:temporalscale>intraframe</af:temporalscale> + <af:complexity>medium</af:complexity> + <af:feature>Chromagram</af:feature> + <af:feature>Chromagram (NNLS Chroma)</af:feature> + <dc:description>shows the distribution of energy along the pitches or pitch classes</dc:description> + <dc:description>measures the energy at particular chroma within an nTET tuning system</dc:description> + <dc:description>Extract a series of tonal chroma vectors from the audio</dc:description> + <af:source>Matthias Mauch</af:source> + <af:source>Queen Mary, University of London</af:source> + <af:level>perceptual</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>music information retrieval</af:appdomain> + <af:domain>frequency</af:domain> + <af:tag>Tonality</af:tag> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:computedIn>SuperCollider</af:computedIn> + <af:computedIn>MIRToolbox</af:computedIn> + <af:dimensions>12</af:dimensions> + <af:output>Dense</af:output> + <af:computation>Logarithm</af:computation> + <af:computation>Root Mean Square</af:computation> + <af:computation>Discrete Fourier Transform</af:computation> + <af:computation>Windowing</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/BeatSpectrum"> + <af:temporalscale>interframe</af:temporalscale> + <af:complexity>high</af:complexity> + <af:feature>BeatSpectrum</af:feature> + <dc:description>a measure of acoustic self-similarity as a function of time lag, computed from the similarity matrix</dc:description> + <af:level>perceptual</af:level> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PeakSpectrum"/> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/BeatSpectra"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>music information retrieval</af:appdomain> + <af:domain>modulation frequency</af:domain> + <af:tag>Rhythm</af:tag> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>MIRToolbox</af:computedIn> + <af:dimensions>parameterized</af:dimensions> + <af:computation>Autocorrelation</af:computation> + <af:computation>Cross-Correlation</af:computation> + <af:computation>Windowing</af:computation> + <af:computation>Discrete Fourier Transform</af:computation> + <af:computation>Logarithm</af:computation> + <af:computation>Low-pass Filter</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Volume"> + <af:temporalscale>intraframe</af:temporalscale> + <af:complexity>low</af:complexity> + <af:feature>Volume</af:feature> + <af:level>physical</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>several</af:appdomain> + <af:domain>temporal</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:dimensions>1</af:dimensions> + <af:computation>Power</af:computation> + <af:computation>Windowing</af:computation> + </rdf:Description> + <rdf:Description 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Found by comparing the components of a window's magnitude spectrum with the magnitude spectrum of its neighbouring windows.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Bandwidth"> + <af:temporalscale>intraframe</af:temporalscale> + <af:complexity>low</af:complexity> + <af:feature>Bandwidth</af:feature> + <af:level>perceptual</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>several</af:appdomain> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:dimensions>1</af:dimensions> + <af:computation>Regression</af:computation> + <af:computation>Logarithm</af:computation> + <af:computation>Discrete Fourier Transform</af:computation> + <af:computation>Windowing</af:computation> + <af:computation>Median</af:computation> + </rdf:Description> + 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</rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MPEG7AudioWaveform"> + <af:temporalscale>intraframe</af:temporalscale> + <af:complexity>low</af:complexity> + <af:feature>MPEG7AudioWaveform</af:feature> + <af:level>physical</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>temporal</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>MPEG-7</af:computedIn> + <af:dimensions>2</af:dimensions> + <af:computation>Sum, Weighted Sum</af:computation> + <af:computation>Windowing</af:computation> + <af:computation>Histogram</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralPattern"> + <af:feature>Spectral Pattern</af:feature> + <af:author>Klaus Seyerlehner</af:author> + <af:source>MIREX</af:source> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralPatternCent"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>MIREX</af:computedIn> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Pitch"> + <af:temporalscale>intraframe</af:temporalscale> + <af:complexity>low</af:complexity> + <af:feature>Pitch</af:feature> + <dc:description>Generic method for pitch detection</dc:description> + <dc:description>Pitch estimated via ACF, autocorrelation spectrum or cepstrum, or a combination</dc:description> + <af:level>perceptual</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>several</af:appdomain> + <af:domain>frequency</af:domain> + <af:tag>Pitch</af:tag> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>aubio</af:computedIn> + <af:computedIn>SuperCollider</af:computedIn> + <af:computedIn>MIRToolbox</af:computedIn> + <af:dimensions>1</af:dimensions> + <af:computation>Sum, Weighted Sum</af:computation> + <af:computation>Autocorrelation</af:computation> + <af:computation>Windowing</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Failsafef0"> + <af:computedIn>libXtract</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AttackLeap"> + <af:computedIn>MIRToolbox</af:computedIn> + <af:tag>Timbre</af:tag> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>estimates the amplitude difference between the beginning and the end of the attack phase</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/HarmonicProminence"> + <af:temporalscale>intraframe</af:temporalscale> + <af:complexity>medium</af:complexity> + <af:feature>HarmonicProminence</af:feature> + <af:level>perceptual</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>environmental sound recognition</af:appdomain> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:dimensions>1</af:dimensions> + <af:computation>Autocorrelation</af:computation> + <af:computation>Windowing</af:computation> + <af:computation>Zero-/Level Crossing Detector</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SmoothedDetectionFunction"> + <af:feature>Smoothed Detection Function (Note Onset Detector)</af:feature> + <af:source>Queen Mary, University of London</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Sparse</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/OrderedDistancesfromFirstChannel"> + <af:feature>Ordered Distances from First Channel (Similarity)</af:feature> + <af:source>Queen Mary, University of London</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>time</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LogConstantQ"> + <af:name>Log of ConstantQ</af:name> + <af:computedIn>jMIR</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>logarithm of each bin of exponentially-spaced frequency bins.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/JointAcousticandModuluationFrequency"> + <af:temporalscale>interframe</af:temporalscale> + <af:complexity>high</af:complexity> + <af:feature>JointAcousticandModuluationFrequency</af:feature> + <af:model>psychoacoustic</af:model> + <af:level>physical</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>several</af:appdomain> + <af:domain>modulation frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:dimensions>parameterized</af:dimensions> + <af:computation>Regression</af:computation> + <af:computation>Root Mean Square</af:computation> + <af:computation>Discrete Wavelet Transform</af:computation> + <af:computation>Windowing</af:computation> + <af:computation>Discrete Fourier Transform</af:computation> + <af:computation>Low-pass Filter</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ModulationFrequencyVarianceDescriptor"> + <af:feature>Modulation Frequency Variance Descriptor</af:feature> + <af:author>Ponce</af:author> + <af:author>T. Lidy</af:author> + <af:source>MIREX 2008</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>MIREX</af:computedIn> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FeatureMeans"> + <af:feature>Feature Means (Similarity)</af:feature> + <af:source>Queen Mary, University of London</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>time</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IrregularityI"> + <af:feature>Irregularity I</af:feature> + <dc:description>Extract the irregularity (type I) of an audio spectrum</dc:description> + <af:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</af:source> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Irregularityj"/> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Irregularity"/> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IrregularityII"/> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Irregularityk"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/RMSEnergy"> + <af:computedIn>MIRToolbox</af:computedIn> + <af:tag>Dynamics</af:tag> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>root mean square energy</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/EventDensity"> + <af:computedIn>MIRToolbox</af:computedIn> + <af:tag>Rhythm</af:tag> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>estimates the average frequency of events, i.e., the number of note onsets per second</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralRolloff"> + <af:temporalscale>intraframe</af:temporalscale> + <af:complexity>low</af:complexity> + <af:feature>Spectral Rolloff</af:feature> + <af:feature>Marsyas - Batch Feature Extract - Spectral Rolloff</af:feature> + <af:feature>SpectralRolloff</af:feature> + <dc:description>This function returns the bin number below which 95% of the spectrum energy is found.</dc:description> + <dc:description>The frequency below which 85% of the energy is contained. The percentage may be user-chosen</dc:description> + <dc:description>The fraction of bins in the power spectrum at which 85% // System.getProperty(line.separator) of the power is at lower frequencies. This is a measure // System.getProperty(line.separator) // of the right-skewedness of the power spectrum.</dc:description> + <dc:description>Marsyas - Batch Feature Extract - Spectral Rolloff</dc:description> + <dc:description>The spectral roll-off point is the frequency value so that the 85% of the spectral energy is contained below it</dc:description> + <dc:description>Rolloff of each time slice of observations</dc:description> + <dc:description>Spectral roll-off is the frequency so that 99% of the energy is contained below. see [SS1997]_.</dc:description> + <dc:description>Extract the rolloff point of an audio spectrum</dc:description> + <af:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</af:source> + <af:source>Marsyas Plugins</af:source> + <af:level>perceptual</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>several</af:appdomain> + <af:domain>time</af:domain> + <af:domain>frequency</af:domain> + <af:tag>Spectral</af:tag> + <af:tag>Timbre</af:tag> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:name>Spectral Rolloff Point</af:name> + <af:computedIn>aubio</af:computedIn> + <af:computedIn>CLAM</af:computedIn> + <af:computedIn>Marsyas</af:computedIn> + <af:computedIn>MIRToolbox</af:computedIn> + <af:computedIn>Yaafe</af:computedIn> + <af:computedIn>jMIR</af:computedIn> + <af:computedIn>Vamp</af:computedIn> + <af:computedIn>libXtract</af:computedIn> + <af:computedIn>sMIRk</af:computedIn> + <af:dimensions>1</af:dimensions> + <af:output>Dense</af:output> + <af:computation>Polynomial Root Finding</af:computation> + <af:computation>Discrete Fourier Transform</af:computation> + <af:computation>Windowing</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Envelope"> + <af:computedIn>Yaafe</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Extract amplitude envelope using hilbert transform, low-pass filtering and decimation.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/EnergyBasedOnsetDetectionFunction"> + <af:computedIn>aubio</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>This function calculates the local energy of the input spectral frame.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Tristimulus3"> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/TristimulusIII"/> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Tristimulus2"/> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/TristimulusI"/> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Tristimulus1"/> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/TristimulusII"/> + <af:computedIn>libXtract</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PerceptualSharpness"> + <af:computedIn>Yaafe</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Compute the sharpness of :class:Loudness coefficients, according to [GP2004]_.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AimHCL2"> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AimHCL"/> + <af:computedIn>Marsyas</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Halfwave rectification, compression and lowpass filtering</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Similarity"> + <af:feature>Similarity</af:feature> + <dc:description>Return a distance matrix for similarity between the input audio channels</dc:description> + <af:source>Queen Mary, University of London</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>time</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ADRess"> + <af:computedIn>Marsyas</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Azimuth Discrimination and Resynthesis (ADRess) implementation,which takes a stereo input (i.e. input is expected to be the output of a</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/TonalChange"> + <af:feature>Tonal Change</af:feature> + <dc:description>Detect and return the positions of harmonic changes such as chord boundaries</dc:description> + <af:source>Queen Mary, University of London</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>time</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Frames"> + <af:computedIn>Yaafe</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Segment input signal into frames.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PeakSpectrum"> + <af:feature>Peak Spectrum</af:feature> + <dc:description>Extract the spectral peaks from an audio spectrum</dc:description> + <af:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</af:source> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/BeatSpectrum"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:computedIn>libXtract</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/RMSAmplitude"> + <af:feature>RMS Amplitude</af:feature> + <dc:description>Extract the RMS amplitude of an audio signal</dc:description> + <af:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>time</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AubioPitchDetector"> + <af:feature>Aubio Pitch Detector</af:feature> + <dc:description>Track estimated note pitches</dc:description> + <af:source>Paul Brossier (plugin by Chris Cannam)</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>time</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Sparse</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PowerToAverageRatio"> + <af:computedIn>Marsyas</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>PowerToAverageRatio (or Power-to-Average Ratio) of a window</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/4HzModulationEnergy"> + <af:temporalscale>interframe</af:temporalscale> + <af:complexity>medium</af:complexity> + <af:feature>4HzModulationEnergy</af:feature> + <af:model>psychoacoustic</af:model> + <af:level>physical</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>audio segmentation</af:appdomain> + <af:domain>modulation frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:dimensions>1</af:dimensions> + <af:computation>Regression</af:computation> + <af:computation>Band-pass Filter (Bank)</af:computation> + <af:computation>Root Mean Square</af:computation> + <af:computation>Windowing</af:computation> + <af:computation>Normalization</af:computation> + <af:computation>Energy Spectral Density</af:computation> + <af:computation>Discrete Fourier Transform</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Spectralvariance"> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralVariance"/> + <af:computedIn>libXtract</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/RhythmPattern"> + <af:feature>Rhythm Pattern</af:feature> + <af:author>T. Lidy</af:author> + <af:source>MIREX 2008</af:source> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/RhythmPatterns"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>MIREX</af:computedIn> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/RelativeSpectralPLP"> + <af:temporalscale>intraframe</af:temporalscale> + <af:complexity>high</af:complexity> + <af:feature>RelativeSpectralPLP</af:feature> + <af:model>psychoacoustic</af:model> + <af:level>physical</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>speech recognition</af:appdomain> + <af:domain>cepstral</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:dimensions>parameterized</af:dimensions> + <af:computation>Regression</af:computation> + <af:computation>Exponential Function</af:computation> + <af:computation>(Non-) Linear Weighting Function</af:computation> + <af:computation>Cepstral Recursion Formula</af:computation> + <af:computation>Band-pass Filter (Bank)</af:computation> + <af:computation>Windowing</af:computation> + <af:computation>Discrete Fourier Transform</af:computation> + <af:computation>Discrete Cosine Transform</af:computation> + <af:computation>Logarithm</af:computation> + <af:computation>Autoregression (Linear Prediction Analysis)</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/StereoSpectrum"> + <af:computedIn>Marsyas</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>StereoSpectrum computes the panning index for each spectrumbin of a stereo input (i.e. input is expected to be the output of a</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Barkcoefficients"> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/BarkCoefficients"/> + <af:computedIn>libXtract</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/RhythmicFluctuation"> + <af:computedIn>MIRToolbox</af:computedIn> + <af:tag>Rhythm</af:tag> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Rhythmic periodicity along auditory channels</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/BeatTracker"> + <af:temporalscale>interframe</af:temporalscale> + <af:complexity>high</af:complexity> + <af:feature>BeatTracker</af:feature> + <af:level>perceptual</af:level> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/BeatTrack2"/> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/BeatTrack"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>music information retrieval</af:appdomain> + <af:domain>modulation frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:dimensions>1</af:dimensions> + <af:computation>Derivation, Difference</af:computation> + <af:computation>Comb Filter (Bank)</af:computation> + <af:computation>Band-pass Filter (Bank)</af:computation> + <af:computation>Root Mean Square</af:computation> + <af:computation>Windowing</af:computation> + <af:computation>Low-pass Filter</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ModifiedGroupDelay"> + <af:temporalscale>intraframe</af:temporalscale> + <af:complexity>medium</af:complexity> + <af:feature>ModifiedGroupDelay</af:feature> + <af:level>physical</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>speech recognition</af:appdomain> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:dimensions>parameterized</af:dimensions> + <af:computation>Discrete Cosine Transform</af:computation> + <af:computation>Group Delay Function</af:computation> + <af:computation>Low-pass Filter</af:computation> + <af:computation>Discrete Fourier Transform</af:computation> + <af:computation>Windowing</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Derivate"> + <af:computedIn>Yaafe</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Compute temporal derivative of input feature. The derivative is approximated by</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FundamentalFrequency(failsafe)"> + <af:feature>Fundamental Frequency (failsafe)</af:feature> + <dc:description>Extract the fundamental frequency of an audio signal (failsafe)</dc:description> + <af:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>time</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SilenceTest"> + <af:feature>Silence Test (Aubio Silence Detector)</af:feature> + <af:source>Paul Brossier (plugin by Chris Cannam)</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>time</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Sparse</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LogLikelihoodofChordEstimate"> + <af:feature>Log-Likelihood of Chord Estimate (Chordino)</af:feature> + <af:source>Matthias Mauch</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralSharpness"> + <af:feature>Spectral Sharpness</af:feature> + <dc:description>Extract the spectral sharpness of an audio spectrum</dc:description> + <af:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</af:source> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralSkewness"/> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralFlatness"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/NoteOnsetDetector"> + <af:feature>Note Onset Detector</af:feature> + <dc:description>Estimate individual note onset positions</dc:description> + <af:source>Queen Mary, University of London</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/EnhADRessStereoSpectrum"> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ADRessStereoSpectrum"/> + <af:computedIn>Marsyas</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Takes the output of the enhADRessand outputs the panning coefficient for each spectral bin (N/2+1 bins).</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/HarmonicConcentration"> + <af:temporalscale>intraframe</af:temporalscale> + <af:complexity>medium</af:complexity> + <af:feature>HarmonicConcentration</af:feature> + <af:level>perceptual</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>music information retrieval</af:appdomain> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:dimensions>1</af:dimensions> + <af:computation>Energy Spectral Density</af:computation> + <af:computation>Discrete Fourier Transform</af:computation> + <af:computation>Windowing</af:computation> + <af:computation>Root Mean Square</af:computation> + <af:computation>Zero-/Level Crossing Detector</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/OctaveBandSignalIntensity"> + <af:computedIn>Yaafe</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Compute Octave band signal intensity using a trigular octave filter bank ([SE2005]_).</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PulseClarity"> + <af:computedIn>MIRToolbox</af:computedIn> + <af:tag>Rhythm</af:tag> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>estimates the rhythmic clarity, indicating the strength of the beats estimated by the tempo function</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Spectralinharmonicity"> + <af:computedIn>libXtract</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/TristimulusII"> + <af:feature>Tristimulus II</af:feature> + <dc:description>Extract the tristimulus (type II) of an audio spectrum</dc:description> + <af:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</af:source> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/TristimulusIII"/> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Tristimulus2"/> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Tristimulus3"/> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/TristimulusI"/> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Tristimulus1"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/StereoSpectrumFeatures"> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/StereoSpectrumSources"/> + <af:computedIn>Marsyas</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>StereoSpectrumFeatures capture panning information</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Sharpness"> + <af:temporalscale>intraframe</af:temporalscale> + <af:complexity>medium</af:complexity> + <af:feature>Sharpness</af:feature> + <af:model>psychoacoustic</af:model> + <af:level>perceptual</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>several</af:appdomain> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>PsySound3</af:computedIn> + <af:computedIn>libXtract</af:computedIn> + <af:dimensions>1</af:dimensions> + <af:computation>Regression</af:computation> + <af:computation>Mean</af:computation> + <af:computation>(Non-) Linear Weighting Function</af:computation> + <af:computation>Discrete Fourier Transform</af:computation> + <af:computation>Windowing</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/BarkCoefficients"> + <af:feature>Bark Coefficients</af:feature> + <dc:description>Extract bark coefficients from an audio spectrum</dc:description> + <af:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</af:source> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Barkcoefficients"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralCrestFactor"> + <af:feature>Marsyas - Batch Feature Extract - Spectral Crest Factor</af:feature> + <dc:description>Marsyas - Batch Feature Extract - Spectral Crest Factor</dc:description> + <af:source>Marsyas Plugins</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>time</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AttackSlope"> + <af:computedIn>MIRToolbox</af:computedIn> + <af:tag>Timbre</af:tag> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>average slope of attack phase, computed either as a simple ratio, or a Gaussian-weighted average to emphasise the middle of the attack</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralCrest"> + <af:temporalscale>intraframe</af:temporalscale> + <af:complexity>low</af:complexity> + <af:feature>SpectralCrest</af:feature> + <af:feature>Spectral Crest Measure</af:feature> + <dc:description>Extract the spectral crest measure of an audio spectrum</dc:description> + <dc:description>produces the spectral crest measure, which is an indicator of the "peakiness" of the spectral energy distribution</dc:description> + <af:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</af:source> + <af:level>perceptual</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>fingerprinting</af:appdomain> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:computedIn>SuperCollider</af:computedIn> + <af:dimensions>parameterized</af:dimensions> + <af:output>Dense</af:output> + <af:computation>Regression</af:computation> + <af:computation>Mean</af:computation> + <af:computation>Windowing</af:computation> + <af:computation>Discrete Fourier Transform</af:computation> + <af:computation>Logarithm</af:computation> + <af:computation>Sum, Weighted Sum</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MELODIAMelodyExtraction"> + <af:feature>MELODIA - Melody Extraction</af:feature> + <dc:description>Estimates the melody pitch in polyphonic music (also good for homophonic and monophonic music). Segments without melody are indicated by zero or negative values. For further details please read: J. Salamon and E. Gomez, "Melody Extraction from Polyphonic Music Signals using Pitch Contour Characteristics", IEEE Transactions on Audio, Speech and Language Processing, 20(6):1759-1770, 2012. We would highly appreciate the above reference being cited in publications of work in which this plug-in was used.</dc:description> + <af:source>Music Technology Group, Universitat Pompeu Fabra</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>time</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ComplexDomainOnsetDetection"> + <af:computedIn>Yaafe</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Compute onset detection using a complex domain spectral flux method [CD2003]_.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/BarkscaleFrequencyCepstralCoefficients"> + <af:temporalscale>intraframe</af:temporalscale> + <af:complexity>high</af:complexity> + <af:feature>BarkscaleFrequencyCepstralCoefficients</af:feature> + <af:model>psychoacoustic</af:model> + <af:level>physical</af:level> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MelscaleFrequencyCepstralCoefficients"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>several</af:appdomain> + <af:domain>cepstral</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:dimensions>parameterized</af:dimensions> + <af:computation>Regression</af:computation> + <af:computation>Logarithm</af:computation> + <af:computation>Discrete Fourier Transform</af:computation> + <af:computation>Windowing</af:computation> + <af:computation>Discrete Cosine Transform</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Hps"> + <af:computedIn>libXtract</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PsychoacousticalPitch"> + <af:temporalscale>intraframe</af:temporalscale> + <af:complexity>high</af:complexity> + <af:feature>PsychoacousticalPitch</af:feature> + <af:model>psychoacoustic</af:model> + <af:level>perceptual</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>several</af:appdomain> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:dimensions>parameterized</af:dimensions> + <af:computation>Band-pass Filter (Bank)</af:computation> + <af:computation>Root Mean Square</af:computation> + <af:computation>Autocorrelation</af:computation> + <af:computation>(Non-) Linear Weighting Function</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MagnitudeSkewness"> + <af:computedIn>CLAM</af:computedIn> + <af:tag>Spectral</af:tag> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/HarmonicSpectralCentroid"> + <dc:description>Spectral Centroid calculated based on the center of mass of partials instead of center of mass of bins.</dc:description> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MPEG7HarmonicSpectralCentroid"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:name>Partial Based Spectral Centroid</af:name> + <af:computedIn>jMIR</af:computedIn> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FractionOfLowEnergyWindows"> + <af:name>Fraction Of Low Energy Windows</af:name> + <af:computedIn>jMIR</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>The fraction of the last 100 windows that has an RMS less than the mean RMS in the last 100 windows. This can indicate how much of a signal is quiet relative to the rest of the signal.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Asdf"> + <af:computedIn>libXtract</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralMean"> + <af:tag>Spectral</af:tag> + <dc:description>the spectral power mean value.</dc:description> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Spectralmean"/> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralPeaks"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>CLAM</af:computedIn> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PowerSpectrum"> + <af:name>Power Spectrum</af:name> + <af:computedIn>jMIR</af:computedIn> + <af:computedIn>Marsyas</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>A measure of the power of different frequency components.</dc:description> + <dc:description>PowerSpectrum computes the magnitude/power of the complex spectrum</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MaxMagFreq"> + <af:computedIn>CLAM</af:computedIn> + <af:tag>Spectral</af:tag> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>frequency of the maximum magnitude of the spectrum</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/NonSilentRegions"> + <af:feature>Non-Silent Regions (Aubio Silence Detector)</af:feature> + <af:source>Paul Brossier (plugin by Chris Cannam)</af:source> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SilentRegions"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>time</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Sparse</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/HighestValue"> + <af:feature>Highest Value</af:feature> + <dc:description>Extract the highest value from a given range</dc:description> + <af:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</af:source> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Highestvalue"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/StrongestFrequencyViaFFTMax"> + <af:name>Strongest Frequency Via FFT Maximum</af:name> + <af:computedIn>jMIR</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>The strongest frequency component of a signal, in Hz, found via finding the FFT bin with the highest power.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Attacktime"> + <af:computedIn>libXtract</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/TransientSteadyStateSeparation"> + <af:computedIn>aubio</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Transient / Steady-state Separation (TSS)</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/BeatTrack"> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/BeatTrack2"/> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/BeatTracker"/> + <af:computedIn>SuperCollider</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Autocorrelation based beat tracker</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/HarmonicEnergyEntropy"> + <af:temporalscale>intraframe</af:temporalscale> + <af:complexity>medium</af:complexity> + <af:feature>HarmonicEnergyEntropy</af:feature> + <af:level>perceptual</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>music information retrieval</af:appdomain> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:dimensions>1</af:dimensions> + <af:computation>Entropy</af:computation> + <af:computation>Discrete Fourier Transform</af:computation> + <af:computation>Windowing</af:computation> + <af:computation>Zero-/Level Crossing Detector</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AreaMoments"> + <af:name>Area Method of Moments</af:name> + <af:computedIn>jMIR</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>2D statistical method of moments</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralCenter"> + <af:temporalscale>intraframe</af:temporalscale> + <af:complexity>low</af:complexity> + <af:feature>SpectralCenter</af:feature> + <af:level>perceptual</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>music information retrieval</af:appdomain> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:dimensions>1</af:dimensions> + <af:computation>Energy Spectral Density</af:computation> + <af:computation>Discrete Fourier Transform</af:computation> + <af:computation>Harmonic Peak Detection</af:computation> + <af:computation>Windowing</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/BeatCount"> + <af:feature>Beat Count (Bar and Beat Tracker)</af:feature> + <af:source>Queen Mary, University of London</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>time</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Sparse</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LowEnergy"> + <af:computedIn>MIRToolbox</af:computedIn> + <af:tag>Dynamics</af:tag> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>percentage of frames showing less than average energy</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralStandardDeviation"> + <af:feature>Spectral Standard Deviation</af:feature> + <dc:description>Extract the standard deviation of an audio spectrum</dc:description> + <af:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</af:source> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Spectralstandarddeviation"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SumofValues"> + <af:feature>Sum of Values</af:feature> + <dc:description>Extract the sum of the values in a given range</dc:description> + <af:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PureTonalness"> + <af:computedIn>PsySound3</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralVariability"> + <af:name>Spectral Variability</af:name> + <af:computedIn>jMIR</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>The standard deviation of the magnitude spectrum. This is a measure of the variance of a signal's magnitude spectrum.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralPatternCent"> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralPattern"/> + <af:computedIn>comirva</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LinearPredictionCepstralCoefficients"> + <af:temporalscale>intraframe</af:temporalscale> + <af:complexity>medium</af:complexity> + <af:feature>Marsyas - Batch Feature Extract - Linear Prediction Cepstral Coefficients</af:feature> + <af:feature>LinearPredictionCepstralCoefficients</af:feature> + <dc:description>Convert LPC coefficients to Cepstrum coefficients.</dc:description> + <dc:description>Marsyas - Batch Feature Extract - Linear Prediction Cepstral Coefficients</dc:description> + <af:source>Marsyas Plugins</af:source> + <af:level>physical</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>speech recognition</af:appdomain> + <af:domain>time</af:domain> + <af:domain>cepstral</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:computedIn>Marsyas</af:computedIn> + <af:computedIn>libXtract</af:computedIn> + <af:dimensions>parameterized</af:dimensions> + <af:abbreviation>LPCC</af:abbreviation> + <af:output>Dense</af:output> + <af:computation>Windowing</af:computation> + <af:computation>Band-pass Filter (Bank)</af:computation> + <af:computation>Autoregression (Linear Prediction Analysis)</af:computation> + <af:computation>Cepstral Recursion Formula</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LowFreqEnergyRelation"> + <af:computedIn>CLAM</af:computedIn> + <af:tag>Spectral</af:tag> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>the ratio between the energy over 0-100 Hz band and the whole spectrum energy</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralSlope"> + <af:temporalscale>intraframe</af:temporalscale> + <af:complexity>low</af:complexity> + <af:feature>Spectral Slope</af:feature> + <af:feature>SpectralSlope</af:feature> + <dc:description>measures the spectral slope, which is the slope of the linear correlation line derived from the spectral magnitudes</dc:description> + <dc:description>The spectral slope represents decreasing rate of the spectral amplitude, computed using a linear regression.</dc:description> + <dc:description>SpectralSlope is computed by linear regression of the spectral amplitude. (see [GP2004]_)</dc:description> + <dc:description>the amount of decreasing of the spectral magnitude</dc:description> + <dc:description>Extract the spectral slope of an audio spectrum</dc:description> + <af:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</af:source> + <af:level>physical</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>several</af:appdomain> + <af:domain>frequency</af:domain> + <af:tag>Spectral</af:tag> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>aubio</af:computedIn> + <af:computedIn>CLAM</af:computedIn> + <af:computedIn>Yaafe</af:computedIn> + <af:computedIn>SuperCollider</af:computedIn> + <af:computedIn>Vamp</af:computedIn> + <af:computedIn>libXtract</af:computedIn> + <af:dimensions>4</af:dimensions> + <af:output>Dense</af:output> + <af:computation>Peak Detection</af:computation> + <af:computation>Discrete Fourier Transform</af:computation> + <af:computation>Windowing</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralKurtosis"> + <af:feature>Kurtosis</af:feature> + <af:feature>Spectral Kurtosis</af:feature> + <dc:description>Extract the kurtosis of a range of values</dc:description> + <dc:description>Kurtosis</dc:description> + <dc:description>The kurtosis is a measure of the flatness of the spectrum, computed from the fourth order moment.</dc:description> + <dc:description>Extract the kurtosis of an audio spectrum</dc:description> + <af:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:computedIn>aubio</af:computedIn> + <af:computedIn>libXtract</af:computedIn> + <af:computedIn>Marsyas</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PitchSynchronousZCPA"> + <af:temporalscale>intraframe</af:temporalscale> + <af:complexity>medium</af:complexity> + <af:feature>PitchSynchronousZCPA</af:feature> + <af:model>psychoacoustic</af:model> + <af:level>physical</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>speech recognition</af:appdomain> + <af:domain>temporal</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:dimensions>parameterized</af:dimensions> + <af:computation>Autocorrelation</af:computation> + <af:computation>Band-pass Filter (Bank)</af:computation> + <af:computation>Root Mean Square</af:computation> + <af:computation>Windowing</af:computation> + <af:computation>Logarithm</af:computation> + <af:computation>Sum, Weighted Sum</af:computation> + <af:computation>Spectral binning</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralSmoothness"> + <af:feature>Spectral Smoothness</af:feature> + <dc:description>Extract the spectral smoothness of an audio spectrum</dc:description> + <af:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Multiplicity"> + <af:computedIn>PsySound3</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Flatnessdb"> + <af:computedIn>libXtract</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AutocorrelationMFCCs"> + <af:temporalscale>intraframe</af:temporalscale> + <af:complexity>high</af:complexity> + <af:feature>AutocorrelationMFCCs</af:feature> + <af:model>psychoacoustic</af:model> + <af:level>physical</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>speech recognition</af:appdomain> + <af:domain>cepstral</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:dimensions>parameterized</af:dimensions> + <af:computation>Regression</af:computation> + <af:computation>Autocorrelation</af:computation> + <af:computation>Windowing</af:computation> + <af:computation>Discrete Fourier Transform</af:computation> + <af:computation>Discrete Cosine Transform</af:computation> + <af:computation>Logarithm</af:computation> + <af:computation>Low-pass Filter</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ComplexDomainMethodOnsetDetectionFunction"> + <af:computedIn>aubio</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Complex Domain Method onset detection function.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SubbandSpectralFlux"> + <af:temporalscale>intraframe</af:temporalscale> + <af:complexity>medium</af:complexity> + <af:feature>SubbandSpectralFlux</af:feature> + <af:level>perceptual</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>environmental sound recognition</af:appdomain> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:dimensions>8</af:dimensions> + <af:computation>Regression</af:computation> + <af:computation>Derivation, Difference</af:computation> + <af:computation>Mean</af:computation> + <af:computation>Windowing</af:computation> + <af:computation>Normalization</af:computation> + <af:computation>Discrete Fourier Transform</af:computation> + <af:computation>Logarithm</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/KeyTrack"> + <af:computedIn>SuperCollider</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>A (12TET major/minor) key tracker based on a pitch class profile of energy across FFT bins and matching this to templates for major and minor scales in all transpositions. It assumes a 440 Hz concert A reference. Output is 0-11 C major to B major, 12-23 C minor to B minor.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/BeatTracking"> + <af:computedIn>aubio</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Beat tracking using a context dependant model.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PitchDiff"> + <af:computedIn>Marsyas</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Difference between detected and expected pitch</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralCrestFactorPerBand"> + <af:computedIn>Yaafe</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Compute spectral crest factor per log-spaced band of 1/4 octave.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AubioBeatTracker"> + <af:feature>Aubio Beat Tracker</af:feature> + <dc:description>Estimate the musical tempo and track beat positions</dc:description> + <af:source>Paul Brossier (method by Matthew Davies, plugin by Chris Cannam)</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>time</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/OnsetDetectionFunction"> + <af:feature>Onset Detection Function (Note Onset Detector)</af:feature> + <af:feature>Onset Detection Function (Tempo and Beat Tracker)</af:feature> + <dc:description>Computes the onset detection function and detect peaks in these functions. When onsets are found above a given silence threshold, and after a minimum inter-onset interval, the output vector returned by aubio_onset_do is filled with 1. Otherwise, the output vector remains 0</dc:description> + <dc:description>An onset detector for musical audio signals</dc:description> + <dc:description>These functions are designed to raise at notes attacks in music signals.</dc:description> + <af:source>Queen Mary, University of London</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:computedIn>aubio</af:computedIn> + <af:computedIn>SuperCollider</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PhaseBasedMethodOnsetDetectionFunction"> + <af:computedIn>aubio</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Phase Based Method onset detection function.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/TemporalShapeStatistics"> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralShapeStatistics"/> + <af:computedIn>Yaafe</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Compute :ref:shape statistics shapestatistics of signal frames.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/TempoandBeatTracker"> + <af:feature>Tempo and Beat Tracker</af:feature> + <dc:description>Estimate beat locations and tempo</dc:description> + <af:source>Queen Mary, University of London</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MaxMin"> + <af:computedIn>Marsyas</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Calculate the maximum and minimum values for each observationsignal (per slice).</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/HighFrequencyContent"> + <af:computedIn>CLAM</af:computedIn> + <af:tag>Spectral</af:tag> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>sum of the squared spectrum magnitude multiplied by the wave number of the bin</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Spectralaveragedeviation"> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralAverageDeviation"/> + <af:computedIn>libXtract</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralVariation"> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralVariance"/> + <af:computedIn>Yaafe</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>SpectralVariation is the normalized correlation of :class:spectrum MagnitudeSpectrum between consecutive frames. (see [GP2004]_)</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ChromaMeans"> + <af:feature>Chroma Means (Chromagram)</af:feature> + <af:source>Queen Mary, University of London</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AreaMomentsMFCC"> + <af:name>Area Method of Moments of MFCCs</af:name> + <af:computedIn>jMIR</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>2D statistical method of moments of MFCCs</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AimSSI"> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AimSAI"/> + <af:computedIn>Marsyas</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Size-shape image (aka the 'sscAI')</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PeakFinder"> + <af:name>Peak Detection</af:name> + <af:computedIn>jMIR</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>All peaks that are within an order of magnitude of the highest point</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Roughness"> + <af:computedIn>MIRToolbox</af:computedIn> + <af:tag>Timbre</af:tag> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>The average dissonance between all pairs of peaks in the spectrum</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MandelEllis"> + <af:computedIn>comirva</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AimGammatone"> + <af:computedIn>Marsyas</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Slaney's gammatone filterbank</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralDispersion"> + <af:temporalscale>intraframe</af:temporalscale> + <af:complexity>low</af:complexity> + <af:feature>SpectralDispersion</af:feature> + <af:level>perceptual</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>music information retrieval</af:appdomain> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:dimensions>1</af:dimensions> + <af:computation>Windowing</af:computation> + <af:computation>Energy Spectral Density</af:computation> + <af:computation>Discrete Fourier Transform</af:computation> + <af:computation>Harmonic Peak Detection</af:computation> + <af:computation>Median</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/HarmonicSpectralFlux"> + <af:name>Partial Based Spectral Flux</af:name> + <af:computedIn>jMIR</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Cacluate the correlation bettween adjacent frames based peaks instead of spectral bins. Peak tracking is primitive - whe the number of bins changes, the bottom bins are matched sequentially and the extra unmatched bins are ignored.) definition = new FeatureDefinition(name, description, true, 1) dependencies = new String[] { Peak Detection, Peak Detection } offsets = new int[] { 0, -1 } } /** * Extract the peak based spectral flux from the window. * @param samples * The samples to extract the feature from. * @param sampling_rate * The sampling rate that the samples are encoded with. * @param other_feature_values * The values of other features that are needed to calculate this * value. The order and offsets of these features must be the * same as those returned by this class's getDependencies and * getDependencyOffsets methods respectively. The first indice * indicates the feature/window and the second indicates the * value. * @return The extracted feature value(s). * @throws Exception * Throws an informative exception if the feature cannot be * calculated. * @see jAudioFeatureExtractor.AudioFeatures.FeatureExtractor#extractFeature(double[], * double, double[][]) */ public double[] extractFeature(double[] samples, double sampling_rate, double[][] other_feature_values) { double[] result = new double[1] double[] old = other_feature_values[1] double[] now = other_feature_values[0] double x, y, xy, x2, y2 x = y = xy = x2 = y2 = 0.0 int peakCount = Math.min(old.length, now.length) for (int i = 0 i < peakCount i) { x = old[i] y = now[i] xy = old[i] * now[i] x2 = old[i] * old[i] y2 = now[i] * now[i] } double top = xy - (x * y) / peakCount double bottom = Math.sqrt(Math.abs((x2 - ((x * x) / peakCount)) * (y2 - ((y * y) / peakCount)))) result[0] = top / bottom return result } /** * Proviede a complete copy of this feature. Used to implement the prottype * pattern */ public Object clone() { return new HarmonicSpectralFlux() } }</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Differencevector"> + <af:computedIn>libXtract</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MinArgMin"> + <af:computedIn>Marsyas</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Calculate k minimums and their positions</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/TristimulusIII"> + <af:feature>Tristimulus III</af:feature> + <dc:description>Extract the tristimulus (type III) of an audio spectrum</dc:description> + <af:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</af:source> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Tristimulus2"/> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Tristimulus3"/> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/TristimulusI"/> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Tristimulus1"/> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/TristimulusII"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Segmenter"> + <af:feature>Segmenter</af:feature> + <dc:description>Divide the track into a sequence of consistent segments</dc:description> + <af:source>Queen Mary, University of London</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>time</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Sparse</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Irregularityj"> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Irregularity"/> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IrregularityI"/> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IrregularityII"/> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Irregularityk"/> + <af:computedIn>libXtract</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ADRessSpectrum"> + <af:computedIn>Marsyas</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Takes the output of the ADRess (i.e. the stereo azimuth-frequencymaps) and outputs a single channel spectrum of the part of the freq-azimuth</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/RunningAutocorrelation"> + <af:computedIn>Marsyas</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Running calculation (across slices) of the autocorrelation values.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralCentroid"> + <af:temporalscale>intraframe</af:temporalscale> + <af:complexity>low</af:complexity> + <af:feature>Spectral Centroid</af:feature> + <af:feature>SpectralCentroid</af:feature> + <af:feature>Marsyas - Batch Feature Extract - Centroid</af:feature> + <dc:description>the weighted mean frequency, or the "centre of mass" of the spectrum</dc:description> + <dc:description>Centroid of each time slice of observations</dc:description> + <dc:description>The spectral centroid represents the barycenter of the spectrum.</dc:description> + <dc:description>Extract the spectral centroid of an audio spectrum</dc:description> + <dc:description>The centre of mass of the power spectrum.</dc:description> + <dc:description>Marsyas - Batch Feature Extract - Centroid</dc:description> + <dc:description>the frequency where the center of mass of the spectral power distribution lies</dc:description> + <af:source>Marsyas Plugins</af:source> + <af:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</af:source> + <af:level>perceptual</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>several</af:appdomain> + <af:domain>time</af:domain> + <af:domain>frequency</af:domain> + <af:tag>Spectral</af:tag> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:name>Spectral Centroid</af:name> + <af:computedIn>aubio</af:computedIn> + <af:computedIn>CLAM</af:computedIn> + <af:computedIn>Marsyas</af:computedIn> + <af:computedIn>jMIR</af:computedIn> + <af:computedIn>SuperCollider</af:computedIn> + <af:computedIn>Vamp</af:computedIn> + <af:computedIn>libXtract</af:computedIn> + <af:computedIn>sMIRk</af:computedIn> + <af:dimensions>1</af:dimensions> + <af:output>Dense</af:output> + <af:computation>Regression</af:computation> + <af:computation>Logarithm</af:computation> + <af:computation>Mean</af:computation> + <af:computation>Discrete Fourier Transform</af:computation> + <af:computation>Windowing</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/BeatTrack2"> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/BeatTrack"/> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/BeatTracker"/> + <af:computedIn>SuperCollider</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>based on exhaustively testing particular template patterns against feature streams</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralDecrease"> + <af:computedIn>Yaafe</af:computedIn> + <af:computedIn>aubio</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Compute spectral decrease accoding to [GP2004]_.</dc:description> + <dc:description>The spectral decrease is another representation of the decreasing rate, based on perceptual criteria.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PitchYin"> + <af:computedIn>aubio</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Pitch detection using the YIN algorithm</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AimSAI"> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AimSSI"/> + <af:computedIn>Marsyas</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Stabilised auditory image</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralDissonance"> + <af:computedIn>PsySound3</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AutoCorrelation"> + <af:feature>Autocorrelation</af:feature> + <dc:description>Compute the generalized autocorrelation of input window</dc:description> + <dc:description>Extract the autocorrelation of an audio signal</dc:description> + <dc:description>Compute autocorrelation coefficients *ac* on each frames.</dc:description> + <af:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</af:source> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Autocorrelationfft"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>time</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:computedIn>Marsyas</af:computedIn> + <af:computedIn>Yaafe</af:computedIn> + <af:computedIn>libXtract</af:computedIn> + <af:computedIn>sMIRk</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Oddevenratio"> + <af:computedIn>libXtract</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AbsMax"> + <af:computedIn>Marsyas</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Calculate the maximum absolute value for each observationsignal (per slice).</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Nonzerocount"> + <af:feature>Non-zero count</af:feature> + <dc:description>Extract the number of non-zero elements in an input spectrum</dc:description> + <af:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:computedIn>libXtract</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ModifiedKullbackLieblerOnsetDetectionFunction"> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/KullbackLieblerOnsetDetectionFunction"/> + <af:computedIn>aubio</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Modified Kullback-Liebler onset detection function.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Cepstrum"> + <af:computedIn>Yaafe</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Feature transform that compute cepstrum coefficients of input feature frames. (use DCT II)</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralAverageDeviation"> + <af:feature>Spectral Average Deviation</af:feature> + <dc:description>Extract the average deviation of an audio spectrum</dc:description> + <af:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</af:source> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Spectralaveragedeviation"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/OBSIR"> + <af:computedIn>Yaafe</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Compute log of :class:OBSI ratio between consecutive octave.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Attack"> + <af:tag>Timbre</af:tag> + <dc:description>estimates the beginning of the attack phase of a note by locating the local minimum before the maximum corresponding to the onset</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <rdfs:comment>These can have start time *and end time*</rdfs:comment> + <af:computedIn>MIRToolbox</af:computedIn> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/KeyDetector"> + <af:feature>Key Detector</af:feature> + <dc:description>Estimate the key of the music</dc:description> + <af:source>Queen Mary, University of London</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>time</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LocalTuning"> + <af:feature>Local Tuning (Tuning)</af:feature> + <af:source>Matthias Mauch</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/HarmonicPitchClassProfile"> + <af:feature>HPCP</af:feature> + <dc:description>Return the instantaneous evolution of HPCP (Harmonic Pitch Class Profile) of a signal.</dc:description> + <af:source>Music Technology Group, Universitat Pompeu Fabra</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Energy"> + <af:computedIn>Yaafe</af:computedIn> + <af:computedIn>Marsyas</af:computedIn> + <af:computedIn>CLAM</af:computedIn> + <af:tag>Spectral</af:tag> + <af:tag>Audio</af:tag> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>the squared sum of spectral power distribution values</dc:description> + <dc:description>compute the Energy of the input observations into one column*/</dc:description> + <dc:description>the squared sum of audio samples amplitudes</dc:description> + <dc:description>Compute energy as root mean square of an audio Frame.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Lowestvalue"> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LowestValue"/> + <af:computedIn>libXtract</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/HistogramIntegrator"> + <af:computedIn>Yaafe</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Feature transform that compute histogram of input values</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MPEG7AudioSpectrumBasis"> + <af:temporalscale>interframe</af:temporalscale> + <af:complexity>high</af:complexity> + <af:feature>MPEG7AudioSpectrumBasis</af:feature> + <af:level>physical</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>environmental sound recognition</af:appdomain> + <af:domain>eigendomain</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>MPEG-7</af:computedIn> + <af:dimensions>parameterized</af:dimensions> + <af:computation>Regression</af:computation> + <af:computation>Windowing</af:computation> + <af:computation>Normalization</af:computation> + <af:computation>Discrete Fourier Transform</af:computation> + <af:computation>Logarithm</af:computation> + <af:computation>Independent Component Analysis</af:computation> + <af:computation>Singular Value Decomposition</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MIDI"> + <af:computedIn>MIRToolbox</af:computedIn> + <af:tag>Pitch</af:tag> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>estimates MIDI note value based on segmentation and pitch detection</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DistancefromFirstChannel"> + <af:feature>Distance from First Channel (Similarity)</af:feature> + <af:source>Queen Mary, University of London</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>time</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AubioYin"> + <af:computedIn>Marsyas</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Pitch detection using the YIN algorithm</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Chordino"> + <af:feature>Chordino</af:feature> + <dc:description>Chordino provides a simple chord transcription based on NNLS Chroma (as in the NNLS Chroma plugin). Chord profiles given by the user in the file chord.dict are used to calculate frame-wise chord similarities. A simple (non-state-of-the-art!) algorithm smoothes these to provide a chord transcription using a standard HMM/Viterbi approach.</dc:description> + <af:source>Matthias Mauch</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SlopeIntegrator"> + <af:computedIn>Yaafe</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Feature transform that compute the slope of input feature over the given number of frames.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/TimbralWidth"> + <af:computedIn>PsySound3</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/NoteOnsets"> + <af:feature>Note Onsets (Note Onset Detector)</af:feature> + <af:source>Queen Mary, University of London</af:source> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/NoteOnset"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Sparse</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Mode"> + <af:computedIn>MIRToolbox</af:computedIn> + <af:tag>Tonality</af:tag> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Major vs. Minor, calculated as the strength difference between the best major and best minor key candidates</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PeakPicker"> + <af:computedIn>aubio</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Peak picking utilities function</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/RootMeanSquare"> + <af:name>Root Mean Square</af:name> + <af:computedIn>jMIR</af:computedIn> + <af:computedIn>sMIRk</af:computedIn> + <af:computedIn>Marsyas</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>A measure of the power of a signal.</dc:description> + <dc:description>Rms energy of realvec</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PitchProfile"> + <af:temporalscale>intraframe</af:temporalscale> + <af:complexity>high</af:complexity> + <af:feature>PitchProfile</af:feature> + <af:level>perceptual</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>music information retrieval</af:appdomain> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:dimensions>12</af:dimensions> + <af:computation>Sum, Weighted Sum</af:computation> + <af:computation>Windowing</af:computation> + <af:computation>Root Mean Square</af:computation> + <af:computation>Spectral binning</af:computation> + <af:computation>Constant Q Transform</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AverageDeviation"> + <af:feature>Average Deviation</af:feature> + <dc:description>Extract the average deviation of a range of values</dc:description> + <af:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</af:source> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Averagedeviation"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + <af:output>Dense</af:output> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DaubechiesWaveletCoefficientHistogram"> + <af:temporalscale>intraframe</af:temporalscale> + <af:complexity>medium</af:complexity> + <af:feature>DaubechiesWaveletCoefficientHistogram</af:feature> + <af:level>physical</af:level> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:appdomain>music information retrieval</af:appdomain> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:dimensions>28</af:dimensions> + <af:computation>Windowing</af:computation> + <af:computation>Spectral binning</af:computation> + <af:computation>Discrete Wavelet Transform</af:computation> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Deviation"> + <af:computedIn>Marsyas</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Standard Deviation of each row of observations</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/NNLSChroma"> + <af:feature>NNLS Chroma</af:feature> + <dc:description>This plugin provides a number of features derived from a DFT-based log-frequency amplitude spectrum: some variants of the log-frequency spectrum, including a semitone spectrum derived from approximate transcription using the NNLS algorithm; and based on this semitone spectrum, different chroma features.</dc:description> + <af:source>Matthias Mauch</af:source> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:domain>frequency</af:domain> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>Vamp</af:computedIn> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FilterbankMel"> + <af:computedIn>aubio</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Mel frequency filter bank coefficients. Set filter bank coefficients to Mel frequency bands</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Autocorrelationfft"> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AutoCorrelation"/> + <af:computedIn>libXtract</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Irregularity"> + <af:tag>Timbre</af:tag> + <dc:description>The degree of variation of the successive peaks of the spectrum</dc:description> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Irregularityj"/> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IrregularityI"/> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IrregularityII"/> + <af:similarTo rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Irregularityk"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <af:computedIn>MIRToolbox</af:computedIn> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PitchFftYin"> + <af:computedIn>aubio</af:computedIn> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioFeature"/> + <dc:description>Pitch detection using a spectral implementation of the YIN algorithm</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> +</rdf:RDF>
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/baseOnto.n3 Mon Feb 25 14:40:54 2013 +0000 @@ -0,0 +1,1649 @@ +@prefix af: <http://sovarr.c4dm.eecs.qmul.ac.uk/features/> . +@prefix dc: <http://purl.org/dc/elements/1.1/> . +@prefix owl: <http://www.w3.org/2002/07/owl#> . +@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> . +@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . +@prefix vs: <http://www.w3.org/2003/06/sw-vocab-status/ns#> . +@prefix xsd: <http://www.w3.org/2001/XMLSchema#> . + +<> a owl:Ontology ; + dc:description "This is a base ontology for the Audio Features engineering process collected from literature" ; + dc:title "Audio Features Base Ontology" ; + owl:versionInfo "Version 0.1" . + +<http://sovarr.c4dm.eecs.qmul.ac.uk/features/4HzModulationEnergy> a owl:Class ; + rdfs:label "4 Hz Modulation Energy", + "4HzModulationEnergy" ; + af:application_domain af:AudioSegmentation ; + af:computation af:BandpassFilterBank, + af:DiscreteFourierTransform, + af:EnergySpectralDensity, + af:Normalization, + af:Regression, + af:RootMeanSquare, + af:Windowing ; + af:computational_complexity af:MediumComplexity ; + af:dimensions 1 ; + af:psychoacoustic_model true ; + af:semantic_interpretation af:PhysicalFeature ; + af:temporal_scale af:InterFrame ; + rdfs:comment "4 Hz Modulation Energy feature" ; + rdfs:subClassOf af:ModulationfrequencyFeature ; + vs:term_status "testing" . + +<http://sovarr.c4dm.eecs.qmul.ac.uk/features/4HzModulationHarmonicCoefficients> a owl:Class ; + rdfs:label "4 Hz Modulation Harmonic Coefficients", + "4HzModulationHarmonicCoefficients" ; + af:application_domain af:AudioSegmentation ; + af:computation af:Autocorrelation, + af:BandpassFilterBank, + af:DiscreteCosineTransform, + af:SumWeightedSum, + af:Windowing ; + af:computational_complexity af:MediumComplexity ; + af:dimensions 1 ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PhysicalFeature ; + af:temporal_scale af:InterFrame ; + rdfs:comment "4 Hz Modulation Harmonic Coefficients feature" ; + rdfs:subClassOf af:ModulationfrequencyFeature ; + vs:term_status "testing" . + +af:AmplitudeDescriptor a owl:Class ; + rdfs:label "Amplitude Descriptor", + "AmplitudeDescriptor" ; + af:application_domain af:EnvironmentalSoundRecognition ; + af:computation af:Mean, + af:Median, + af:Spectralbinning, + af:Windowing ; + af:computational_complexity af:LowComplexity ; + af:dimensions 9 ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PhysicalFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "Amplitude Descriptor feature" ; + rdfs:subClassOf af:TemporalFeature ; + vs:term_status "testing" . + +af:AuditoryFilterBankTemporalEnvelopes a owl:Class ; + rdfs:label "Auditory Filter Bank Temporal Envelopes", + "AuditoryFilterBankTemporalEnvelopes" ; + af:application_domain af:MusicInformationRetrieval ; + af:computation af:BandpassFilterBank, + af:EnergySpectralDensity, + af:RootMeanSquare, + af:Windowing ; + af:computational_complexity af:MediumComplexity ; + af:dimensions 62 ; + af:psychoacoustic_model true ; + af:semantic_interpretation af:PhysicalFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "Auditory Filter Bank Temporal Envelopes feature" ; + rdfs:subClassOf af:ModulationfrequencyFeature ; + vs:term_status "testing" . + +af:AutocorrelationMFCCs a owl:Class ; + rdfs:label "Autocorrelation MFCCs", + "AutocorrelationMFCCs" ; + af:application_domain af:SpeechRecognition ; + af:computation af:Autocorrelation, + af:DiscreteCosineTransform, + af:DiscreteFourierTransform, + af:Logarithm, + af:LowpassFilter, + af:Regression, + af:Windowing ; + af:computational_complexity af:HighComplexity ; + af:dimensions af:ParametrizedDimensions ; + af:psychoacoustic_model true ; + af:semantic_interpretation af:PhysicalFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "Autocorrelation MFCCs feature" ; + rdfs:subClassOf af:CepstralFeature ; + vs:term_status "testing" . + +af:BandPeriodicity a owl:Class ; + rdfs:label "Band Periodicity", + "BandPeriodicity" ; + af:application_domain af:AudioSegmentation ; + af:computation af:Autocorrelation, + af:BandpassFilterBank, + af:RootMeanSquare, + af:SumWeightedSum, + af:Windowing ; + af:computational_complexity af:MediumComplexity ; + af:dimensions 4 ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PerceptualFeature ; + af:temporal_scale af:InterFrame ; + rdfs:comment "Band Periodicity feature" ; + rdfs:subClassOf af:ModulationfrequencyFeature ; + vs:term_status "testing" . + +af:Bandwidth a owl:Class ; + rdfs:label "Bandwidth" ; + af:application_domain af:Several ; + af:computation af:DiscreteFourierTransform, + af:Logarithm, + af:Median, + af:Regression, + af:Windowing ; + af:computational_complexity af:LowComplexity ; + af:dimensions 1 ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PerceptualFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "Bandwidth feature" ; + rdfs:subClassOf af:FrequencyDomainPerceptualFeature ; + vs:term_status "testing" . + +af:BarkscaleFrequencyCepstralCoefficients a owl:Class ; + rdfs:label "Bark-scale Frequency Cepstral Coefficients", + "BarkscaleFrequencyCepstralCoefficients" ; + af:application_domain af:Several ; + af:computation af:DiscreteCosineTransform, + af:DiscreteFourierTransform, + af:Logarithm, + af:Regression, + af:Windowing ; + af:computational_complexity af:HighComplexity ; + af:dimensions af:ParametrizedDimensions ; + af:psychoacoustic_model true ; + af:semantic_interpretation af:PhysicalFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "Bark-scale Frequency Cepstral Coefficients feature" ; + rdfs:subClassOf af:CepstralFeature ; + vs:term_status "testing" . + +af:BeatHistogram a owl:Class ; + rdfs:label "Beat Histogram", + "BeatHistogram" ; + af:application_domain af:MusicInformationRetrieval ; + af:computation af:Autocorrelation, + af:DiscreteWaveletTransform, + af:LowpassFilter, + af:RootMeanSquare, + af:Spectralbinning, + af:Windowing ; + af:computational_complexity af:MediumComplexity ; + af:dimensions 6 ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PerceptualFeature ; + af:temporal_scale af:InterFrame ; + rdfs:comment "Beat Histogram feature" ; + rdfs:subClassOf af:ModulationfrequencyFeature ; + vs:term_status "testing" . + +af:BeatSpectrum a owl:Class ; + rdfs:label "Beat Spectrum", + "BeatSpectrum" ; + af:application_domain af:MusicInformationRetrieval ; + af:computation af:Autocorrelation, + af:CrossCorrelation, + af:DiscreteFourierTransform, + af:Logarithm, + af:LowpassFilter, + af:Windowing ; + af:computational_complexity af:HighComplexity ; + af:dimensions af:ParametrizedDimensions ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PerceptualFeature ; + af:temporal_scale af:InterFrame ; + rdfs:comment "Beat Spectrum feature" ; + rdfs:subClassOf af:ModulationfrequencyFeature ; + vs:term_status "testing" . + +af:BeatTracker a owl:Class ; + rdfs:label "Beat Tracker", + "BeatTracker" ; + af:application_domain af:MusicInformationRetrieval ; + af:computation af:BandpassFilterBank, + af:CombFilterBank, + af:DerivationDifference, + af:LowpassFilter, + af:RootMeanSquare, + af:Windowing ; + af:computational_complexity af:HighComplexity ; + af:dimensions 1 ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PerceptualFeature ; + af:temporal_scale af:InterFrame ; + rdfs:comment "Beat Tracker feature" ; + rdfs:subClassOf af:ModulationfrequencyFeature ; + vs:term_status "testing" . + +af:ChromaCENSFeatures a owl:Class ; + rdfs:label "Chroma CENS Features", + "ChromaCENSFeatures" ; + af:application_domain af:MusicInformationRetrieval ; + af:computation af:BandpassFilterBank, + af:LowpassFilter, + af:Normalization, + af:RootMeanSquare, + af:Windowing ; + af:computational_complexity af:MediumComplexity ; + af:dimensions 12 ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PerceptualFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "Chroma CENS Features feature" ; + rdfs:subClassOf af:FrequencyDomainPerceptualFeature ; + vs:term_status "testing" . + +af:Chromagram a owl:Class ; + rdfs:label "Chromagram" ; + af:application_domain af:MusicInformationRetrieval ; + af:computation af:DiscreteFourierTransform, + af:Logarithm, + af:RootMeanSquare, + af:Windowing ; + af:computational_complexity af:MediumComplexity ; + af:dimensions 12 ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PerceptualFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "Chromagram feature" ; + rdfs:subClassOf af:FrequencyDomainPerceptualFeature ; + vs:term_status "testing" . + +af:CyclicBeatSpectrum a owl:Class ; + rdfs:label "Cyclic Beat Spectrum", + "CyclicBeatSpectrum" ; + af:application_domain af:MusicInformationRetrieval ; + af:computation af:CombFilterBank, + af:DerivationDifference, + af:DiscreteFourierTransform, + af:LowpassFilter, + af:RootMeanSquare, + af:Windowing ; + af:computational_complexity af:HighComplexity ; + af:dimensions af:ParametrizedDimensions ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PerceptualFeature ; + af:temporal_scale af:InterFrame ; + rdfs:comment "Cyclic Beat Spectrum feature" ; + rdfs:subClassOf af:ModulationfrequencyFeature ; + vs:term_status "testing" . + +af:DWPTbasedRhythmFeature a owl:Class ; + rdfs:label "DWPT-based Rhythm Feature", + "DWPTbasedRhythmFeature" ; + af:application_domain af:MusicInformationRetrieval ; + af:computation af:Autocorrelation, + af:DiscreteWaveletTransform, + af:RootMeanSquare, + af:Spectralbinning, + af:Windowing ; + af:computational_complexity af:MediumComplexity ; + af:dimensions af:ParametrizedDimensions ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PerceptualFeature ; + af:temporal_scale af:InterFrame ; + rdfs:comment "DWPT-based Rhythm Feature feature" ; + rdfs:subClassOf af:ModulationfrequencyFeature ; + vs:term_status "testing" . + +af:DaubechiesWaveletCoefficientHistogram a owl:Class ; + rdfs:label "Daubechies Wavelet Coefficient Histogram", + "DaubechiesWaveletCoefficientHistogram" ; + af:application_domain af:MusicInformationRetrieval ; + af:computation af:DiscreteWaveletTransform, + af:Spectralbinning, + af:Windowing ; + af:computational_complexity af:MediumComplexity ; + af:dimensions 28 ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PhysicalFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "Daubechies Wavelet Coefficient Histogram feature" ; + rdfs:subClassOf af:FrequencyDomainPhysicalFeature ; + vs:term_status "testing" . + +af:DistortionDiscriminantAnalysis a owl:Class ; + rdfs:label "Distortion Discriminant Analysis", + "DistortionDiscriminantAnalysis" ; + af:application_domain af:Fingerprinting ; + af:computation af:Logarithm, + af:ModulatedComplexLappedTransform, + af:PrincipalComponentAnalysis, + af:Windowing ; + af:computational_complexity af:HighComplexity ; + af:dimensions 64 ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PhysicalFeature ; + af:temporal_scale af:InterFrame ; + rdfs:comment "Distortion Discriminant Analysis feature" ; + rdfs:subClassOf af:EigendomainFeature ; + vs:term_status "testing" . + +af:HarmonicCoefficient a owl:Class ; + rdfs:label "Harmonic Coefficient", + "HarmonicCoefficient" ; + af:application_domain af:AudioSegmentation ; + af:computation af:Autocorrelation, + af:SumWeightedSum, + af:Windowing ; + af:computational_complexity af:LowComplexity ; + af:dimensions 1 ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PerceptualFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "Harmonic Coefficient feature" ; + rdfs:subClassOf af:FrequencyDomainPerceptualFeature ; + vs:term_status "testing" . + +af:HarmonicConcentration a owl:Class ; + rdfs:label "Harmonic Concentration", + "HarmonicConcentration" ; + af:application_domain af:MusicInformationRetrieval ; + af:computation af:DiscreteFourierTransform, + af:EnergySpectralDensity, + af:LevelCrossingDetector, + af:RootMeanSquare, + af:Windowing ; + af:computational_complexity af:MediumComplexity ; + af:dimensions 1 ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PerceptualFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "Harmonic Concentration feature" ; + rdfs:subClassOf af:FrequencyDomainPerceptualFeature ; + vs:term_status "testing" . + +af:HarmonicDerivate a owl:Class ; + rdfs:label "Harmonic Derivate", + "HarmonicDerivate" ; + af:application_domain af:MusicInformationRetrieval ; + af:computation af:DerivationDifference, + af:DiscreteFourierTransform, + af:Logarithm, + af:Windowing ; + af:computational_complexity af:MediumComplexity ; + af:dimensions af:ParametrizedDimensions ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PerceptualFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "Harmonic Derivate feature" ; + rdfs:subClassOf af:FrequencyDomainPerceptualFeature ; + vs:term_status "testing" . + +af:HarmonicEnergyEntropy a owl:Class ; + rdfs:label "Harmonic Energy Entropy", + "HarmonicEnergyEntropy" ; + af:application_domain af:MusicInformationRetrieval ; + af:computation af:DiscreteFourierTransform, + af:Entropy, + af:LevelCrossingDetector, + af:Windowing ; + af:computational_complexity af:MediumComplexity ; + af:dimensions 1 ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PerceptualFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "Harmonic Energy Entropy feature" ; + rdfs:subClassOf af:FrequencyDomainPerceptualFeature ; + vs:term_status "testing" . + +af:HarmonicProminence a owl:Class ; + rdfs:label "Harmonic Prominence", + "HarmonicProminence" ; + af:application_domain af:EnvironmentalSoundRecognition ; + af:computation af:Autocorrelation, + af:LevelCrossingDetector, + af:Windowing ; + af:computational_complexity af:MediumComplexity ; + af:dimensions 1 ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PerceptualFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "Harmonic Prominence feature" ; + rdfs:subClassOf af:FrequencyDomainPerceptualFeature ; + vs:term_status "testing" . + +af:Inharmonicity a owl:Class ; + rdfs:label "Inharmonicity" ; + af:application_domain af:MusicInformationRetrieval ; + af:computation af:Autocorrelation, + af:LevelCrossingDetector, + af:Median, + af:Windowing ; + af:computational_complexity af:MediumComplexity ; + af:dimensions 1 ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PerceptualFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "Inharmonicity feature" ; + rdfs:subClassOf af:FrequencyDomainPerceptualFeature ; + vs:term_status "testing" . + +af:IntegralLoudness a owl:Class ; + rdfs:label "Integral Loudness", + "IntegralLoudness" ; + af:application_domain af:MusicInformationRetrieval ; + af:computation af:DiscreteFourierTransform, + af:ExponentialFunction, + af:Logarithm, + af:NonLinearWeightingFunction, + af:RootMeanSquare, + af:Windowing ; + af:computational_complexity af:HighComplexity ; + af:dimensions 1 ; + af:psychoacoustic_model true ; + af:semantic_interpretation af:PerceptualFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "Integral Loudness feature" ; + rdfs:subClassOf af:FrequencyDomainPerceptualFeature ; + vs:term_status "testing" . + +af:JointAcousticandModuluationFrequency a owl:Class ; + rdfs:label "Joint Acoustic and Moduluation Frequency", + "JointAcousticandModuluationFrequency" ; + af:application_domain af:Several ; + af:computation af:DiscreteFourierTransform, + af:DiscreteWaveletTransform, + af:LowpassFilter, + af:Regression, + af:RootMeanSquare, + af:Windowing ; + af:computational_complexity af:HighComplexity ; + af:dimensions af:ParametrizedDimensions ; + af:psychoacoustic_model true ; + af:semantic_interpretation af:PhysicalFeature ; + af:temporal_scale af:InterFrame ; + rdfs:comment "Joint Acoustic and Moduluation Frequency feature" ; + rdfs:subClassOf af:ModulationfrequencyFeature ; + vs:term_status "testing" . + +af:LineSpectralFrequencies a owl:Class ; + rdfs:label "Line Spectral Frequencies", + "LineSpectralFrequencies" ; + af:application_domain af:Several ; + af:computation af:AutoregressionLinearPredictionAnalysis, + af:Percentile, + af:Windowing ; + af:computational_complexity af:MediumComplexity ; + af:dimensions af:ParametrizedDimensions ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PhysicalFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "Line Spectral Frequencies feature" ; + rdfs:subClassOf af:FrequencyDomainPhysicalFeature ; + vs:term_status "testing" . + +af:LinearPredictionCepstralCoefficients a owl:Class ; + rdfs:label "Linear Prediction Cepstral Coefficients", + "LinearPredictionCepstralCoefficients" ; + af:abbreviation "LPCC" ; + af:application_domain af:SpeechRecognition ; + af:computation af:AutoregressionLinearPredictionAnalysis, + af:BandpassFilterBank, + af:CepstralRecursionFormula, + af:Windowing ; + af:computational_complexity af:MediumComplexity ; + af:dimensions af:ParametrizedDimensions ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PhysicalFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "Linear Prediction Cepstral Coefficients feature" ; + rdfs:subClassOf af:CepstralFeature ; + vs:term_status "testing" . + +af:LinearPredictionZCR a owl:Class ; + rdfs:label "Linear Prediction ZCR", + "LinearPredictionZCR" ; + af:application_domain af:SpeechRecognition ; + af:computation af:AutoregressionLinearPredictionAnalysis, + af:Spectralbinning, + af:Windowing ; + af:computational_complexity af:LowComplexity ; + af:dimensions 1 ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PhysicalFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "Linear Prediction ZCR feature" ; + rdfs:subClassOf af:TemporalFeature ; + vs:term_status "testing" . + +af:LinearPredictiveCoding a owl:Class ; + rdfs:label "Linear Predictive Coding", + "LinearPredictiveCoding" ; + af:abbreviation "LPC" ; + af:application_domain af:SpeechRecognition ; + af:computation af:AutoregressionLinearPredictionAnalysis, + af:BandpassFilterBank, + af:DiscreteFourierTransform, + af:Windowing ; + af:computational_complexity af:LowComplexity ; + af:dimensions af:ParametrizedDimensions ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PhysicalFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "Linear Predictive Coding feature" ; + rdfs:subClassOf af:FrequencyDomainPhysicalFeature ; + vs:term_status "testing" . + +af:MPEG7AudioFundamentalFrequency a owl:Class ; + rdfs:label "MPEG-7 Audio Fundamental Frequency", + "MPEG7AudioFundamentalFrequency" ; + af:application_domain af:Several ; + af:computation af:Autocorrelation, + af:SumWeightedSum, + af:Windowing ; + af:computational_complexity af:LowComplexity ; + af:computedIn "MPEG-7" ; + af:dimensions 2 ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PerceptualFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "MPEG-7 Audio Fundamental Frequency feature" ; + rdfs:subClassOf af:FrequencyDomainPerceptualFeature ; + vs:term_status "testing" . + +af:MPEG7AudioHarmonicity a owl:Class ; + rdfs:label "MPEG-7 Audio Harmonicity", + "MPEG7AudioHarmonicity" ; + af:application_domain af:Several ; + af:computation af:Autocorrelation, + af:SumWeightedSum, + af:Windowing ; + af:computational_complexity af:MediumComplexity ; + af:computedIn "MPEG-7" ; + af:dimensions 2 ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PerceptualFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "MPEG-7 Audio Harmonicity feature" ; + rdfs:subClassOf af:FrequencyDomainPerceptualFeature ; + vs:term_status "testing" . + +af:MPEG7AudioSpectrumBasis a owl:Class ; + rdfs:label "MPEG-7 Audio Spectrum Basis", + "MPEG7AudioSpectrumBasis" ; + af:application_domain af:EnvironmentalSoundRecognition ; + af:computation af:DiscreteFourierTransform, + af:IndependentComponentAnalysis, + af:Logarithm, + af:Normalization, + af:Regression, + af:SingularValueDecomposition, + af:Windowing ; + af:computational_complexity af:HighComplexity ; + af:computedIn "MPEG-7" ; + af:dimensions af:ParametrizedDimensions ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PhysicalFeature ; + af:temporal_scale af:InterFrame ; + rdfs:comment "MPEG-7 Audio Spectrum Basis feature" ; + rdfs:subClassOf af:EigendomainFeature ; + vs:term_status "testing" . + +af:MPEG7AudioSpectrumCentroid a owl:Class ; + rdfs:label "MPEG-7 Audio Spectrum Centroid", + "MPEG7AudioSpectrumCentroid" ; + af:application_domain af:Several ; + af:computation af:DiscreteFourierTransform, + af:Logarithm, + af:Mean, + af:Regression, + af:Windowing ; + af:computational_complexity af:MediumComplexity ; + af:computedIn "MPEG-7" ; + af:dimensions 1 ; + af:psychoacoustic_model true ; + af:semantic_interpretation af:PerceptualFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "MPEG-7 Audio Spectrum Centroid feature" ; + rdfs:subClassOf af:FrequencyDomainPerceptualFeature ; + vs:term_status "testing" . + +af:MPEG7AudioSpectrumSpread a owl:Class ; + rdfs:label "MPEG-7 Audio Spectrum Spread", + "MPEG7AudioSpectrumSpread" ; + af:application_domain af:Several ; + af:computation af:DiscreteFourierTransform, + af:Logarithm, + af:Median, + af:Regression, + af:Windowing ; + af:computational_complexity af:MediumComplexity ; + af:computedIn "MPEG-7" ; + af:dimensions 1 ; + af:psychoacoustic_model true ; + af:semantic_interpretation af:PerceptualFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "MPEG-7 Audio Spectrum Spread feature" ; + rdfs:subClassOf af:FrequencyDomainPerceptualFeature ; + vs:term_status "testing" . + +af:MPEG7AudioWaveform a owl:Class ; + rdfs:label "MPEG-7 Audio Waveform", + "MPEG7AudioWaveform" ; + af:computation af:Histogram, + af:SumWeightedSum, + af:Windowing ; + af:computational_complexity af:LowComplexity ; + af:computedIn "MPEG-7" ; + af:dimensions 2 ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PhysicalFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "MPEG-7 Audio Waveform feature" ; + rdfs:subClassOf af:TemporalFeature ; + vs:term_status "testing" . + +af:MPEG7HarmonicSpectralCentroid a owl:Class ; + rdfs:label "MPEG-7 Harmonic Spectral Centroid", + "MPEG7HarmonicSpectralCentroid" ; + af:application_domain af:MusicInformationRetrieval ; + af:computation af:DiscreteFourierTransform, + af:LevelCrossingDetector, + af:Mean, + af:Windowing ; + af:computational_complexity af:MediumComplexity ; + af:computedIn "MPEG-7" ; + af:dimensions 1 ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PerceptualFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "MPEG-7 Harmonic Spectral Centroid feature" ; + rdfs:subClassOf af:FrequencyDomainPerceptualFeature ; + vs:term_status "testing" . + +af:MPEG7HarmonicSpectralDeviation a owl:Class ; + rdfs:label "MPEG-7 Harmonic Spectral Deviation", + "MPEG7HarmonicSpectralDeviation" ; + af:application_domain af:MusicInformationRetrieval ; + af:computation af:DiscreteFourierTransform, + af:LevelCrossingDetector, + af:Logarithm, + af:Mean, + af:Median, + af:Windowing ; + af:computational_complexity af:MediumComplexity ; + af:computedIn "MPEG-7" ; + af:dimensions 1 ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PerceptualFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "MPEG-7 Harmonic Spectral Deviation feature" ; + rdfs:subClassOf af:FrequencyDomainPerceptualFeature ; + vs:term_status "testing" . + +af:MPEG7HarmonicSpectralSpread a owl:Class ; + rdfs:label "MPEG-7 Harmonic Spectral Spread", + "MPEG7HarmonicSpectralSpread" ; + af:application_domain af:MusicInformationRetrieval ; + af:computation af:DiscreteFourierTransform, + af:LevelCrossingDetector, + af:Median, + af:Windowing ; + af:computational_complexity af:MediumComplexity ; + af:computedIn "MPEG-7" ; + af:dimensions 1 ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PerceptualFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "MPEG-7 Harmonic Spectral Spread feature" ; + rdfs:subClassOf af:FrequencyDomainPerceptualFeature ; + vs:term_status "testing" . + +af:MPEG7HarmonicSpectralVariation a owl:Class ; + rdfs:label "MPEG-7 Harmonic Spectral Variation", + "MPEG7HarmonicSpectralVariation" ; + af:application_domain af:MusicInformationRetrieval ; + af:computation af:CrossCorrelation, + af:DiscreteFourierTransform, + af:LevelCrossingDetector, + af:Windowing ; + af:computational_complexity af:MediumComplexity ; + af:computedIn "MPEG-7" ; + af:dimensions 1 ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PerceptualFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "MPEG-7 Harmonic Spectral Variation feature" ; + rdfs:subClassOf af:FrequencyDomainPerceptualFeature ; + vs:term_status "testing" . + +af:MPEG7LogAttackTime a owl:Class ; + rdfs:label "MPEG-7 Log Attack Time", + "MPEG7LogAttackTime" ; + af:application_domain af:MusicInformationRetrieval ; + af:computation af:Logarithm, + af:Power, + af:RootMeanSquare, + af:Windowing ; + af:computational_complexity af:LowComplexity ; + af:computedIn "MPEG-7" ; + af:dimensions 1 ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PhysicalFeature ; + af:temporal_scale af:Global ; + rdfs:comment "MPEG-7 Log Attack Time feature" ; + rdfs:subClassOf af:TemporalFeature ; + vs:term_status "testing" . + +af:MPEG7SpectralCentroid a owl:Class ; + rdfs:label "MPEG-7 Spectral Centroid", + "MPEG7SpectralCentroid" ; + af:application_domain af:MusicInformationRetrieval ; + af:computation af:DiscreteFourierTransform, + af:Mean ; + af:computational_complexity af:LowComplexity ; + af:computedIn "MPEG-7" ; + af:dimensions 1 ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PerceptualFeature ; + af:temporal_scale af:Global ; + rdfs:comment "MPEG-7 Spectral Centroid feature" ; + rdfs:subClassOf af:FrequencyDomainPhysicalFeature ; + vs:term_status "testing" . + +af:MPEG7TemporalCentroid a owl:Class ; + rdfs:label "MPEG-7 Temporal Centroid", + "MPEG7TemporalCentroid" ; + af:application_domain af:MusicInformationRetrieval ; + af:computation af:Mean, + af:Power, + af:Windowing ; + af:computational_complexity af:LowComplexity ; + af:computedIn "MPEG-7" ; + af:dimensions 1 ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PhysicalFeature ; + af:temporal_scale af:InterFrame ; + rdfs:comment "MPEG-7 Temporal Centroid feature" ; + rdfs:subClassOf af:TemporalFeature ; + vs:term_status "testing" . + +af:Maximum a owl:Class ; + rdfs:label "Maximum" ; + rdfs:subClassOf af:Aggregation . + +af:MelscaleFrequencyCepstralCoefficients a owl:Class ; + rdfs:label "Mel-scale Frequency Cepstral Coefficients", + "MelscaleFrequencyCepstralCoefficients" ; + af:abbreviation "MFCC" ; + af:application_domain af:Several ; + af:computation af:DiscreteCosineTransform, + af:DiscreteFourierTransform, + af:Logarithm, + af:Regression, + af:Windowing ; + af:computational_complexity af:HighComplexity ; + af:dimensions af:ParametrizedDimensions ; + af:psychoacoustic_model true ; + af:semantic_interpretation af:PhysicalFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "Mel-scale Frequency Cepstral Coefficients feature" ; + rdfs:subClassOf af:CepstralFeature ; + vs:term_status "testing" . + +af:Minimum a owl:Class ; + rdfs:label "Minimum" ; + rdfs:subClassOf af:Aggregation . + +af:ModifiedGroupDelay a owl:Class ; + rdfs:label "Modified Group Delay", + "ModifiedGroupDelay" ; + af:application_domain af:SpeechRecognition ; + af:computation af:DiscreteCosineTransform, + af:DiscreteFourierTransform, + af:GroupDelayFunction, + af:LowpassFilter, + af:Windowing ; + af:computational_complexity af:MediumComplexity ; + af:dimensions af:ParametrizedDimensions ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PhysicalFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "Modified Group Delay feature" ; + rdfs:subClassOf af:FrequencyDomainPhysicalFeature ; + vs:term_status "testing" . + +af:MultiresolutionEntropy a owl:Class ; + rdfs:label "Multi-resolution Entropy", + "MultiresolutionEntropy" ; + af:application_domain af:SpeechRecognition ; + af:computation af:DiscreteFourierTransform, + af:Entropy, + af:Normalization, + af:Regression, + af:Windowing ; + af:computational_complexity af:MediumComplexity ; + af:dimensions af:ParametrizedDimensions ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PerceptualFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "Multi-resolution Entropy feature" ; + rdfs:subClassOf af:FrequencyDomainPerceptualFeature ; + vs:term_status "testing" . + +af:NoiseRobustAuditoryFeature a owl:Class ; + rdfs:label "Noise-Robust Auditory Feature", + "NoiseRobustAuditoryFeature" ; + af:application_domain af:EnvironmentalSoundRecognition ; + af:computation af:BandpassFilterBank, + af:DerivationDifference, + af:DiscreteCosineTransform, + af:Logarithm, + af:LowpassFilter, + af:NonLinearWeightingFunction, + af:Windowing ; + af:computational_complexity af:HighComplexity ; + af:dimensions 256 ; + af:psychoacoustic_model true ; + af:semantic_interpretation af:PhysicalFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "Noise-Robust Auditory Feature feature" ; + rdfs:subClassOf af:CepstralFeature ; + vs:term_status "testing" . + +af:PerceptualLinearPrediction a owl:Class ; + rdfs:label "Perceptual Linear Prediction", + "PerceptualLinearPrediction" ; + af:application_domain af:SpeechRecognition ; + af:computation af:AutoregressionLinearPredictionAnalysis, + af:CepstralRecursionFormula, + af:DiscreteCosineTransform, + af:DiscreteFourierTransform, + af:NonLinearWeightingFunction, + af:Regression, + af:Windowing ; + af:computational_complexity af:HighComplexity ; + af:dimensions af:ParametrizedDimensions ; + af:psychoacoustic_model true ; + af:semantic_interpretation af:PhysicalFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "Perceptual Linear Prediction feature" ; + rdfs:subClassOf af:CepstralFeature ; + vs:term_status "testing" . + +af:PhaseSpaceFeatures a owl:Class ; + rdfs:label "Phase Space Features", + "PhaseSpaceFeatures" ; + af:application_domain af:SpeechRecognition ; + af:computation af:PhaseSpaceEmbedding, + af:Windowing ; + af:computational_complexity af:HighComplexity ; + af:dimensions af:ParametrizedDimensions ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PhysicalFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "Phase Space Features feature" ; + rdfs:subClassOf af:PhasespaceFeature ; + vs:term_status "testing" . + +af:Pitch a owl:Class ; + rdfs:label "Pitch" ; + af:application_domain af:Several ; + af:computation af:Autocorrelation, + af:SumWeightedSum, + af:Windowing ; + af:computational_complexity af:LowComplexity ; + af:dimensions 1 ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PerceptualFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "Pitch feature" ; + rdfs:subClassOf af:FrequencyDomainPerceptualFeature ; + vs:term_status "testing" . + +af:PitchHistogram a owl:Class ; + rdfs:label "Pitch Histogram", + "PitchHistogram" ; + af:application_domain af:MusicInformationRetrieval ; + af:computation af:Autocorrelation, + af:RootMeanSquare, + af:Spectralbinning, + af:Windowing ; + af:computational_complexity af:MediumComplexity ; + af:dimensions af:ParametrizedDimensions ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PerceptualFeature ; + af:temporal_scale af:InterFrame ; + rdfs:comment "Pitch Histogram feature" ; + rdfs:subClassOf af:FrequencyDomainPerceptualFeature ; + vs:term_status "testing" . + +af:PitchProfile a owl:Class ; + rdfs:label "Pitch Profile", + "PitchProfile" ; + af:application_domain af:MusicInformationRetrieval ; + af:computation af:ConstantQTransform, + af:RootMeanSquare, + af:Spectralbinning, + af:SumWeightedSum, + af:Windowing ; + af:computational_complexity af:HighComplexity ; + af:dimensions 12 ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PerceptualFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "Pitch Profile feature" ; + rdfs:subClassOf af:FrequencyDomainPerceptualFeature ; + vs:term_status "testing" . + +af:PitchSynchronousZCPA a owl:Class ; + rdfs:label "Pitch Synchronous ZCPA", + "PitchSynchronousZCPA" ; + af:application_domain af:SpeechRecognition ; + af:computation af:Autocorrelation, + af:BandpassFilterBank, + af:Logarithm, + af:RootMeanSquare, + af:Spectralbinning, + af:SumWeightedSum, + af:Windowing ; + af:computational_complexity af:MediumComplexity ; + af:dimensions af:ParametrizedDimensions ; + af:psychoacoustic_model true ; + af:semantic_interpretation af:PhysicalFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "Pitch Synchronous ZCPA feature" ; + rdfs:subClassOf af:TemporalFeature ; + vs:term_status "testing" . + +af:PsychoacousticalPitch a owl:Class ; + rdfs:label "Psychoacoustical Pitch", + "PsychoacousticalPitch" ; + af:application_domain af:Several ; + af:computation af:Autocorrelation, + af:BandpassFilterBank, + af:NonLinearWeightingFunction, + af:RootMeanSquare ; + af:computational_complexity af:HighComplexity ; + af:dimensions af:ParametrizedDimensions ; + af:psychoacoustic_model true ; + af:semantic_interpretation af:PerceptualFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "Psychoacoustical Pitch feature" ; + rdfs:subClassOf af:FrequencyDomainPerceptualFeature ; + vs:term_status "testing" . + +af:PulseMetric a owl:Class ; + rdfs:label "Pulse Metric", + "PulseMetric" ; + af:application_domain af:AudioSegmentation ; + af:computation af:Autocorrelation, + af:BandpassFilterBank, + af:RootMeanSquare, + af:Windowing ; + af:computational_complexity af:MediumComplexity ; + af:dimensions 1 ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PerceptualFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "Pulse Metric feature" ; + rdfs:subClassOf af:ModulationfrequencyFeature ; + vs:term_status "testing" . + +af:RatescalefrequencyFeatures a owl:Class ; + rdfs:label "Rate-scale-frequency Features", + "RatescalefrequencyFeatures" ; + af:application_domain af:EnvironmentalSoundRecognition ; + af:computation af:BandpassFilterBank, + af:DerivationDifference, + af:DiscreteWaveletTransform, + af:LowpassFilter, + af:NonLinearWeightingFunction, + af:PrincipalComponentAnalysis, + af:RootMeanSquare, + af:Windowing ; + af:computational_complexity af:HighComplexity ; + af:dimensions 256 ; + af:psychoacoustic_model true ; + af:semantic_interpretation af:PhysicalFeature ; + af:temporal_scale af:InterFrame ; + rdfs:comment "Rate-scale-frequency Features feature" ; + rdfs:subClassOf af:EigendomainFeature ; + vs:term_status "testing" . + +af:RelativeSpectralPLP a owl:Class ; + rdfs:label "Relative Spectral PLP", + "RelativeSpectralPLP" ; + af:application_domain af:SpeechRecognition ; + af:computation af:AutoregressionLinearPredictionAnalysis, + af:BandpassFilterBank, + af:CepstralRecursionFormula, + af:DiscreteCosineTransform, + af:DiscreteFourierTransform, + af:ExponentialFunction, + af:Logarithm, + af:NonLinearWeightingFunction, + af:Regression, + af:Windowing ; + af:computational_complexity af:HighComplexity ; + af:dimensions af:ParametrizedDimensions ; + af:psychoacoustic_model true ; + af:semantic_interpretation af:PhysicalFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "Relative Spectral PLP feature" ; + rdfs:subClassOf af:CepstralFeature ; + vs:term_status "testing" . + +af:RhythmPatterns a owl:Class ; + rdfs:label "Rhythm Patterns", + "RhythmPatterns" ; + af:application_domain af:MusicInformationRetrieval ; + af:computation af:DiscreteFourierTransform, + af:HarmonicPeakDetection, + af:Logarithm, + af:LowpassFilter, + af:NonLinearWeightingFunction, + af:Regression, + af:Windowing ; + af:computational_complexity af:HighComplexity ; + af:dimensions 80 ; + af:psychoacoustic_model true ; + af:semantic_interpretation af:PhysicalFeature ; + af:temporal_scale af:InterFrame ; + rdfs:comment "Rhythm Patterns feature" ; + rdfs:subClassOf af:ModulationfrequencyFeature ; + vs:term_status "testing" . + +af:Sharpness a owl:Class ; + rdfs:label "Sharpness" ; + af:application_domain af:Several ; + af:computation af:DiscreteFourierTransform, + af:Mean, + af:NonLinearWeightingFunction, + af:Regression, + af:Windowing ; + af:computational_complexity af:MediumComplexity ; + af:dimensions 1 ; + af:psychoacoustic_model true ; + af:semantic_interpretation af:PerceptualFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "Sharpness feature" ; + rdfs:subClassOf af:FrequencyDomainPerceptualFeature ; + vs:term_status "testing" . + +af:ShortTimeEnergy a owl:Class ; + rdfs:label "Short-Time Energy", + "ShortTimeEnergy" ; + af:application_domain af:Several ; + af:computation af:DeviationSumofDifferences, + af:Windowing ; + af:computational_complexity af:LowComplexity ; + af:dimensions 1 ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PhysicalFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "Short-Time Energy feature" ; + rdfs:subClassOf af:TemporalFeature ; + vs:term_status "testing" . + +af:Sone a owl:Class ; + rdfs:label "Sone" ; + af:application_domain af:MusicInformationRetrieval ; + af:computation af:DiscreteFourierTransform, + af:Logarithm, + af:LowpassFilter, + af:NonLinearWeightingFunction, + af:Regression, + af:Windowing ; + af:computational_complexity af:HighComplexity ; + af:dimensions af:ParametrizedDimensions ; + af:psychoacoustic_model true ; + af:semantic_interpretation af:PerceptualFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "Sone feature" ; + rdfs:subClassOf af:FrequencyDomainPerceptualFeature ; + vs:term_status "testing" . + +af:SpectralCenter a owl:Class ; + rdfs:label "Spectral Center", + "SpectralCenter" ; + af:application_domain af:MusicInformationRetrieval ; + af:computation af:DiscreteFourierTransform, + af:EnergySpectralDensity, + af:HarmonicPeakDetection, + af:Windowing ; + af:computational_complexity af:LowComplexity ; + af:dimensions 1 ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PerceptualFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "Spectral Center feature" ; + rdfs:subClassOf af:FrequencyDomainPerceptualFeature ; + vs:term_status "testing" . + +af:SpectralCentroid a owl:Class ; + rdfs:label "Spectral Centroid", + "SpectralCentroid" ; + af:application_domain af:Several ; + af:computation af:DiscreteFourierTransform, + af:Logarithm, + af:Mean, + af:Regression, + af:Windowing ; + af:computational_complexity af:LowComplexity ; + af:dimensions 1 ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PerceptualFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "Spectral Centroid feature" ; + rdfs:subClassOf af:FrequencyDomainPerceptualFeature ; + vs:term_status "testing" . + +af:SpectralCrest a owl:Class ; + rdfs:label "Spectral Crest", + "SpectralCrest" ; + af:application_domain af:Fingerprinting ; + af:computation af:DiscreteFourierTransform, + af:Logarithm, + af:Mean, + af:Regression, + af:SumWeightedSum, + af:Windowing ; + af:computational_complexity af:LowComplexity ; + af:dimensions af:ParametrizedDimensions ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PerceptualFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "Spectral Crest feature" ; + rdfs:subClassOf af:FrequencyDomainPerceptualFeature ; + vs:term_status "testing" . + +af:SpectralDispersion a owl:Class ; + rdfs:label "Spectral Dispersion", + "SpectralDispersion" ; + af:application_domain af:MusicInformationRetrieval ; + af:computation af:DiscreteFourierTransform, + af:EnergySpectralDensity, + af:HarmonicPeakDetection, + af:Median, + af:Windowing ; + af:computational_complexity af:LowComplexity ; + af:dimensions 1 ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PerceptualFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "Spectral Dispersion feature" ; + rdfs:subClassOf af:FrequencyDomainPerceptualFeature ; + vs:term_status "testing" . + +af:SpectralFlatness a owl:Class ; + rdfs:label "Spectral Flatness", + "SpectralFlatness" ; + af:application_domain af:Fingerprinting ; + af:computation af:DiscreteFourierTransform, + af:Logarithm, + af:Mean, + af:Regression, + af:Windowing ; + af:computational_complexity af:MediumComplexity ; + af:dimensions af:ParametrizedDimensions ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PerceptualFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "Spectral Flatness feature" ; + rdfs:subClassOf af:FrequencyDomainPerceptualFeature ; + vs:term_status "testing" . + +af:SpectralFlux a owl:Class ; + rdfs:label "Spectral Flux", + "SpectralFlux" ; + af:abbreviation "SF" ; + af:application_domain af:Several ; + af:computation af:DerivationDifference, + af:DiscreteFourierTransform, + af:RootMeanSquare, + af:Windowing ; + af:computational_complexity af:LowComplexity ; + af:dimensions 1 ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PhysicalFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "Spectral Flux feature" ; + rdfs:subClassOf af:FrequencyDomainPhysicalFeature ; + vs:term_status "testing" . + +af:SpectralPeakStructure a owl:Class ; + rdfs:label "Spectral Peak Structure", + "SpectralPeakStructure" ; + af:application_domain af:MusicInformationRetrieval ; + af:computation af:DerivationDifference, + af:DiscreteFourierTransform, + af:Entropy, + af:LevelCrossingDetector, + af:Spectralbinning, + af:Windowing ; + af:computational_complexity af:MediumComplexity ; + af:dimensions 1 ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PerceptualFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "Spectral Peak Structure feature" ; + rdfs:subClassOf af:FrequencyDomainPerceptualFeature ; + vs:term_status "testing" . + +af:SpectralPeaks a owl:Class ; + rdfs:label "Spectral Peaks", + "SpectralPeaks" ; + af:application_domain af:MusicInformationRetrieval ; + af:computation af:DerivationDifference, + af:DiscreteFourierTransform, + af:SumWeightedSum, + af:Windowing ; + af:computational_complexity af:LowComplexity ; + af:dimensions af:ParametrizedDimensions ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PhysicalFeature ; + af:temporal_scale af:InterFrame ; + rdfs:comment "Spectral Peaks feature" ; + rdfs:subClassOf af:FrequencyDomainPhysicalFeature ; + vs:term_status "testing" . + +af:SpectralRolloff a owl:Class ; + rdfs:label "Spectral Rolloff", + "SpectralRolloff" ; + af:application_domain af:Several ; + af:computation af:DiscreteFourierTransform, + af:PolynomialRootFinding, + af:Windowing ; + af:computational_complexity af:LowComplexity ; + af:dimensions 1 ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PerceptualFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "Spectral Rolloff feature" ; + rdfs:subClassOf af:FrequencyDomainPerceptualFeature ; + vs:term_status "testing" . + +af:SpectralSlope a owl:Class ; + rdfs:label "Spectral Slope", + "SpectralSlope" ; + af:application_domain af:Several ; + af:computation af:DiscreteFourierTransform, + af:PeakDetection, + af:Windowing ; + af:computational_complexity af:LowComplexity ; + af:dimensions 4 ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PhysicalFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "Spectral Slope feature" ; + rdfs:subClassOf af:FrequencyDomainPhysicalFeature ; + vs:term_status "testing" . + +af:SubbandEnergyRatio a owl:Class ; + rdfs:label "Subband Energy Ratio", + "SubbandEnergyRatio" ; + af:application_domain af:Several ; + af:computation af:DiscreteFourierTransform, + af:EnergySpectralDensity, + af:Normalization, + af:Regression, + af:Windowing ; + af:computational_complexity af:LowComplexity ; + af:dimensions af:ParametrizedDimensions ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PhysicalFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "Subband Energy Ratio feature" ; + rdfs:subClassOf af:FrequencyDomainPhysicalFeature ; + vs:term_status "testing" . + +af:SubbandSpectralFlux a owl:Class ; + rdfs:label "Subband Spectral Flux", + "SubbandSpectralFlux" ; + af:application_domain af:EnvironmentalSoundRecognition ; + af:computation af:DerivationDifference, + af:DiscreteFourierTransform, + af:Logarithm, + af:Mean, + af:Normalization, + af:Regression, + af:Windowing ; + af:computational_complexity af:MediumComplexity ; + af:dimensions 8 ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PerceptualFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "Subband Spectral Flux feature" ; + rdfs:subClassOf af:FrequencyDomainPerceptualFeature ; + vs:term_status "testing" . + +af:Volume a owl:Class ; + rdfs:label "Volume" ; + af:application_domain af:Several ; + af:computation af:Power, + af:Windowing ; + af:computational_complexity af:LowComplexity ; + af:dimensions 1 ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PhysicalFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "Volume feature" ; + rdfs:subClassOf af:TemporalFeature ; + vs:term_status "testing" . + +af:ZeroCrossingPeakAmplitudes a owl:Class ; + rdfs:label "Zero Crossing Peak Amplitudes", + "ZeroCrossingPeakAmplitudes" ; + af:application_domain af:SpeechRecognition ; + af:computation af:BandpassFilterBank, + af:Logarithm, + af:RootMeanSquare, + af:Spectralbinning, + af:Windowing ; + af:computational_complexity af:MediumComplexity ; + af:dimensions af:ParametrizedDimensions ; + af:psychoacoustic_model true ; + af:semantic_interpretation af:PhysicalFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "Zero Crossing Peak Amplitudes feature" ; + rdfs:subClassOf af:TemporalFeature ; + vs:term_status "testing" . + +af:ZeroCrossingRate a owl:Class ; + rdfs:label "Zero Crossing Rate", + "ZeroCrossingRate" ; + af:abbreviation "ZCR" ; + af:application_domain af:Several ; + af:computation af:Spectralbinning, + af:Windowing ; + af:computational_complexity af:LowComplexity ; + af:dimensions 1 ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PhysicalFeature ; + af:temporal_scale af:IntraFrame ; + rdfs:comment "Zero Crossing Rate feature" ; + rdfs:subClassOf af:TemporalFeature ; + vs:term_status "testing" . + +af:application_domain a rdf:Property ; + rdfs:comment "application domain property" ; + rdfs:range af:ApplicationDomain ; + vs:term_status "testing" . + +af:computational_complexity a rdf:Property ; + rdfs:range af:ComputationalComplexity ; + vs:term_status "testing" . + +af:dimensions a rdf:Property ; + rdfs:range af:ParametrizedDimensions, + xsd:Integer . + +af:psychoacoustic_model a rdf:Property ; + rdfs:range xsd:Boolean ; + vs:term_status "testing" . + +af:semantic_interpretation a rdf:Property ; + vs:term_status "testing" . + +af:temporal_scale a rdf:Property ; + rdfs:range af:TemporalScale . + +vs:term_status a owl:AnnotationProperty . + +af:AdaptiveTimeFrequencyTransform a owl:Class ; + rdfs:label "Adaptive Time Frequency Transform", + "Adaptive Time-Frequency Transform", + "AdaptiveTimeFrequencyTransform" ; + af:application_domain af:MusicInformationRetrieval ; + af:computation af:AdaptiveTimeFrequencyTransform, + af:Spectralbinning ; + af:computational_complexity af:MediumComplexity ; + af:dimensions 42 ; + af:psychoacoustic_model false ; + af:semantic_interpretation af:PhysicalFeature ; + af:temporal_scale af:Global ; + rdfs:comment "Adaptive Time-Frequency Transform feature" ; + rdfs:subClassOf af:FrequencyDomainPhysicalFeature, + af:Transformation ; + vs:term_status "testing" . + +af:ConstantQTransform a owl:Class ; + rdfs:label "Constant Q Transform" ; + rdfs:subClassOf af:Transformation . + +af:DeviationSumofDifferences a owl:Class ; + rdfs:label "Deviation, Sum of Differences" ; + rdfs:subClassOf af:Aggregation . + +af:GroupDelayFunction a owl:Class ; + rdfs:label "Group Delay Function" ; + rdfs:subClassOf af:Filter . + +af:Histogram a owl:Class ; + rdfs:label "Histogram" ; + rdfs:subClassOf af:Aggregation . + +af:IndependentComponentAnalysis a owl:Class ; + rdfs:label "Independent Component Analysis" ; + rdfs:subClassOf af:Transformation . + +af:ModulatedComplexLappedTransform a owl:Class ; + rdfs:label "Modulated Complex Lapped Transform" ; + rdfs:subClassOf af:Transformation . + +af:PeakDetection a owl:Class ; + rdfs:label "Peak Detection" ; + rdfs:subClassOf af:Aggregation . + +af:Percentile a owl:Class ; + rdfs:label "Percentile" ; + rdfs:subClassOf af:Aggregation . + +af:PhaseSpaceEmbedding a owl:Class ; + rdfs:label "Phase Space Embedding" ; + rdfs:subClassOf af:Transformation . + +af:PhasespaceFeature a owl:Class ; + rdfs:subClassOf af:Feature . + +af:PolynomialRootFinding a owl:Class ; + rdfs:label "Polynomial Root Finding" ; + rdfs:subClassOf af:Aggregation . + +af:Signal a owl:Class . + +af:SingularValueDecomposition a owl:Class ; + rdfs:label "Singular Value Decomposition" ; + rdfs:subClassOf af:Transformation . + +af:CombFilterBank a owl:Class ; + rdfs:label "Comb Filter (Bank)" ; + rdfs:subClassOf af:Filter . + +af:CrossCorrelation a owl:Class ; + rdfs:label "Cross-Correlation" ; + rdfs:subClassOf af:Transformation . + +af:ExponentialFunction a owl:Class ; + rdfs:label "Exponential Function" ; + rdfs:subClassOf af:Filter . + +af:FrequencyFeature a owl:Class ; + rdfs:subClassOf af:Feature . + +af:PrincipalComponentAnalysis a owl:Class ; + rdfs:label "Principal Component Analysis" ; + rdfs:subClassOf af:Transformation . + +af:CepstralRecursionFormula a owl:Class ; + rdfs:label "Cepstral Recursion Formula" ; + rdfs:subClassOf af:Filter . + +af:EigendomainFeature a owl:Class ; + rdfs:subClassOf af:Feature . + +af:Entropy a owl:Class ; + rdfs:label "Entropy" ; + rdfs:subClassOf af:Aggregation . + +af:Fingerprinting a owl:Class ; + rdfs:subClassOf af:ApplicationDomain . + +af:Global a owl:Class ; + rdfs:subClassOf af:TemporalScale . + +af:HarmonicPeakDetection a owl:Class ; + rdfs:label "Harmonic Peak Detection" ; + rdfs:subClassOf af:Aggregation . + +af:MathematicalOperation a owl:Class . + +af:Power a owl:Class ; + rdfs:label "Power" ; + rdfs:subClassOf af:Aggregation . + +af:ComputationalComplexity a owl:Class . + +af:TemporalScale a owl:Class . + +af:AudioSegmentation a owl:Class ; + rdfs:subClassOf af:ApplicationDomain . + +af:DiscreteWaveletTransform a owl:Class ; + rdfs:label "Discrete Wavelet Transform" ; + rdfs:subClassOf af:Transformation . + +af:AutoregressionLinearPredictionAnalysis a owl:Class ; + rdfs:label "Autoregression (Linear Prediction Analysis)" ; + rdfs:subClassOf af:Filter . + +af:EnergySpectralDensity a owl:Class ; + rdfs:label "Energy Spectral Density" ; + rdfs:subClassOf af:Filter . + +af:EnvironmentalSoundRecognition a owl:Class ; + rdfs:subClassOf af:ApplicationDomain . + +af:Normalization a owl:Class ; + rdfs:label "Normalization" ; + rdfs:subClassOf af:Filter . + +af:ApplicationDomain a owl:Class . + +af:CepstralFeature a owl:Class ; + rdfs:subClassOf af:Feature . + +af:Median a owl:Class ; + rdfs:label "Median" ; + rdfs:subClassOf af:Aggregation . + +af:DiscreteCosineTransform a owl:Class ; + rdfs:label "Discrete Cosine Transform" ; + rdfs:subClassOf af:Transformation . + +af:Feature a owl:Class ; + owl:subClassOf af:Signal . + +af:DerivationDifference a owl:Class ; + rdfs:label "Derivation, Difference" ; + rdfs:subClassOf af:Filter . + +af:LevelCrossingDetector a owl:Class ; + rdfs:label "Level Crossing Detector" ; + rdfs:subClassOf af:Aggregation . + +af:NonLinearWeightingFunction a owl:Class ; + rdfs:label "(Non-) Linear Weighting Function" ; + rdfs:subClassOf af:Filter . + +af:FrequencyDomainPhysicalFeature a owl:Class ; + rdfs:subClassOf af:FrequencyFeature ; + owl:equivalentClass af:PhysicalFeature . + +af:TemporalFeature a owl:Class ; + rdfs:subClassOf af:Feature . + +af:Mean a owl:Class ; + rdfs:label "Mean" ; + rdfs:subClassOf af:Aggregation . + +af:SpeechRecognition a owl:Class ; + rdfs:subClassOf af:ApplicationDomain . + +af:SumWeightedSum a owl:Class ; + rdfs:label "Sum, Weighted Sum" ; + rdfs:subClassOf af:Aggregation . + +af:LowpassFilter a owl:Class ; + rdfs:label "Low-pass Filter" ; + rdfs:subClassOf af:Filter . + +af:ModulationfrequencyFeature a owl:Class ; + rdfs:subClassOf af:Feature . + +af:Spectralbinning a owl:Class ; + rdfs:label "Spectral binning" ; + rdfs:subClassOf af:Aggregation . + +af:Filter a owl:Class ; + rdfs:subClassOf af:MathematicalOperation . + +af:Transformation a owl:Class ; + rdfs:subClassOf af:MathematicalOperation . + +af:BandpassFilterBank a owl:Class ; + rdfs:label "Band-pass Filter (Bank)", + "Band-pass Filter Bank" ; + rdfs:subClassOf af:Filter, + af:Transformation . + +af:Autocorrelation a owl:Class ; + rdfs:label "Autocorrelation" ; + rdfs:subClassOf af:Transformation . + +af:InterFrame a owl:Class ; + rdfs:subClassOf af:TemporalScale . + +af:Aggregation a owl:Class ; + rdfs:subClassOf af:MathematicalOperation . + +af:HighComplexity a owl:Class ; + rdfs:subClassOf af:ComputationalComplexity . + +af:Regression a owl:Class ; + rdfs:label "Regression" ; + rdfs:subClassOf af:Aggregation . + +af:Several a owl:Class ; + rdfs:subClassOf af:ApplicationDomain . + +af:RootMeanSquare a owl:Class ; + rdfs:label "Root Mean Square" ; + rdfs:subClassOf af:Aggregation . + +af:LowComplexity a owl:Class ; + rdfs:subClassOf af:ComputationalComplexity . + +af:Logarithm a owl:Class ; + rdfs:label "Logarithm" ; + rdfs:subClassOf af:Filter . + +af:ParametrizedDimensions a owl:Class . + +af:MusicInformationRetrieval a owl:Class ; + rdfs:subClassOf af:ApplicationDomain . + +af:FrequencyDomainPerceptualFeature a owl:Class ; + rdfs:subClassOf af:FrequencyFeature ; + owl:equivalentClass af:PerceptualFeature . + +af:MediumComplexity a owl:Class ; + rdfs:subClassOf af:ComputationalComplexity . + +af:PhysicalFeature a owl:Class ; + rdfs:subClassOf af:Feature . + +af:DiscreteFourierTransform a owl:Class ; + rdfs:label "Discrete Fourier Transform" ; + rdfs:subClassOf af:Transformation . + +af:PerceptualFeature a owl:Class ; + rdfs:subClassOf af:Feature . + +af:IntraFrame a owl:Class ; + rdfs:subClassOf af:TemporalScale . + +af:Windowing a owl:Class ; + rdfs:label "Windowing" ; + rdfs:subClassOf af:Filter . +
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/baseOnto.rdf Mon Feb 25 14:40:54 2013 +0000 @@ -0,0 +1,1808 @@ +<?xml version="1.0" encoding="UTF-8"?> +<rdf:RDF + xmlns:af="http://sovarr.c4dm.eecs.qmul.ac.uk/features/" + xmlns:dc="http://purl.org/dc/elements/1.1/" + xmlns:owl="http://www.w3.org/2002/07/owl#" + xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" + xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" + xmlns:vs="http://www.w3.org/2003/06/sw-vocab-status/ns#" +> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/JointAcousticandModuluationFrequency"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/HighComplexity"/> + <af:dimensions rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ParametrizedDimensions"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/RootMeanSquare"/> + <af:computation 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<rdfs:label>Joint Acoustic and Moduluation Frequency</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PhysicalFeature"/> + <rdfs:comment>Joint Acoustic and Moduluation Frequency feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/dimensions"> + <rdfs:range rdf:resource="http://www.w3.org/2001/XMLSchema#Integer"/> + <rdfs:range rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ParametrizedDimensions"/> + <rdf:type rdf:resource="http://www.w3.org/1999/02/22-rdf-syntax-ns#Property"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SingularValueDecomposition"> + <rdfs:label>Singular Value Decomposition</rdfs:label> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Transformation"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + 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rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MediumComplexity"/> + <af:dimensions rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">1</af:dimensions> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Logarithm"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Mean"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Regression"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteFourierTransform"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FrequencyDomainPerceptualFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">true</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Several"/> + <rdfs:label>MPEG-7 Audio Spectrum Centroid</rdfs:label> + <rdfs:label>MPEG7AudioSpectrumCentroid</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PerceptualFeature"/> + <rdfs:comment>MPEG-7 Audio Spectrum Centroid feature</rdfs:comment> + <af:computedIn>MPEG-7</af:computedIn> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MPEG7AudioHarmonicity"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MediumComplexity"/> + <af:dimensions rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">2</af:dimensions> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SumWeightedSum"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Autocorrelation"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FrequencyDomainPerceptualFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Several"/> + <rdfs:label>MPEG7AudioHarmonicity</rdfs:label> + <rdfs:label>MPEG-7 Audio Harmonicity</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PerceptualFeature"/> + <rdfs:comment>MPEG-7 Audio Harmonicity feature</rdfs:comment> + <af:computedIn>MPEG-7</af:computedIn> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/TemporalFeature"> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Feature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DaubechiesWaveletCoefficientHistogram"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MediumComplexity"/> + <af:dimensions rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">28</af:dimensions> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Spectralbinning"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteWaveletTransform"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FrequencyDomainPhysicalFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MusicInformationRetrieval"/> + <rdfs:label>Daubechies Wavelet Coefficient Histogram</rdfs:label> + <rdfs:label>DaubechiesWaveletCoefficientHistogram</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PhysicalFeature"/> + <rdfs:comment>Daubechies Wavelet Coefficient Histogram feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Percentile"> + <rdfs:label>Percentile</rdfs:label> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Aggregation"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MPEG7AudioWaveform"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LowComplexity"/> + <af:dimensions rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">2</af:dimensions> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SumWeightedSum"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Histogram"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/TemporalFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <rdfs:label>MPEG-7 Audio Waveform</rdfs:label> + <rdfs:label>MPEG7AudioWaveform</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PhysicalFeature"/> + <rdfs:comment>MPEG-7 Audio Waveform feature</rdfs:comment> + <af:computedIn>MPEG-7</af:computedIn> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/psychoacoustic_model"> + <vs:term_status>testing</vs:term_status> + <rdfs:range rdf:resource="http://www.w3.org/2001/XMLSchema#Boolean"/> + <rdf:type rdf:resource="http://www.w3.org/1999/02/22-rdf-syntax-ns#Property"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Inharmonicity"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MediumComplexity"/> + <af:dimensions rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">1</af:dimensions> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Median"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Autocorrelation"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LevelCrossingDetector"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FrequencyDomainPerceptualFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MusicInformationRetrieval"/> + <rdfs:label>Inharmonicity</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PerceptualFeature"/> + <rdfs:comment>Inharmonicity feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AdaptiveTimeFrequencyTransform"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MediumComplexity"/> + <af:dimensions rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">42</af:dimensions> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Spectralbinning"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AdaptiveTimeFrequencyTransform"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FrequencyDomainPhysicalFeature"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Transformation"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Global"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MusicInformationRetrieval"/> + <rdfs:label>Adaptive Time Frequency Transform</rdfs:label> + <rdfs:label>Adaptive Time-Frequency Transform</rdfs:label> + <rdfs:label>AdaptiveTimeFrequencyTransform</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PhysicalFeature"/> + <rdfs:comment>Adaptive Time-Frequency Transform feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MultiresolutionEntropy"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MediumComplexity"/> + <af:dimensions rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ParametrizedDimensions"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Entropy"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Normalization"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Regression"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteFourierTransform"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FrequencyDomainPerceptualFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpeechRecognition"/> + <rdfs:label>Multi-resolution Entropy</rdfs:label> + <rdfs:label>MultiresolutionEntropy</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PerceptualFeature"/> + <rdfs:comment>Multi-resolution Entropy feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PhaseSpaceFeatures"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/HighComplexity"/> + <af:dimensions rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ParametrizedDimensions"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PhaseSpaceEmbedding"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PhasespaceFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpeechRecognition"/> + <rdfs:label>PhaseSpaceFeatures</rdfs:label> + <rdfs:label>Phase Space Features</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PhysicalFeature"/> + <rdfs:comment>Phase Space Features feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MPEG7HarmonicSpectralDeviation"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MediumComplexity"/> + <af:dimensions rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">1</af:dimensions> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LevelCrossingDetector"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteFourierTransform"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Logarithm"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Mean"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Median"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FrequencyDomainPerceptualFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MusicInformationRetrieval"/> + <rdfs:label>MPEG7HarmonicSpectralDeviation</rdfs:label> + <rdfs:label>MPEG-7 Harmonic Spectral Deviation</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PerceptualFeature"/> + <rdfs:comment>MPEG-7 Harmonic Spectral Deviation feature</rdfs:comment> + <af:computedIn>MPEG-7</af:computedIn> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralCrest"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LowComplexity"/> + <af:dimensions rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ParametrizedDimensions"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Regression"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Logarithm"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Mean"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteFourierTransform"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SumWeightedSum"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FrequencyDomainPerceptualFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Fingerprinting"/> + <rdfs:label>Spectral Crest</rdfs:label> + <rdfs:label>SpectralCrest</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PerceptualFeature"/> + <rdfs:comment>Spectral Crest feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LinearPredictionCepstralCoefficients"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MediumComplexity"/> + <af:dimensions rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ParametrizedDimensions"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/CepstralRecursionFormula"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/BandpassFilterBank"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AutoregressionLinearPredictionAnalysis"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/CepstralFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpeechRecognition"/> + <af:abbreviation>LPCC</af:abbreviation> + <rdfs:label>Linear Prediction Cepstral Coefficients</rdfs:label> + <rdfs:label>LinearPredictionCepstralCoefficients</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PhysicalFeature"/> + <rdfs:comment>Linear Prediction Cepstral Coefficients feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ModulatedComplexLappedTransform"> + <rdfs:label>Modulated Complex Lapped Transform</rdfs:label> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Transformation"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PhysicalFeature"> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Feature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/HarmonicConcentration"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MediumComplexity"/> + <af:dimensions rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">1</af:dimensions> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/EnergySpectralDensity"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/RootMeanSquare"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LevelCrossingDetector"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteFourierTransform"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FrequencyDomainPerceptualFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MusicInformationRetrieval"/> + <rdfs:label>Harmonic Concentration</rdfs:label> + <rdfs:label>HarmonicConcentration</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PerceptualFeature"/> + <rdfs:comment>Harmonic Concentration feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ModulationfrequencyFeature"> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Feature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpeechRecognition"> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ApplicationDomain"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/HarmonicDerivate"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MediumComplexity"/> + <af:dimensions rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ParametrizedDimensions"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DerivationDifference"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Logarithm"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteFourierTransform"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FrequencyDomainPerceptualFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MusicInformationRetrieval"/> + <rdfs:label>Harmonic Derivate</rdfs:label> + <rdfs:label>HarmonicDerivate</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PerceptualFeature"/> + <rdfs:comment>Harmonic Derivate feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PrincipalComponentAnalysis"> + <rdfs:label>Principal Component Analysis</rdfs:label> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Transformation"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AuditoryFilterBankTemporalEnvelopes"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MediumComplexity"/> + <af:dimensions rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">62</af:dimensions> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/BandpassFilterBank"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/EnergySpectralDensity"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/RootMeanSquare"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ModulationfrequencyFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">true</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MusicInformationRetrieval"/> + <rdfs:label>AuditoryFilterBankTemporalEnvelopes</rdfs:label> + <rdfs:label>Auditory Filter Bank Temporal Envelopes</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PhysicalFeature"/> + <rdfs:comment>Auditory Filter Bank Temporal Envelopes feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Mean"> + <rdfs:label>Mean</rdfs:label> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Aggregation"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/RootMeanSquare"> + <rdfs:label>Root Mean Square</rdfs:label> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Aggregation"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Autocorrelation"> + <rdfs:label>Autocorrelation</rdfs:label> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Transformation"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Maximum"> + <rdfs:label>Maximum</rdfs:label> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Aggregation"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LineSpectralFrequencies"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MediumComplexity"/> + <af:dimensions rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ParametrizedDimensions"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AutoregressionLinearPredictionAnalysis"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Percentile"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FrequencyDomainPhysicalFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Several"/> + <rdfs:label>LineSpectralFrequencies</rdfs:label> + <rdfs:label>Line Spectral Frequencies</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PhysicalFeature"/> + <rdfs:comment>Line Spectral Frequencies feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralCentroid"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LowComplexity"/> + <af:dimensions rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">1</af:dimensions> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Logarithm"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Mean"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Regression"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteFourierTransform"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FrequencyDomainPerceptualFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Several"/> + <rdfs:label>Spectral Centroid</rdfs:label> + <rdfs:label>SpectralCentroid</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PerceptualFeature"/> + <rdfs:comment>Spectral Centroid feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteWaveletTransform"> + <rdfs:label>Discrete Wavelet Transform</rdfs:label> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Transformation"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PulseMetric"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MediumComplexity"/> + <af:dimensions rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">1</af:dimensions> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/BandpassFilterBank"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/RootMeanSquare"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Autocorrelation"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ModulationfrequencyFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioSegmentation"/> + <rdfs:label>PulseMetric</rdfs:label> + <rdfs:label>Pulse Metric</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PerceptualFeature"/> + <rdfs:comment>Pulse Metric feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralFlux"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LowComplexity"/> + <af:dimensions rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">1</af:dimensions> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DerivationDifference"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/RootMeanSquare"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteFourierTransform"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FrequencyDomainPhysicalFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Several"/> + <af:abbreviation>SF</af:abbreviation> + <rdfs:label>SpectralFlux</rdfs:label> + <rdfs:label>Spectral Flux</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PhysicalFeature"/> + <rdfs:comment>Spectral Flux feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/HarmonicPeakDetection"> + <rdfs:label>Harmonic Peak Detection</rdfs:label> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Aggregation"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ChromaCENSFeatures"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MediumComplexity"/> + <af:dimensions rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">12</af:dimensions> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/BandpassFilterBank"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/RootMeanSquare"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LowpassFilter"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Normalization"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FrequencyDomainPerceptualFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MusicInformationRetrieval"/> + <rdfs:label>ChromaCENSFeatures</rdfs:label> + <rdfs:label>Chroma CENS Features</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PerceptualFeature"/> + <rdfs:comment>Chroma CENS Features feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Regression"> + <rdfs:label>Regression</rdfs:label> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Aggregation"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FrequencyDomainPerceptualFeature"> + <owl:equivalentClass rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PerceptualFeature"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FrequencyFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/BeatTracker"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/HighComplexity"/> + <af:dimensions rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">1</af:dimensions> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/RootMeanSquare"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DerivationDifference"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/CombFilterBank"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/BandpassFilterBank"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LowpassFilter"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ModulationfrequencyFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/InterFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MusicInformationRetrieval"/> + <rdfs:label>Beat Tracker</rdfs:label> + <rdfs:label>BeatTracker</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PerceptualFeature"/> + <rdfs:comment>Beat Tracker feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ExponentialFunction"> + <rdfs:label>Exponential Function</rdfs:label> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Filter"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Global"> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/TemporalScale"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PsychoacousticalPitch"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/HighComplexity"/> + <af:dimensions rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ParametrizedDimensions"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/BandpassFilterBank"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/RootMeanSquare"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Autocorrelation"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/NonLinearWeightingFunction"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FrequencyDomainPerceptualFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">true</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Several"/> + <rdfs:label>PsychoacousticalPitch</rdfs:label> + <rdfs:label>Psychoacoustical Pitch</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PerceptualFeature"/> + <rdfs:comment>Psychoacoustical Pitch feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DWPTbasedRhythmFeature"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MediumComplexity"/> + <af:dimensions rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ParametrizedDimensions"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/RootMeanSquare"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Autocorrelation"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteWaveletTransform"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Spectralbinning"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ModulationfrequencyFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/InterFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MusicInformationRetrieval"/> + <rdfs:label>DWPT-based Rhythm Feature</rdfs:label> + <rdfs:label>DWPTbasedRhythmFeature</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PerceptualFeature"/> + <rdfs:comment>DWPT-based Rhythm Feature feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Spectralbinning"> + <rdfs:label>Spectral binning</rdfs:label> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Aggregation"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/HarmonicCoefficient"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LowComplexity"/> + <af:dimensions rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">1</af:dimensions> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SumWeightedSum"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Autocorrelation"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FrequencyDomainPerceptualFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioSegmentation"/> + <rdfs:label>HarmonicCoefficient</rdfs:label> + <rdfs:label>Harmonic Coefficient</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PerceptualFeature"/> + <rdfs:comment>Harmonic Coefficient feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ApplicationDomain"> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PitchProfile"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/HighComplexity"/> + <af:dimensions rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">12</af:dimensions> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ConstantQTransform"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/RootMeanSquare"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SumWeightedSum"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Spectralbinning"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FrequencyDomainPerceptualFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MusicInformationRetrieval"/> + <rdfs:label>PitchProfile</rdfs:label> + <rdfs:label>Pitch Profile</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PerceptualFeature"/> + <rdfs:comment>Pitch Profile feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PitchHistogram"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MediumComplexity"/> + <af:dimensions rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ParametrizedDimensions"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/RootMeanSquare"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Autocorrelation"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Spectralbinning"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FrequencyDomainPerceptualFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/InterFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MusicInformationRetrieval"/> + <rdfs:label>Pitch Histogram</rdfs:label> + <rdfs:label>PitchHistogram</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PerceptualFeature"/> + <rdfs:comment>Pitch Histogram feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SumWeightedSum"> + <rdfs:label>Sum, Weighted Sum</rdfs:label> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Aggregation"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/HarmonicProminence"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MediumComplexity"/> + <af:dimensions rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">1</af:dimensions> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Autocorrelation"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LevelCrossingDetector"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FrequencyDomainPerceptualFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/EnvironmentalSoundRecognition"/> + <rdfs:label>HarmonicProminence</rdfs:label> + <rdfs:label>Harmonic Prominence</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PerceptualFeature"/> + <rdfs:comment>Harmonic Prominence feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/CepstralRecursionFormula"> + <rdfs:label>Cepstral Recursion Formula</rdfs:label> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Filter"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ShortTimeEnergy"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LowComplexity"/> + <af:dimensions rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">1</af:dimensions> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DeviationSumofDifferences"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/TemporalFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Several"/> + <rdfs:label>ShortTimeEnergy</rdfs:label> + <rdfs:label>Short-Time Energy</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PhysicalFeature"/> + <rdfs:comment>Short-Time Energy feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IndependentComponentAnalysis"> + <rdfs:label>Independent Component Analysis</rdfs:label> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Transformation"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LinearPredictionZCR"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LowComplexity"/> + <af:dimensions rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">1</af:dimensions> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Spectralbinning"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AutoregressionLinearPredictionAnalysis"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/TemporalFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpeechRecognition"/> + <rdfs:label>Linear Prediction ZCR</rdfs:label> + <rdfs:label>LinearPredictionZCR</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PhysicalFeature"/> + <rdfs:comment>Linear Prediction ZCR feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/EigendomainFeature"> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Feature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MPEG7SpectralCentroid"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LowComplexity"/> + <af:dimensions rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">1</af:dimensions> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Mean"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteFourierTransform"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FrequencyDomainPhysicalFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Global"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MusicInformationRetrieval"/> + <rdfs:label>MPEG-7 Spectral Centroid</rdfs:label> + <rdfs:label>MPEG7SpectralCentroid</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PerceptualFeature"/> + <rdfs:comment>MPEG-7 Spectral Centroid feature</rdfs:comment> + <af:computedIn>MPEG-7</af:computedIn> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Feature"> + <owl:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Signal"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PerceptualFeature"> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Feature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DistortionDiscriminantAnalysis"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/HighComplexity"/> + <af:dimensions rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">64</af:dimensions> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ModulatedComplexLappedTransform"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Logarithm"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PrincipalComponentAnalysis"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/EigendomainFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/InterFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Fingerprinting"/> + <rdfs:label>Distortion Discriminant Analysis</rdfs:label> + <rdfs:label>DistortionDiscriminantAnalysis</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PhysicalFeature"/> + <rdfs:comment>Distortion Discriminant Analysis feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MusicInformationRetrieval"> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ApplicationDomain"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PerceptualLinearPrediction"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/HighComplexity"/> + <af:dimensions rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ParametrizedDimensions"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/NonLinearWeightingFunction"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Regression"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/CepstralRecursionFormula"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteCosineTransform"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AutoregressionLinearPredictionAnalysis"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteFourierTransform"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/CepstralFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">true</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpeechRecognition"/> + <rdfs:label>Perceptual Linear Prediction</rdfs:label> + <rdfs:label>PerceptualLinearPrediction</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PhysicalFeature"/> + <rdfs:comment>Perceptual Linear Prediction feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MPEG7LogAttackTime"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LowComplexity"/> + <af:dimensions rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">1</af:dimensions> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Logarithm"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/RootMeanSquare"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Power"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/TemporalFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Global"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MusicInformationRetrieval"/> + <rdfs:label>MPEG7LogAttackTime</rdfs:label> + <rdfs:label>MPEG-7 Log Attack Time</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PhysicalFeature"/> + <rdfs:comment>MPEG-7 Log Attack Time feature</rdfs:comment> + <af:computedIn>MPEG-7</af:computedIn> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about=""> + <dc:description>This is a base ontology for the Audio Features engineering process collected from literature</dc:description> + <dc:title>Audio Features Base Ontology</dc:title> + <owl:versionInfo>Version 0.1</owl:versionInfo> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Ontology"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioSegmentation"> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ApplicationDomain"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Transformation"> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MathematicalOperation"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralPeaks"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LowComplexity"/> + <af:dimensions rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ParametrizedDimensions"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DerivationDifference"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SumWeightedSum"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteFourierTransform"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FrequencyDomainPhysicalFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/InterFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MusicInformationRetrieval"/> + <rdfs:label>SpectralPeaks</rdfs:label> + <rdfs:label>Spectral Peaks</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PhysicalFeature"/> + <rdfs:comment>Spectral Peaks feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/temporal_scale"> + <rdfs:range rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/TemporalScale"/> + <rdf:type rdf:resource="http://www.w3.org/1999/02/22-rdf-syntax-ns#Property"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PhaseSpaceEmbedding"> + <rdfs:label>Phase Space Embedding</rdfs:label> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Transformation"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MPEG7AudioFundamentalFrequency"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LowComplexity"/> + <af:dimensions rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">2</af:dimensions> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SumWeightedSum"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Autocorrelation"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FrequencyDomainPerceptualFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Several"/> + <rdfs:label>MPEG-7 Audio Fundamental Frequency</rdfs:label> + <rdfs:label>MPEG7AudioFundamentalFrequency</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PerceptualFeature"/> + <rdfs:comment>MPEG-7 Audio Fundamental Frequency feature</rdfs:comment> + <af:computedIn>MPEG-7</af:computedIn> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ModifiedGroupDelay"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MediumComplexity"/> + <af:dimensions rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ParametrizedDimensions"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteCosineTransform"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LowpassFilter"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteFourierTransform"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/GroupDelayFunction"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FrequencyDomainPhysicalFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpeechRecognition"/> + <rdfs:label>Modified Group Delay</rdfs:label> + <rdfs:label>ModifiedGroupDelay</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PhysicalFeature"/> + <rdfs:comment>Modified Group Delay feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LowpassFilter"> + <rdfs:label>Low-pass Filter</rdfs:label> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Filter"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Median"> + <rdfs:label>Median</rdfs:label> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Aggregation"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/BeatHistogram"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MediumComplexity"/> + <af:dimensions rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">6</af:dimensions> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/RootMeanSquare"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Autocorrelation"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Spectralbinning"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteWaveletTransform"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LowpassFilter"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ModulationfrequencyFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/InterFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MusicInformationRetrieval"/> + <rdfs:label>BeatHistogram</rdfs:label> + <rdfs:label>Beat Histogram</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PerceptualFeature"/> + <rdfs:comment>Beat Histogram feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PhasespaceFeature"> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Feature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PolynomialRootFinding"> + <rdfs:label>Polynomial Root Finding</rdfs:label> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Aggregation"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralFlatness"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MediumComplexity"/> + <af:dimensions rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ParametrizedDimensions"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Logarithm"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Mean"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Regression"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteFourierTransform"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FrequencyDomainPerceptualFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Fingerprinting"/> + <rdfs:label>SpectralFlatness</rdfs:label> + <rdfs:label>Spectral Flatness</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PerceptualFeature"/> + <rdfs:comment>Spectral Flatness feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/InterFrame"> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/TemporalScale"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Logarithm"> + <rdfs:label>Logarithm</rdfs:label> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Filter"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PitchSynchronousZCPA"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MediumComplexity"/> + <af:dimensions rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ParametrizedDimensions"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/RootMeanSquare"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Autocorrelation"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Spectralbinning"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Logarithm"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/BandpassFilterBank"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SumWeightedSum"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/TemporalFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">true</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpeechRecognition"/> + <rdfs:label>Pitch Synchronous ZCPA</rdfs:label> + <rdfs:label>PitchSynchronousZCPA</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PhysicalFeature"/> + <rdfs:comment>Pitch Synchronous ZCPA feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"> + <rdfs:label>Windowing</rdfs:label> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Filter"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/computational_complexity"> + <vs:term_status>testing</vs:term_status> + <rdfs:range rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ComputationalComplexity"/> + <rdf:type rdf:resource="http://www.w3.org/1999/02/22-rdf-syntax-ns#Property"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Several"> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ApplicationDomain"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MPEG7AudioSpectrumBasis"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/HighComplexity"/> + <af:dimensions rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ParametrizedDimensions"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SingularValueDecomposition"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Normalization"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IndependentComponentAnalysis"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Logarithm"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Regression"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteFourierTransform"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/EigendomainFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/InterFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/EnvironmentalSoundRecognition"/> + <rdfs:label>MPEG7AudioSpectrumBasis</rdfs:label> + <rdfs:label>MPEG-7 Audio Spectrum Basis</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PhysicalFeature"/> + <rdfs:comment>MPEG-7 Audio Spectrum Basis feature</rdfs:comment> + <af:computedIn>MPEG-7</af:computedIn> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MPEG7AudioSpectrumSpread"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MediumComplexity"/> + <af:dimensions rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">1</af:dimensions> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Logarithm"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Median"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Regression"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteFourierTransform"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FrequencyDomainPerceptualFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">true</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Several"/> + <rdfs:label>MPEG7AudioSpectrumSpread</rdfs:label> + <rdfs:label>MPEG-7 Audio Spectrum Spread</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PerceptualFeature"/> + <rdfs:comment>MPEG-7 Audio Spectrum Spread feature</rdfs:comment> + <af:computedIn>MPEG-7</af:computedIn> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SubbandSpectralFlux"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MediumComplexity"/> + <af:dimensions rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">8</af:dimensions> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Mean"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DerivationDifference"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Normalization"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Logarithm"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Regression"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteFourierTransform"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FrequencyDomainPerceptualFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/EnvironmentalSoundRecognition"/> + <rdfs:label>SubbandSpectralFlux</rdfs:label> + <rdfs:label>Subband Spectral Flux</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PerceptualFeature"/> + <rdfs:comment>Subband Spectral Flux feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralRolloff"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LowComplexity"/> + <af:dimensions rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">1</af:dimensions> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PolynomialRootFinding"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteFourierTransform"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FrequencyDomainPerceptualFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Several"/> + <rdfs:label>Spectral Rolloff</rdfs:label> + <rdfs:label>SpectralRolloff</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PerceptualFeature"/> + <rdfs:comment>Spectral Rolloff feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://www.w3.org/2003/06/sw-vocab-status/ns#term_status"> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#AnnotationProperty"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/HarmonicEnergyEntropy"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MediumComplexity"/> + <af:dimensions rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">1</af:dimensions> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Entropy"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LevelCrossingDetector"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteFourierTransform"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FrequencyDomainPerceptualFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MusicInformationRetrieval"/> + <rdfs:label>HarmonicEnergyEntropy</rdfs:label> + <rdfs:label>Harmonic Energy Entropy</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PerceptualFeature"/> + <rdfs:comment>Harmonic Energy Entropy feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Filter"> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MathematicalOperation"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SubbandEnergyRatio"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LowComplexity"/> + <af:dimensions rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ParametrizedDimensions"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/EnergySpectralDensity"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Normalization"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Regression"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteFourierTransform"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FrequencyDomainPhysicalFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Several"/> + <rdfs:label>SubbandEnergyRatio</rdfs:label> + <rdfs:label>Subband Energy Ratio</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PhysicalFeature"/> + <rdfs:comment>Subband Energy Ratio feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AutocorrelationMFCCs"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/HighComplexity"/> + <af:dimensions rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ParametrizedDimensions"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Autocorrelation"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteCosineTransform"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Logarithm"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Regression"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LowpassFilter"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteFourierTransform"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/CepstralFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">true</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpeechRecognition"/> + <rdfs:label>Autocorrelation MFCCs</rdfs:label> + <rdfs:label>AutocorrelationMFCCs</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PhysicalFeature"/> + <rdfs:comment>Autocorrelation MFCCs feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/RhythmPatterns"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/HighComplexity"/> + <af:dimensions rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">80</af:dimensions> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/NonLinearWeightingFunction"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/HarmonicPeakDetection"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Logarithm"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Regression"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LowpassFilter"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteFourierTransform"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ModulationfrequencyFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">true</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/InterFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MusicInformationRetrieval"/> + <rdfs:label>Rhythm Patterns</rdfs:label> + <rdfs:label>RhythmPatterns</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PhysicalFeature"/> + <rdfs:comment>Rhythm Patterns feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MediumComplexity"> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ComputationalComplexity"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Entropy"> + <rdfs:label>Entropy</rdfs:label> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Aggregation"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ZeroCrossingRate"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LowComplexity"/> + <af:dimensions rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">1</af:dimensions> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Spectralbinning"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/TemporalFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Several"/> + <af:abbreviation>ZCR</af:abbreviation> + <rdfs:label>ZeroCrossingRate</rdfs:label> + <rdfs:label>Zero Crossing Rate</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PhysicalFeature"/> + <rdfs:comment>Zero Crossing Rate feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralPeakStructure"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MediumComplexity"/> + <af:dimensions rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">1</af:dimensions> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DerivationDifference"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Spectralbinning"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LevelCrossingDetector"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Entropy"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteFourierTransform"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FrequencyDomainPerceptualFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MusicInformationRetrieval"/> + <rdfs:label>SpectralPeakStructure</rdfs:label> + <rdfs:label>Spectral Peak Structure</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PerceptualFeature"/> + <rdfs:comment>Spectral Peak Structure feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/TemporalScale"> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntegralLoudness"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/HighComplexity"/> + <af:dimensions rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">1</af:dimensions> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ExponentialFunction"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/RootMeanSquare"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/NonLinearWeightingFunction"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Logarithm"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteFourierTransform"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FrequencyDomainPerceptualFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">true</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MusicInformationRetrieval"/> + <rdfs:label>Integral Loudness</rdfs:label> + <rdfs:label>IntegralLoudness</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PerceptualFeature"/> + <rdfs:comment>Integral Loudness feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/CombFilterBank"> + <rdfs:label>Comb Filter (Bank)</rdfs:label> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Filter"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/application_domain"> + <vs:term_status>testing</vs:term_status> + <rdfs:range rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ApplicationDomain"/> + <rdfs:comment>application domain property</rdfs:comment> + <rdf:type rdf:resource="http://www.w3.org/1999/02/22-rdf-syntax-ns#Property"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Fingerprinting"> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ApplicationDomain"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Minimum"> + <rdfs:label>Minimum</rdfs:label> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Aggregation"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/CyclicBeatSpectrum"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/HighComplexity"/> + <af:dimensions rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ParametrizedDimensions"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/RootMeanSquare"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DerivationDifference"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/CombFilterBank"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LowpassFilter"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteFourierTransform"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ModulationfrequencyFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/InterFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MusicInformationRetrieval"/> + <rdfs:label>Cyclic Beat Spectrum</rdfs:label> + <rdfs:label>CyclicBeatSpectrum</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PerceptualFeature"/> + <rdfs:comment>Cyclic Beat Spectrum feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/BandpassFilterBank"> + <rdfs:label>Band-pass Filter (Bank)</rdfs:label> + <rdfs:label>Band-pass Filter Bank</rdfs:label> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Filter"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Transformation"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralCenter"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LowComplexity"/> + <af:dimensions rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">1</af:dimensions> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/EnergySpectralDensity"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteFourierTransform"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/HarmonicPeakDetection"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FrequencyDomainPerceptualFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MusicInformationRetrieval"/> + <rdfs:label>SpectralCenter</rdfs:label> + <rdfs:label>Spectral Center</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PerceptualFeature"/> + <rdfs:comment>Spectral Center feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/CepstralFeature"> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Feature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/NonLinearWeightingFunction"> + <rdfs:label>(Non-) Linear Weighting Function</rdfs:label> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Filter"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Normalization"> + <rdfs:label>Normalization</rdfs:label> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Filter"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/EnvironmentalSoundRecognition"> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ApplicationDomain"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ConstantQTransform"> + <rdfs:label>Constant Q Transform</rdfs:label> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Transformation"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/NoiseRobustAuditoryFeature"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/HighComplexity"/> + <af:dimensions rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">256</af:dimensions> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/NonLinearWeightingFunction"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DerivationDifference"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteCosineTransform"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Logarithm"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/BandpassFilterBank"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LowpassFilter"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/CepstralFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">true</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/EnvironmentalSoundRecognition"/> + <rdfs:label>NoiseRobustAuditoryFeature</rdfs:label> + <rdfs:label>Noise-Robust Auditory Feature</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PhysicalFeature"/> + <rdfs:comment>Noise-Robust Auditory Feature feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AutoregressionLinearPredictionAnalysis"> + <rdfs:label>Autoregression (Linear Prediction Analysis)</rdfs:label> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Filter"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MPEG7TemporalCentroid"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LowComplexity"/> + <af:dimensions rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">1</af:dimensions> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Mean"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Power"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/TemporalFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/InterFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MusicInformationRetrieval"/> + <rdfs:label>MPEG-7 Temporal Centroid</rdfs:label> + <rdfs:label>MPEG7TemporalCentroid</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PhysicalFeature"/> + <rdfs:comment>MPEG-7 Temporal Centroid feature</rdfs:comment> + <af:computedIn>MPEG-7</af:computedIn> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Bandwidth"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LowComplexity"/> + <af:dimensions rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">1</af:dimensions> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Logarithm"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Median"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Regression"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteFourierTransform"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FrequencyDomainPerceptualFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Several"/> + <rdfs:label>Bandwidth</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PerceptualFeature"/> + <rdfs:comment>Bandwidth feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AmplitudeDescriptor"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LowComplexity"/> + <af:dimensions rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">9</af:dimensions> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Spectralbinning"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Mean"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Median"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/TemporalFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/EnvironmentalSoundRecognition"/> + <rdfs:label>AmplitudeDescriptor</rdfs:label> + <rdfs:label>Amplitude Descriptor</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PhysicalFeature"/> + <rdfs:comment>Amplitude Descriptor feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Sharpness"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MediumComplexity"/> + <af:dimensions rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">1</af:dimensions> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/NonLinearWeightingFunction"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Mean"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Regression"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteFourierTransform"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FrequencyDomainPerceptualFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">true</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Several"/> + <rdfs:label>Sharpness</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PerceptualFeature"/> + <rdfs:comment>Sharpness feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FrequencyDomainPhysicalFeature"> + <owl:equivalentClass rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PhysicalFeature"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FrequencyFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Sone"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/HighComplexity"/> + <af:dimensions rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ParametrizedDimensions"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/NonLinearWeightingFunction"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Logarithm"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Regression"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LowpassFilter"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteFourierTransform"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FrequencyDomainPerceptualFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">true</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MusicInformationRetrieval"/> + <rdfs:label>Sone</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PerceptualFeature"/> + <rdfs:comment>Sone feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/HighComplexity"> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ComputationalComplexity"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Volume"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LowComplexity"/> + <af:dimensions rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">1</af:dimensions> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Power"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/TemporalFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Several"/> + <rdfs:label>Volume</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PhysicalFeature"/> + <rdfs:comment>Volume feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LowComplexity"> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ComputationalComplexity"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Power"> + <rdfs:label>Power</rdfs:label> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Aggregation"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralSlope"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LowComplexity"/> + <af:dimensions rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">4</af:dimensions> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PeakDetection"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteFourierTransform"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FrequencyDomainPhysicalFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Several"/> + <rdfs:label>Spectral Slope</rdfs:label> + <rdfs:label>SpectralSlope</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PhysicalFeature"/> + <rdfs:comment>Spectral Slope feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ParametrizedDimensions"> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/BarkscaleFrequencyCepstralCoefficients"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/HighComplexity"/> + <af:dimensions rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ParametrizedDimensions"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Logarithm"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteCosineTransform"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Regression"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteFourierTransform"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/CepstralFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">true</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Several"/> + <rdfs:label>BarkscaleFrequencyCepstralCoefficients</rdfs:label> + <rdfs:label>Bark-scale Frequency Cepstral Coefficients</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PhysicalFeature"/> + <rdfs:comment>Bark-scale Frequency Cepstral Coefficients feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralDispersion"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LowComplexity"/> + <af:dimensions rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">1</af:dimensions> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/EnergySpectralDensity"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Median"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteFourierTransform"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/HarmonicPeakDetection"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FrequencyDomainPerceptualFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MusicInformationRetrieval"/> + <rdfs:label>Spectral Dispersion</rdfs:label> + <rdfs:label>SpectralDispersion</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PerceptualFeature"/> + <rdfs:comment>Spectral Dispersion feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Aggregation"> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MathematicalOperation"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MPEG7HarmonicSpectralVariation"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MediumComplexity"/> + <af:dimensions rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">1</af:dimensions> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/CrossCorrelation"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LevelCrossingDetector"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteFourierTransform"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FrequencyDomainPerceptualFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MusicInformationRetrieval"/> + <rdfs:label>MPEG7HarmonicSpectralVariation</rdfs:label> + <rdfs:label>MPEG-7 Harmonic Spectral Variation</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PerceptualFeature"/> + <rdfs:comment>MPEG-7 Harmonic Spectral Variation feature</rdfs:comment> + <af:computedIn>MPEG-7</af:computedIn> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ZeroCrossingPeakAmplitudes"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MediumComplexity"/> + <af:dimensions rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ParametrizedDimensions"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/BandpassFilterBank"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Spectralbinning"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Logarithm"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/RootMeanSquare"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/TemporalFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">true</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpeechRecognition"/> + <rdfs:label>Zero Crossing Peak Amplitudes</rdfs:label> + <rdfs:label>ZeroCrossingPeakAmplitudes</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PhysicalFeature"/> + <rdfs:comment>Zero Crossing Peak Amplitudes feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ComputationalComplexity"> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteFourierTransform"> + <rdfs:label>Discrete Fourier Transform</rdfs:label> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Transformation"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/RelativeSpectralPLP"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/HighComplexity"/> + <af:dimensions rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ParametrizedDimensions"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/NonLinearWeightingFunction"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AutoregressionLinearPredictionAnalysis"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ExponentialFunction"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/CepstralRecursionFormula"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteCosineTransform"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Logarithm"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/BandpassFilterBank"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Regression"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteFourierTransform"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/CepstralFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">true</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpeechRecognition"/> + <rdfs:label>Relative Spectral PLP</rdfs:label> + <rdfs:label>RelativeSpectralPLP</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PhysicalFeature"/> + <rdfs:comment>Relative Spectral PLP feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/4HzModulationEnergy"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MediumComplexity"/> + <af:dimensions rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">1</af:dimensions> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/RootMeanSquare"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/EnergySpectralDensity"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Normalization"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/BandpassFilterBank"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Regression"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteFourierTransform"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ModulationfrequencyFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">true</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/InterFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioSegmentation"/> + <rdfs:label>4 Hz Modulation Energy</rdfs:label> + <rdfs:label>4HzModulationEnergy</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PhysicalFeature"/> + <rdfs:comment>4 Hz Modulation Energy feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/EnergySpectralDensity"> + <rdfs:label>Energy Spectral Density</rdfs:label> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Filter"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PeakDetection"> + <rdfs:label>Peak Detection</rdfs:label> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Aggregation"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/4HzModulationHarmonicCoefficients"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MediumComplexity"/> + <af:dimensions rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">1</af:dimensions> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/BandpassFilterBank"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteCosineTransform"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SumWeightedSum"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Autocorrelation"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ModulationfrequencyFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/InterFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioSegmentation"/> + <rdfs:label>4 Hz Modulation Harmonic Coefficients</rdfs:label> + <rdfs:label>4HzModulationHarmonicCoefficients</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PhysicalFeature"/> + <rdfs:comment>4 Hz Modulation Harmonic Coefficients feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MathematicalOperation"> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Pitch"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LowComplexity"/> + <af:dimensions rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">1</af:dimensions> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SumWeightedSum"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Autocorrelation"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FrequencyDomainPerceptualFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Several"/> + <rdfs:label>Pitch</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PerceptualFeature"/> + <rdfs:comment>Pitch feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteCosineTransform"> + <rdfs:label>Discrete Cosine Transform</rdfs:label> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Transformation"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Histogram"> + <rdfs:label>Histogram</rdfs:label> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Aggregation"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LinearPredictiveCoding"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LowComplexity"/> + <af:dimensions rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ParametrizedDimensions"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/BandpassFilterBank"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AutoregressionLinearPredictionAnalysis"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteFourierTransform"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FrequencyDomainPhysicalFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpeechRecognition"/> + <af:abbreviation>LPC</af:abbreviation> + <rdfs:label>LinearPredictiveCoding</rdfs:label> + <rdfs:label>Linear Predictive Coding</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PhysicalFeature"/> + <rdfs:comment>Linear Predictive Coding feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/BandPeriodicity"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MediumComplexity"/> + <af:dimensions rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">4</af:dimensions> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/BandpassFilterBank"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/RootMeanSquare"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SumWeightedSum"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Autocorrelation"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ModulationfrequencyFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/InterFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AudioSegmentation"/> + <rdfs:label>BandPeriodicity</rdfs:label> + <rdfs:label>Band Periodicity</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PerceptualFeature"/> + <rdfs:comment>Band Periodicity feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MelscaleFrequencyCepstralCoefficients"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/HighComplexity"/> + <af:dimensions rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ParametrizedDimensions"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Logarithm"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteCosineTransform"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Regression"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteFourierTransform"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/CepstralFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">true</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Several"/> + <af:abbreviation>MFCC</af:abbreviation> + <rdfs:label>Mel-scale Frequency Cepstral Coefficients</rdfs:label> + <rdfs:label>MelscaleFrequencyCepstralCoefficients</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PhysicalFeature"/> + <rdfs:comment>Mel-scale Frequency Cepstral Coefficients feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/CrossCorrelation"> + <rdfs:label>Cross-Correlation</rdfs:label> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Transformation"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/BeatSpectrum"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/HighComplexity"/> + <af:dimensions rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ParametrizedDimensions"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Autocorrelation"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Logarithm"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/CrossCorrelation"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LowpassFilter"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteFourierTransform"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ModulationfrequencyFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/InterFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MusicInformationRetrieval"/> + <rdfs:label>BeatSpectrum</rdfs:label> + <rdfs:label>Beat Spectrum</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PerceptualFeature"/> + <rdfs:comment>Beat Spectrum feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DeviationSumofDifferences"> + <rdfs:label>Deviation, Sum of Differences</rdfs:label> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Aggregation"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/GroupDelayFunction"> + <rdfs:label>Group Delay Function</rdfs:label> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Filter"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LevelCrossingDetector"> + <rdfs:label>Level Crossing Detector</rdfs:label> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Aggregation"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MPEG7HarmonicSpectralSpread"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MediumComplexity"/> + <af:dimensions rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">1</af:dimensions> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Median"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LevelCrossingDetector"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteFourierTransform"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FrequencyDomainPerceptualFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MusicInformationRetrieval"/> + <rdfs:label>MPEG7HarmonicSpectralSpread</rdfs:label> + <rdfs:label>MPEG-7 Harmonic Spectral Spread</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PerceptualFeature"/> + <rdfs:comment>MPEG-7 Harmonic Spectral Spread feature</rdfs:comment> + <af:computedIn>MPEG-7</af:computedIn> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Chromagram"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MediumComplexity"/> + <af:dimensions rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">12</af:dimensions> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/RootMeanSquare"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Logarithm"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteFourierTransform"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FrequencyDomainPerceptualFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MusicInformationRetrieval"/> + <rdfs:label>Chromagram</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PerceptualFeature"/> + <rdfs:comment>Chromagram feature</rdfs:comment> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MPEG7HarmonicSpectralCentroid"> + <af:computational_complexity rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MediumComplexity"/> + <af:dimensions rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">1</af:dimensions> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Mean"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LevelCrossingDetector"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DiscreteFourierTransform"/> + <af:computation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Windowing"/> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FrequencyDomainPerceptualFeature"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <af:psychoacoustic_model rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean">false</af:psychoacoustic_model> + <af:temporal_scale rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"/> + <af:application_domain rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MusicInformationRetrieval"/> + <rdfs:label>MPEG-7 Harmonic Spectral Centroid</rdfs:label> + <rdfs:label>MPEG7HarmonicSpectralCentroid</rdfs:label> + <af:semantic_interpretation rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PerceptualFeature"/> + <rdfs:comment>MPEG-7 Harmonic Spectral Centroid feature</rdfs:comment> + <af:computedIn>MPEG-7</af:computedIn> + <vs:term_status>testing</vs:term_status> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Signal"> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntraFrame"> + <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/TemporalScale"/> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + </rdf:Description> +</rdf:RDF>
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/fca/fca.py Mon Feb 25 14:40:54 2013 +0000 @@ -0,0 +1,97 @@ + +#formal concept analysis + +import rdflib +from rdflib import plugin, OWL, URIRef +from rdflib.graph import Graph +from rdflib.namespace import Namespace + +plugin.register( + 'sparql', rdflib.query.Processor, + 'rdfextras.sparql.processor', 'Processor') +plugin.register( + 'sparql', rdflib.query.Result, + 'rdfextras.sparql.query', 'SPARQLQueryResult') + +graph = Graph() +graph.parse('/Users/alo/MusicOntology/features/featuresCatalogue.rdf') + + +execfile('/Users/alo/MusicOntology/features/fca/writeHTML.py') + +# conceptual scaling of many-valued feature attributes: complexity - low, medium, high +# must be transformed into one-valued context: complexity-low, complexity-medium, complexity-high +atmatrix = [] + +#which attributes/categories to include +cat = ["appdomain", "complexity", "domain", "level", "temporalscale", "dimensions"] +catdict = {} + +for name in cat: + catdict[name] = [] + +atcols = [] +atrows = [] + +#traverse all items of type OWL.Class and then for each class the attributes in the dictionary and enumerate all the possible values + +res = graph.query( + """ + SELECT DISTINCT ?feature (COUNT(?tool) as ?tcount) + WHERE { + ?feature rdfs:subClassOf ?ob . + ?feature af:computedIn ?tool + } + GROUP BY ?feature + HAVING(COUNT(?tool)>1) + ORDER BY ?feature + """, + initNs=dict( + af=Namespace("http://sovarr.c4dm.eecs.qmul.ac.uk/features/")) +) + +for ns, value in graph.namespaces(): + if ns == 'local': + local = value + + +for it in res: + atrows.append(it[0]) + for su, pr, ob in graph.triples((URIRef(local+it[0]), None, None)): + col = pr.split('/')[-1] + if cat.count(col) != 0: + if catdict[col].count(ob) == 0: + atcols.append(col+"-"+ob) + catdict[col].append(ob) + + + +atrows.sort() +atcols.sort() + +#construct the matrix +for i in range(len(atrows)): + atrow = [] + for j in range(len(atcols)): + atrow.append(0) + atmatrix.append(atrow) + + +for ns, value in graph.namespaces(): + if ns == 'local': + local = value + +index = 0 +for feature in atrows: + for s, p, o in graph.triples((URIRef(local+feature), None, None)): + col = p.split('/')[-1] + if cat.count(col) != 0: + atmatrix[index][atcols.index(col+"-"+o)] = 1 + index += 1 + +writeHTML('subset.html', atmatrix, atcols, atrows) +writeWikiTable('subset.txt', atmatrix, atcols, atrows) + +writeCXT('subset.cxt', atmatrix, atcols, atrows) +#writeFIMI('atmatrix.fimi', atmatrix, atcols, atrows) +os.system("fcastone -bc "+path+name+".cxt "+path+name+".dot")
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/fca/fcaDotGen.py Mon Feb 25 14:40:54 2013 +0000 @@ -0,0 +1,150 @@ +import rdflib, os +from rdflib import plugin, OWL, URIRef, RDF, RDFS, Literal +from rdflib.graph import Graph +from rdflib.namespace import Namespace + +plugin.register( + 'sparql', rdflib.query.Processor, + 'rdfextras.sparql.processor', 'Processor') +plugin.register( + 'sparql', rdflib.query.Result, + 'rdfextras.sparql.query', 'SPARQLQueryResult') + +afuri = "http://sovarr.c4dm.eecs.qmul.ac.uk/features/" +cataloguePath = '/Users/alo/MusicOntology/features/af-catalogue.rdf' + +graph = Graph() +graph.parse(cataloguePath) + +execfile('/Users/alo/MusicOntology/features/fca/writeHTML.py') + +def getFeaturesByTool( name ): + qry = 'SELECT DISTINCT ?feature WHERE { ?x af:computedIn "' + name + '" . ?x af:feature ?feature} ORDER BY ?feature' + + return graph.query(qry, + initNs=dict( + af=Namespace(afuri)) + ) + +def getBaseFeatures(): + features = [] + ns = URIRef(u'http://sovarr.c4dm.eecs.qmul.ac.uk/features/computedIn') + for su in graph.subjects(RDF.type, OWL.Class): + count = sum(1 for _ in graph.objects(su,ns)) + if count > 1: + features.append(su.split('/')[-1]) + + return features.sort() + +def getTools(): + return graph.query( + """SELECT DISTINCT ?tool + WHERE { + ?x local:computedIn ?tool . + ?x local:feature ?feature + } + ORDER BY ?tool""", + initNs=dict( + af=Namespace(afuri)) + ) + +def constructMatrix( name, path ): + rows = [] + columns = [] + matrix = [] + + cat = ["appdomain", "complexity", "domain", "level", "temporalscale", "dimensions"] + catdict = {} + + for nm in cat: + catdict[nm] = [] + + for ns, value in graph.namespaces(): + if ns == 'local': + local = value + + for it in getFeaturesByTool(name): + rows.append(it[0]) + for su, pr, ob in graph.triples((URIRef(local+it[0]), None, None)): + col = pr.split('/')[-1] + if cat.count(col) != 0: + if catdict[col].count(ob) == 0: + columns.append(col+"-"+ob) + catdict[col].append(ob) + + rows.sort() + columns.sort() + + for i in range(len(rows)): + row = [] + for j in range(len(columns)): + row.append(0) + matrix.append(row) + + index = 0 + for feature in rows: + for s, p, o in graph.triples((URIRef(local+feature), None, None)): + col = p.split('/')[-1] + if cat.count(col) != 0: + matrix[index][columns.index(col+"-"+o)] = 1 + + index += 1 + + writeCXT(path+name+'.cxt', matrix, columns, rows) + print ("wrote cxt data to "+path+name+".cxt") + name = name.replace(' ', '\ ') + os.system("fcastone -bc "+path+name+".cxt "+path+name+".dot") + +def constructBaseMatrix( name, path ): + rows = [] + columns = [] + matrix = [] + + cat = ["domain", "level", "temporalscale", "dimensions", "output", "tag"] + catdict = {} + + for nm in cat: + catdict[nm] = [] + + for ns, value in graph.namespaces(): + if ns == 'af': + local = value + + features = [] + ns = URIRef(u'http://sovarr.c4dm.eecs.qmul.ac.uk/features/computedIn') + for su in graph.subjects(RDF.type, OWL.Class): + count = sum(1 for _ in graph.objects(su,ns)) + if count > 1: + features.append(su.split('/')[-1]) + + for it in features: + rows.append(it) + for su, pr, ob in graph.triples((URIRef(local+it), None, None)): + col = pr.split('/')[-1] + if cat.count(col) != 0: + if catdict[col].count(ob) == 0: + columns.append(ob.replace(' ', '-')+"-"+col.replace(' ', '-')) + catdict[col].append(ob) + + rows.sort() + columns.sort() + + for i in range(len(rows)): + row = [] + for j in range(len(columns)): + row.append(0) + matrix.append(row) + + index = 0 + for feature in rows: + for s, p, o in graph.triples((URIRef(local+feature), None, None)): + col = p.split('/')[-1] + if cat.count(col) != 0: + matrix[index][columns.index(o.replace(' ', '-')+"-"+col.replace(' ', '-'))] = 1 + + index += 1 + + writeCXT(path+name+'.cxt', matrix, columns, rows) + print ("wrote cxt data to "+path+name+".cxt") + name = name.replace(' ', '\ ') + os.system("fcastone -bc "+path+name+".cxt "+path+name+".dot")
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/fca/featureCompareMatrices.py Mon Feb 25 14:40:54 2013 +0000 @@ -0,0 +1,111 @@ +#formal concept analysis + +import rdflib +from rdflib import plugin, OWL, URIRef +from rdflib.graph import Graph +from rdflib.namespace import Namespace + +execfile('/Users/alo/MusicOntology/features/fca/writeHTML.py') + +plugin.register( + 'sparql', rdflib.query.Processor, + 'rdfextras.sparql.processor', 'Processor') +plugin.register( + 'sparql', rdflib.query.Result, + 'rdfextras.sparql.query', 'SPARQLQueryResult') + +graph = Graph() +graph.parse('/Users/alo/MusicOntology/features/featuresCatalogue.rdf') + +tools = [] + +res = graph.query( + """SELECT DISTINCT ?tool + WHERE { + ?x local:computedIn ?tool . + ?x local:feature ?feature + } + ORDER BY ?tool""", + initNs=dict( + local=Namespace("http://sovarr.c4dm.eecs.qmul.ac.uk/features/")) +) + +for it in res: + tools.append(it[0]) + +tools.sort() + +features = [] + +for s, p, o in graph.triples((None, None, OWL.Class)): + features.append(s.split('/')[-1]) + +features.sort() + +for ns, value in graph.namespaces(): + if ns == 'local': + local = value + +similarity = {} + +for feature in features: + mtrx = [] + for i in range(len(tools)): + row = [] + for j in range(len(tools)): + row.append(0) + mtrx.append(row) + similarity[feature] = mtrx + for s, p, o in graph.triples((URIRef(local+feature), URIRef(local+'computedIn'), None)): + if tools.count(o) != 0: + similarity[feature][tools.index(o)][tools.index(o)] = 1 + + +html = '' +for feature in features: + count = 0 + for i in range(len(similarity[feature])): + count += similarity[feature][i].count(1) + if count > 1: + html += '<div>' + html += feature + '<br>' + html += writeHTML('', similarity[feature], tools, tools) + html += '</div>' + +path = 'similarityMatrices.html' +file = open(path, 'w') +file.write(html) +file.close() + + +wiki = '' +for feature in features: + count = 0 + for i in range(len(similarity[feature])): + count += similarity[feature][i].count(1) + if count > 1: + wiki += '<div>\n' + wiki += '====' + feature + '====\n' + wiki += writeWikiTable('', similarity[feature], tools, tools) + wiki += '</div>\n' + +path = 'similarityMatricesWiki.txt' +file = open(path, 'w') +file.write(wiki) +file.close() + +latex = '' +for feature in features: + count = 0 + for i in range(len(similarity[feature])): + count += similarity[feature][i].count(1) + if count > 1: + latex += '\n' + latex += '{\large \\bfseries ' + feature + '}\n' + latex += writeLatexTable('', similarity[feature], tools, tools) + latex += '\n' + +path = 'similarityMatricesLatex.txt' +file = open(path, 'w') +file.write(latex) +file.close()
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/fca/featureToolMatrix.py Mon Feb 25 14:40:54 2013 +0000 @@ -0,0 +1,89 @@ +#formal concept analysis + +import rdflib +from rdflib import plugin, OWL +from rdflib.graph import Graph +from rdflib.namespace import Namespace + +execfile('/Users/alo/MusicOntology/features/fca/writeHTML.py') + +plugin.register( + 'sparql', rdflib.query.Processor, + 'rdfextras.sparql.processor', 'Processor') +plugin.register( + 'sparql', rdflib.query.Result, + 'rdfextras.sparql.query', 'SPARQLQueryResult') + +graph = Graph() +graph.parse('/Users/alo/MusicOntology/features/featuresCatalogue.rdf') + +res = graph.query( + """SELECT DISTINCT ?tool + WHERE { + ?x local:computedIn ?tool . + ?x local:feature ?feature + } + ORDER BY ?tool""", + initNs=dict( + local=Namespace("http://sovarr.c4dm.eecs.qmul.ac.uk/features/")) +) + +cols = [] + +for it in res: + cols.append(it[0]) + +res = graph.query( + """SELECT DISTINCT ?feature + WHERE { + ?x local:computedIn ?tool . + ?x local:feature ?feature + } + ORDER BY ?feature""", + initNs=dict( + local=Namespace("http://sovarr.c4dm.eecs.qmul.ac.uk/features/")) +) + +rows = [] + +for it in res: + rows.append(it[0]) + +colmap = {} + +for i in range(len(cols)): + it = cols[i] + colmap[it] = i + +rowmap = {} + +for i in range(len(rows)): + it = rows[i] + rowmap[it] = i + +res = graph.query( + """SELECT DISTINCT ?feature ?tool + WHERE { + ?x local:computedIn ?tool . + ?x local:feature ?feature + } + ORDER BY ?feature""", + initNs=dict( + local=Namespace("http://sovarr.c4dm.eecs.qmul.ac.uk/features/"))) + +afmatrix = [] + +for i in range(len(rows)): + row = [] + for j in range(len(cols)): + row.append(0) + afmatrix.append(row) + +for it in res: + afmatrix[rowmap[it[0]]][colmap[it[1]]] = 1 + + +#writeHTML('afmatrix.html', afmatrix, cols, rows ) +#writeWikiTable('featureToolWiki.txt', afmatrix, cols, rows ) +writeLatexTable('featureToolLatex.txt', afmatrix, cols, rows) +
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/fca/formalConceptAnalysis.py Mon Feb 25 14:40:54 2013 +0000 @@ -0,0 +1,76 @@ +#formal concept analysis + +import rdflib +from rdflib import plugin, OWL, URIRef +from rdflib.graph import Graph +from rdflib.namespace import Namespace + +execfile('/Users/alo/MusicOntology/features/fca/writeHTML.py') + +plugin.register( + 'sparql', rdflib.query.Processor, + 'rdfextras.sparql.processor', 'Processor') +plugin.register( + 'sparql', rdflib.query.Result, + 'rdfextras.sparql.query', 'SPARQLQueryResult') + +graph = Graph() +graph.parse('/Users/alo/MusicOntology/features/featuresCatalogue.rdf') + +# conceptual scaling of many-valued feature attributes: complexity - low, medium, high +# must be transformed into one-valued context: complexity-low, complexity-medium, complexity-high +atmatrix = [] + +#which attributes/categories to include +cat = ["appdomain", "complexity", "computation", "dimensions", "domain", "level", "temporalscale", "computedIn", "tag"] +catdict = {} + +for name in cat: + catdict[name] = [] + +atcols = [] +atrows = [] + +#traverse all items of type OWL.Class and then for each class the attributes in the dictionary and enumerate all the possible values +for s, p, o in graph.triples((None, None, OWL.Class)): + row = s.split('/')[-1] + if atrows.count(row) == 0: + atrows.append(row) + for su, pr, ob in graph.triples((s, None, None)): + col = pr.split('/')[-1] + if cat.count(col) != 0: + if catdict[col].count(ob) == 0: + atcols.append(col+"-"+ob) + catdict[col].append(ob) + + +atrows.sort() +atcols.sort() + +#construct the matrix +for i in range(len(atrows)): + atrow = [] + for j in range(len(atcols)): + atrow.append(0) + atmatrix.append(atrow) + + +for ns, value in graph.namespaces(): + if ns == 'local': + local = value + +index = 0 +for feature in atrows: + for s, p, o in graph.triples((URIRef(local+feature), None, None)): + col = p.split('/')[-1] + if cat.count(col) != 0: + atmatrix[index][atcols.index(col+"-"+o)] = 1 + index += 1 + +#writeHTML('atmatrix.html', atmatrix, atcols, atrows) +#writeWikiTable('fcamatrixWiki.txt', atmatrix, atcols, atrows) + +#writeCXT('atmatrix.cxt', atmatrix, atcols, atrows) +writeFIMI('atmatrix.fimi', atmatrix, atcols, atrows) + +
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/fca/run.py Mon Feb 25 14:40:54 2013 +0000 @@ -0,0 +1,9 @@ +import os, fnmatch + +basedir = '/Users/alo/MusicOntology/features/' +rdfdir = basedir + 'rdf/' +fcadir = basedir + 'fcadata/' + +for name in os.listdir(rdfdir): + if fnmatch.fnmatch(name, '*.rdf'): + constructMatrix( name.replace('af-', '').replace('.rdf', ''), fcadir ) \ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/fca/writeFCA.py Mon Feb 25 14:40:54 2013 +0000 @@ -0,0 +1,25 @@ +def writeCTX( path, matrix, cols, rows ): + ctx = "B\n\n" + len(rows) + "\n" + len(cols) + "\n\n" + + for it in columns: + ctx += it + "\n" + + for it in columns: + ctx += it + "\n" + + ctx += "\n" + + for i in range(len(rows)): + for j in range(len(columns)): + if matrix[i][j] == 1: + ctx += "X" + else: + html += "." + html += "\n" + + if path != '': + file = open(path, 'w') + file.write(ctx) + file.close() + + return ctx \ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/fca/writeHTML.py Mon Feb 25 14:40:54 2013 +0000 @@ -0,0 +1,131 @@ +def writeHTML(path, matrix, columns, rows): + html = "<table border=1><tr><th></th>" + + for it in columns: + html += "<th>" + it + "</th>" + + html += "</tr>" + + for i in range(len(rows)): + html += "<tr><td>" + rows[i] + "</td>" + for j in range(len(columns)): + if matrix[i][j] == 1: + html += "<td>x</td>" + else: + html += "<td></td>" + html += "</tr>" + + html += "</table>" + + if path != '': + file = open(path, 'w') + file.write(html) + file.close() + + return html + + +def writeWikiTable(path, matrix, columns, rows): + wiki = "{| class='wikitable' \n" + + wiki += ("! align='left'| \n") + + for it in columns: + wiki += ("! " + it + "\n") + + for i in range(len(rows)): + wiki += "|-\n" + wiki += "| align='left'| " + rows[i] + "\n" + for j in range(len(columns)): + if matrix[i][j] == 1: + wiki += "| align='center'| x\n" + else: + wiki += "| \n" + + wiki += "|}\n" + + if path != '': + file = open(path, 'w') + file.write(wiki) + file.close() + + return wiki + + +def writeLatexTable(path, matrix, columns, rows): + latex = "\\begin{center} \n\\begin{tabular}{ | l |" + + for it in columns: + latex += (" l |") + + latex += "}\n\hline\n & " + + for i in range(len(columns)): + latex += columns[i] + if i < len(columns)-1: + latex += " & " + + latex += " \\\ \hline\n" + + for i in range(len(rows)): + latex += rows[i].replace("_", "") + " & " + for j in range(len(columns)): + if matrix[i][j] == 1: + latex += "x" + else: + latex += " " + if j < len(columns)-1: + latex += " & " + + latex += " \\\ \hline\n" + + latex += "\end{tabular}\n\end{center}" + + if path != '': + file = open(path, 'w') + file.write(latex) + file.close() + + return latex + + +def writeCXT( path, matrix, cols, rows ): + cxt = "B\n\n" + str(len(rows)) + "\n" + str(len(cols)) + "\n\n" + + for it in rows: + cxt += it + "\n" + + for it in cols: + cxt += it + "\n" + + for i in range(len(rows)): + for j in range(len(cols)): + if matrix[i][j] == 1: + cxt += "X" + else: + cxt += "." + cxt += "\n" + + if path != '': + file = open(path, 'w') + file.write(cxt) + file.close() + + return cxt + +def writeFIMI( path, matrix, cols, rows ): + + fimi = "" + + for i in range(len(rows)): + for j in range(len(cols)): + if matrix[i][j] == 1: + fimi += str(j)+" " + fimi += "\n" + + if path != '': + file = open(path, 'w') + file.write(fimi) + file.close() + + return fimi \ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/rdf/af-CLAM.rdf Mon Feb 25 14:40:54 2013 +0000 @@ -0,0 +1,113 @@ +<?xml version="1.0" encoding="UTF-8"?> +<rdf:RDF + xmlns:dc="http://purl.org/dc/elements/1.1/" + xmlns:local="http://sovarr.c4dm.eecs.qmul.ac.uk/features/" + xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" +> + <rdf:Description rdf:about="Mean"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>the mean value of the absolute value of the audio samples amplitude</dc:description> + <local:tag>Audio</local:tag> + </rdf:Description> + <rdf:Description rdf:about="Variance"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>the variance of audio samples amplitude</dc:description> + <local:tag>Audio</local:tag> + </rdf:Description> + <rdf:Description rdf:about="TemporalCentroid"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>time where signal energy is "concentrated"</dc:description> + <local:tag>Audio</local:tag> + </rdf:Description> + <rdf:Description rdf:about="LogAttackTime"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>the base 10 logarithm of the rise time</dc:description> + <local:tag>Audio</local:tag> + </rdf:Description> + <rdf:Description rdf:about="Energy"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>the squared sum of audio samples amplitudes</dc:description> + <local:tag>Audio</local:tag> + </rdf:Description> + <rdf:Description rdf:about="ZeroCrossingRate"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>a measure of the number of time the signal value cross the zero axe, averaged over the whole signal</dc:description> + <local:tag>Audio</local:tag> + </rdf:Description> + <rdf:Description rdf:about="RiseTime"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>the time duration between the signal reached 2% of it maximum value to the time it reaches 80% of its maximum value</dc:description> + <local:tag>Audio</local:tag> + </rdf:Description> + <rdf:Description rdf:about="Decrease"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>a measure of the amount of decrease in the signal energy</dc:description> + <local:tag>Audio</local:tag> + </rdf:Description> + <rdf:Description rdf:about="SpectralMean"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>the spectral power mean value.</dc:description> + <local:tag>Spectral</local:tag> + </rdf:Description> + <rdf:Description rdf:about="GeometricMean"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>the geometric mean for the spectral power values sequence</dc:description> + <local:tag>Spectral</local:tag> + </rdf:Description> + <rdf:Description rdf:about="Energy"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>the squared sum of spectral power distribution values</dc:description> + <local:tag>Spectral</local:tag> + </rdf:Description> + <rdf:Description rdf:about="SpectralCentroid"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>the frequency where the center of mass of the spectral power distribution lies</dc:description> + <local:tag>Spectral</local:tag> + </rdf:Description> + <rdf:Description rdf:about="SpectralFlatness"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:tag>Spectral</local:tag> + </rdf:Description> + <rdf:Description rdf:about="MagnitudeKurtosis"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:tag>Spectral</local:tag> + </rdf:Description> + <rdf:Description rdf:about="MFCC"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:tag>Spectral</local:tag> + </rdf:Description> + <rdf:Description rdf:about="MaxMagFreq"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>frequency of the maximum magnitude of the spectrum</dc:description> + <local:tag>Spectral</local:tag> + </rdf:Description> + <rdf:Description rdf:about="LowFreqEnergyRelation"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>the ratio between the energy over 0-100 Hz band and the whole spectrum energy</dc:description> + <local:tag>Spectral</local:tag> + </rdf:Description> + <rdf:Description rdf:about="SpectralSpread"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>the variation of the spectrum around its mean value.</dc:description> + <local:tag>Spectral</local:tag> + </rdf:Description> + <rdf:Description rdf:about="MagnitudeSkewness"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:tag>Spectral</local:tag> + </rdf:Description> + <rdf:Description rdf:about="Rolloff"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>The spectral roll-off point is the frequency value so that the 85% of the spectral energy is contained below it</dc:description> + <local:tag>Spectral</local:tag> + </rdf:Description> + <rdf:Description rdf:about="SpectralSlope"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>the amount of decreasing of the spectral magnitude</dc:description> + <local:tag>Spectral</local:tag> + </rdf:Description> + <rdf:Description rdf:about="HighFrequencyContent"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>sum of the squared spectrum magnitude multiplied by the wave number of the bin</dc:description> + <local:tag>Spectral</local:tag> + </rdf:Description> +</rdf:RDF>
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/rdf/af-MIREX.rdf Mon Feb 25 14:40:54 2013 +0000 @@ -0,0 +1,135 @@ +<?xml version="1.0" encoding="UTF-8"?> +<rdf:RDF + xmlns:dc="http://purl.org/dc/elements/1.1/" + xmlns:local="http://sovarr.c4dm.eecs.qmul.ac.uk/features/" + xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" + xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" +> + <rdf:Description rdf:about="PrincipalMelSpectrumComponents"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:feature>Principal Mel-spectrum Components</local:feature> + <local:source>MIREX</local:source> + <local:author>Philippe Hamel</local:author> + </rdf:Description> + <rdf:Description rdf:about="FluctuationPatterns"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:feature>Fluctuation Patterns</local:feature> + <local:source>MIREX</local:source> + <local:author>Franz de Leon</local:author> + </rdf:Description> + <rdf:Description rdf:about="DecorrelatedFilterBanks"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:feature>Decorrelated Filter Banks</local:feature> + <local:source>MIREX</local:source> + <local:author>Shin-Cheol Lim</local:author> + </rdf:Description> + <rdf:Description rdf:about="OctaveBasedSpectralContrast"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:feature>Octave-based Spectral Contrast</local:feature> + <local:source>MIREX</local:source> + <local:author>Shin-Cheol Lim</local:author> + </rdf:Description> + <rdf:Description rdf:about="SpectralPattern"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:feature>Spectral Pattern</local:feature> + <local:source>MIREX</local:source> + <local:author>Klaus Seyerlehner</local:author> + </rdf:Description> + <rdf:Description rdf:about="DeltaSpectralPattern"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:feature>Delta Spectral Pattern</local:feature> + <local:source>MIREX 2012</local:source> + <local:author>Klaus Seyerlehner</local:author> + </rdf:Description> + <rdf:Description rdf:about="VarianceDeltaSpectralPattern"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:feature>Variance Delta Spectral Pattern</local:feature> + <local:source>MIREX 2012</local:source> + <local:author>Klaus Seyerlehner</local:author> + </rdf:Description> + <rdf:Description rdf:about="LogarithmicFluctuationPattern"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:feature>Logarithmic Fluctuation Pattern</local:feature> + <local:source>MIREX 2012</local:source> + <local:author>Klaus Seyerlehner</local:author> + </rdf:Description> + <rdf:Description rdf:about="CorrelationPattern"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:feature>Correlation Pattern</local:feature> + <local:source>MIREX 2012</local:source> + <local:author>Klaus Seyerlehner</local:author> + </rdf:Description> + <rdf:Description rdf:about="SpectralContrastPattern"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:feature>Spectral Contrast Pattern</local:feature> + <local:source>MIREX 2012</local:source> + <local:author>Klaus Seyerlehner</local:author> + </rdf:Description> + <rdf:Description rdf:about="LocalSingleGaussianModel"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:feature>Local Single Gaussian Model</local:feature> + <local:source>MIREX 2012</local:source> + <local:author>Klaus Seyerlehner</local:author> + </rdf:Description> + <rdf:Description rdf:about="GeorgeTzanetakisModel"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:feature>George Tzanetakis Model</local:feature> + <local:source>MIREX 2012</local:source> + <local:author>Klaus Seyerlehner</local:author> + </rdf:Description> + <rdf:Description rdf:about="RhythmPattern"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:feature>Rhythm Pattern</local:feature> + <local:source>MIREX 2008</local:source> + <local:author>T. Lidy</local:author> + </rdf:Description> + <rdf:Description rdf:about="RhythmHistogram"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:feature>Rhythm Histogram</local:feature> + <local:source>MIREX 2008</local:source> + <local:author>T. Lidy</local:author> + </rdf:Description> + <rdf:Description rdf:about="TemporalRhythmHistogram"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:feature>Temporal Rhythm Histogram</local:feature> + <local:source>MIREX 2008</local:source> + <local:author>T. Lidy</local:author> + </rdf:Description> + <rdf:Description rdf:about="StatisticalSpectrumDescriptor"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:feature>Statistical Spectrum Descriptor</local:feature> + <local:source>MIREX 2008</local:source> + <local:author>T. Lidy</local:author> + </rdf:Description> + <rdf:Description rdf:about="TemporalStatisticalSpectrumDescriptor"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:feature>Temporal Statistical Spectrum Descriptor</local:feature> + <local:source>MIREX 2008</local:source> + <local:author>T. Lidy</local:author> + </rdf:Description> + <rdf:Description rdf:about="ModulationFrequencyVarianceDescriptor"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:feature>Modulation Frequency Variance Descriptor</local:feature> + <local:source>MIREX 2008</local:source> + <local:author>T. Lidy</local:author> + </rdf:Description> + <rdf:Description rdf:about="ModulationFrequencyVarianceDescriptor"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:feature>Modulation Frequency Variance Descriptor</local:feature> + <local:source>MIREX 2008</local:source> + <local:author>Ponce</local:author> + </rdf:Description> + <rdf:Description rdf:about="ModulationFrequencyVarianceDescriptor"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:feature>Modulation Frequency Variance Descriptor</local:feature> + <local:source>MIREX 2008</local:source> + <local:author>T. Lidy</local:author> + </rdf:Description> + <rdf:Description rdf:about="ModulationFrequencyVarianceDescriptor"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:feature>Modulation Frequency Variance Descriptor</local:feature> + <local:source>MIREX 2008</local:source> + <local:author>T. Lidy</local:author> + </rdf:Description> + +</rdf:RDF> \ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/rdf/af-MIRToolbox.rdf Mon Feb 25 14:40:54 2013 +0000 @@ -0,0 +1,149 @@ +<?xml version="1.0" encoding="UTF-8"?> +<rdf:RDF + xmlns:dc="http://purl.org/dc/elements/1.1/" + xmlns:local="http://sovarr.c4dm.eecs.qmul.ac.uk/features/" + xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" + xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" +> + <rdf:Description rdf:about="Tempo"> + <dc:description>derived from calculated onsets with ACF, spectrum or both</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:tag>Rhythm</local:tag> + </rdf:Description> + <rdf:Description rdf:about="Inharmonicity"> + <dc:description>the amount of partials that are not multiples of the fundamental frequency, takes into account the amount of energy outside the ideal harmonic series</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:tag>Pitch</local:tag> + </rdf:Description> + <rdf:Description rdf:about="Brightness"> + <dc:description>The proportion of energy above a given frequency</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:tag>Timbre</local:tag> + </rdf:Description> + <rdf:Description rdf:about="Chromagram"> + <dc:description>shows the distribution of energy along the pitches or pitch classes</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:tag>Tonality</local:tag> + </rdf:Description> + <rdf:Description rdf:about="Rolloff"> + <dc:description>The frequency below which 85% of the energy is contained. The percentage may be user-chosen</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:tag>Timbre</local:tag> + </rdf:Description> + <rdf:Description rdf:about="RhythmicFluctuation"> + <dc:description>Rhythmic periodicity along auditory channels</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:tag>Rhythm</local:tag> + </rdf:Description> + <rdf:Description rdf:about="Irregularity"> + <dc:description>The degree of variation of the successive peaks of the spectrum</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:tag>Timbre</local:tag> + </rdf:Description> + <rdf:Description rdf:about="ZeroCrossingRate"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:tag>Timbre</local:tag> + </rdf:Description> + <rdf:Description rdf:about="SpectralFluxOnsetDetectionFunction"> + <dc:description>Use peaks of spectral flux to detect onsets</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:tag>Rhythm</local:tag> + </rdf:Description> + <rdf:Description rdf:about="RMSEnergy"> + <dc:description>root mean square energy</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:tag>Dynamics</local:tag> + </rdf:Description> + <rdf:Description rdf:about="Mode"> + <dc:description>Major vs. Minor, calculated as the strength difference between the best major and best minor key candidates</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:tag>Tonality</local:tag> + </rdf:Description> + <rdf:Description rdf:about="Attack"> + <dc:description>estimates the beginning of the attack phase of a note by locating the local minimum before the maximum corresponding to the onset</dc:description> + <rdfs:comment>These can have start time *and end time*</rdfs:comment> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:tag>Timbre</local:tag> + </rdf:Description> + <rdf:Description rdf:about="MFCC"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:tag>Timbre</local:tag> + </rdf:Description> + <rdf:Description rdf:about="AttackSlope"> + <dc:description>average slope of attack phase, computed either as a simple ratio, or a Gaussian-weighted average to emphasise the middle of the attack</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:tag>Timbre</local:tag> + </rdf:Description> + <rdf:Description rdf:about="Key"> + <dc:description>The best candidate key</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:tag>Tonality</local:tag> + </rdf:Description> + <rdf:Description rdf:about="NoteOnset"> + <dc:description>note onset times</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:tag>Rhythm</local:tag> + </rdf:Description> + <rdf:Description rdf:about="KeyStrength"> + <dc:description>The probability distribution across possible keys</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:tag>Tonality</local:tag> + </rdf:Description> + <rdf:Description rdf:about="Roughness"> + <dc:description>The average dissonance between all pairs of peaks in the spectrum</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:tag>Timbre</local:tag> + </rdf:Description> + <rdf:Description rdf:about="Pitch"> + <dc:description>Pitch estimated via ACF, autocorrelation spectrum or cepstrum, or a combination</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:tag>Pitch</local:tag> + </rdf:Description> + <rdf:Description rdf:about="LowEnergy"> + <dc:description>percentage of frames showing less than average energy</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:tag>Dynamics</local:tag> + </rdf:Description> + <rdf:Description rdf:about="BeatSpectrum"> + <dc:description>a measure of acoustic self-similarity as a function of time lag, computed from the similarity matrix</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:tag>Rhythm</local:tag> + </rdf:Description> + <rdf:Description rdf:about="EventDensity"> + <dc:description>estimates the average frequency of events, i.e., the number of note onsets per second</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:tag>Rhythm</local:tag> + </rdf:Description> + <rdf:Description rdf:about="PulseClarity"> + <dc:description>estimates the rhythmic clarity, indicating the strength of the beats estimated by the tempo function</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:tag>Rhythm</local:tag> + </rdf:Description> + <rdf:Description rdf:about="AttackLeap"> + <dc:description>estimates the amplitude difference between the beginning and the end of the attack phase</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:tag>Timbre</local:tag> + </rdf:Description> + <rdf:Description rdf:about="MIDI"> + <dc:description>estimates MIDI note value based on segmentation and pitch detection</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:tag>Pitch</local:tag> + </rdf:Description> + <rdf:Description rdf:about="KeySOM"> + <dc:description>Projects the chromagram into a self-organizing map</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:tag>Tonality</local:tag> + </rdf:Description> + <rdf:Description rdf:about="TonalCentroid"> + <dc:description>Calculates the 6-dimensional tonal centroid vector from the chromagram</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:tag>Tonality</local:tag> + </rdf:Description> + <rdf:Description rdf:about="HarmonicChangeDetectionFunction"> + <dc:description>the flux of the tonal centroid</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:tag>Tonality</local:tag> + </rdf:Description> +</rdf:RDF> + +
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/rdf/af-Marsyas.rdf Mon Feb 25 14:40:54 2013 +0000 @@ -0,0 +1,254 @@ +<?xml version="1.0" encoding="UTF-8"?> +<rdf:RDF + xmlns:dc="http://purl.org/dc/elements/1.1/" + xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" +> + <rdf:Description rdf:about="Rms"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Rms energy of realvec</dc:description> + </rdf:Description> + <rdf:Description rdf:about="Rolloff"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Rolloff of each time slice of observations</dc:description> + </rdf:Description> + <rdf:Description rdf:about="MinArgMin"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Calculate k minimums and their positions</dc:description> + </rdf:Description> + <rdf:Description rdf:about="SNR"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Compute SNR and variations</dc:description> + </rdf:Description> + <rdf:Description rdf:about="PowerToAverageRatio"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>PowerToAverageRatio (or Power-to-Average Ratio) of a window</dc:description> + </rdf:Description> + <rdf:Description rdf:about="SpectralFlatnessAllBands"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Calculates a single spectral flatness value.</dc:description> + </rdf:Description> + <rdf:Description rdf:about="AimVQ"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Vector quantization for dense to sparse features</dc:description> + </rdf:Description> + <rdf:Description rdf:about="RunningStatistics"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Gathers the running average, variance, standard deviation, etc.</dc:description> + </rdf:Description> + <rdf:Description rdf:about="StereoSpectrumFeatures"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>StereoSpectrumFeatures capture panning information</dc:description> + </rdf:Description> + <rdf:Description rdf:about="PowerSpectrum"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>PowerSpectrum computes the magnitude/power of the complex spectrum</dc:description> + </rdf:Description> + <rdf:Description rdf:about="Yin"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Pitch detection using the YIN algorithm</dc:description> + </rdf:Description> + <rdf:Description rdf:about="BeatHistogramFromPeaks"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>BeatHistogramFromPeaks</dc:description> + </rdf:Description> + <rdf:Description rdf:about="AMDF"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Average Magnitude Difference Function</dc:description> + </rdf:Description> + <rdf:Description rdf:about="ADRess"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Azimuth Discrimination and Resynthesis (ADRess) implementation,which takes a stereo input (i.e. input is expected to be the output of a</dc:description> + </rdf:Description> + <rdf:Description rdf:about="ADRessStereoSpectrum"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Takes the output of the ADRess (i.e. the panning-frequency maps)and outputs the panning coefficient for each spectral bin (N/2+1 bins).</dc:description> + </rdf:Description> + <rdf:Description rdf:about="AimPZFC"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Time-domain AimPZFC</dc:description> + </rdf:Description> + <rdf:Description rdf:about="AimHCL2"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Halfwave rectification, compression and lowpass filtering</dc:description> + </rdf:Description> + <rdf:Description rdf:about="LSP"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Compute Linear Spectral Pair (LSP) coefficientsTakes the output of ::LPC() and calculates the corresponding LSP values.</dc:description> + </rdf:Description> + <rdf:Description rdf:about="Deviation"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Standard Deviation of each row of observations</dc:description> + </rdf:Description> + <rdf:Description rdf:about="Centroid"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Centroid of each time slice of observations</dc:description> + </rdf:Description> + <rdf:Description rdf:about="LPCC"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Convert LPC coefficients to Cepstrum coefficients.</dc:description> + </rdf:Description> + <rdf:Description rdf:about="Flux"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Flux calculate the flux between the current and prev. spectrum (e.g. output of PowerSpectrum)</dc:description> + </rdf:Description> + <rdf:Description rdf:about="AimGammatone"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Slaney's gammatone filterbank</dc:description> + </rdf:Description> + <rdf:Description rdf:about="TriangularFilterBank"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Triangular FilterBankTakes as input the N/2+1 spectrum Magnitude points output by PowerSpectrum.</dc:description> + </rdf:Description> + <rdf:Description rdf:about="MeanAbsoluteDeviation"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Calculates the mean absolute deviation</dc:description> + </rdf:Description> + <rdf:Description rdf:about="MFCC"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>MFCC Mel-Frequency Cepstral Coefficients.Takes as input the N/2+1 spectrum Magnitude points output by PowerSpectrum.</dc:description> + </rdf:Description> + <rdf:Description rdf:about="PitchDiff"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Difference between detected and expected pitch</dc:description> + </rdf:Description> + <rdf:Description rdf:about="AubioYin"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Pitch detection using the YIN algorithm</dc:description> + </rdf:Description> + <rdf:Description rdf:about="AimBoxes"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>'Box-cutting' routine to generate dense features</dc:description> + </rdf:Description> + <rdf:Description rdf:about="MeddisHairCell"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>MeddisHairCell for auditory models</dc:description> + </rdf:Description> + <rdf:Description rdf:about="AimHCL"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Halfwave rectification, compression and lowpass filtering</dc:description> + </rdf:Description> + <rdf:Description rdf:about="AimPZFC2"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Time-domain AimPZFC2</dc:description> + </rdf:Description> + <rdf:Description rdf:about="Mean"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Mean calculate the mean of each row of observations</dc:description> + </rdf:Description> + <rdf:Description rdf:about="WaveletPyramid"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Pyramid wavelet algorithm</dc:description> + </rdf:Description> + <rdf:Description rdf:about="AbsMax"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Calculate the maximum absolute value for each observationsignal (per slice).</dc:description> + </rdf:Description> + <rdf:Description rdf:about="Daub4"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Daubechies4 WaveletStep</dc:description> + </rdf:Description> + <rdf:Description rdf:about="AimLocalMax"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Local maximum strobe criterion: decaying threshold with timeout</dc:description> + </rdf:Description> + <rdf:Description rdf:about="MaxArgMax"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Calculate k maximums and their positions</dc:description> + </rdf:Description> + <rdf:Description rdf:about="EnhADRessStereoSpectrum"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Takes the output of the enhADRessand outputs the panning coefficient for each spectral bin (N/2+1 bins).</dc:description> + </rdf:Description> + <rdf:Description rdf:about="ADRessSpectrum"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Takes the output of the ADRess (i.e. the stereo azimuth-frequencymaps) and outputs a single channel spectrum of the part of the freq-azimuth</dc:description> + </rdf:Description> + <rdf:Description rdf:about="Peaker"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Pick peaks out of signal</dc:description> + </rdf:Description> + <rdf:Description rdf:about="EnhADRess"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Azimuth Discrimination and Resynthesis (EnhADRess) implementation,which takes a stereo input (i.e. input is expected to be the output of a</dc:description> + </rdf:Description> + <rdf:Description rdf:about="PeakerOnset"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Detects if input contains a onset point</dc:description> + </rdf:Description> + <rdf:Description rdf:about="BeatHistogram"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>BeatHistogram</dc:description> + </rdf:Description> + <rdf:Description rdf:about="Spectrum"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Compute the complex spectrum of input window</dc:description> + </rdf:Description> + <rdf:Description rdf:about="CrossCorrelation"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Computes the cross correlation of an input.</dc:description> + </rdf:Description> + <rdf:Description rdf:about="AimSSI"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Size-shape image (aka the 'sscAI')</dc:description> + </rdf:Description> + <rdf:Description rdf:about="LPC"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Compute Warped LPC coefficients, Pitch and Power [STILL UNDER TESTING!].</dc:description> + </rdf:Description> + <rdf:Description rdf:about="AimSAI"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Stabilised auditory image</dc:description> + </rdf:Description> + <rdf:Description rdf:about="Krumhansl_key_finder"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Krumhansl-Schmuckler Key-Finding Algorithm</dc:description> + </rdf:Description> + <rdf:Description rdf:about="StereoSpectrum"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>StereoSpectrum computes the panning index for each spectrumbin of a stereo input (i.e. input is expected to be the output of a</dc:description> + </rdf:Description> + <rdf:Description rdf:about="Power"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>compute the RMS Power of the input observations into one column*/</dc:description> + </rdf:Description> + <rdf:Description rdf:about="MaxMin"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Calculate the maximum and minimum values for each observationsignal (per slice).</dc:description> + </rdf:Description> + <rdf:Description rdf:about="Spectrum2Mel"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Convert spectrum magnitude (e.g. output from PowerSpectrum MarSystem)into Mel frequency scale.</dc:description> + </rdf:Description> + <rdf:Description rdf:about="Kurtosis"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Kurtosis</dc:description> + </rdf:Description> + <rdf:Description rdf:about="Energy"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>compute the Energy of the input observations into one column*/</dc:description> + </rdf:Description> + <rdf:Description rdf:about="RunningAutocorrelation"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Running calculation (across slices) of the autocorrelation values.</dc:description> + </rdf:Description> + <rdf:Description rdf:about="Spectrum2Chroma"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Convert spectrum magnitude (e.g. output from PowerSpectrum MarSystem)into a Chroma vector representation.</dc:description> + </rdf:Description> + <rdf:Description rdf:about="StereoSpectrumSources"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>StereoSpectrumSources estimates the number of sources placed into different stereo positions.</dc:description> + </rdf:Description> + <rdf:Description rdf:about="ZeroCrossings"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Time-domain ZeroCrossings</dc:description> + </rdf:Description> + <rdf:Description rdf:about="Median"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Median calculate the median of each row of observations</dc:description> + </rdf:Description> + <rdf:Description rdf:about="AutoCorrelation"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Compute the generalized autocorrelation of input window</dc:description> + </rdf:Description> +</rdf:RDF>
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/rdf/af-PsySound3.rdf Mon Feb 25 14:40:54 2013 +0000 @@ -0,0 +1,29 @@ +<?xml version="1.0" encoding="UTF-8"?> +<rdf:RDF + xmlns:dc="http://purl.org/dc/elements/1.1/" + xmlns:local="http://sovarr.c4dm.eecs.qmul.ac.uk/features/" + xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" + xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" +> + <rdf:Description rdf:about="Loudness"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Sharpness"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="TimbralWidth"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="SpectralDissonance"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="TonalDissonance"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="PureTonalness"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Multiplicity"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> +</rdf:RDF> \ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/rdf/af-SuperCollider.rdf Mon Feb 25 14:40:54 2013 +0000 @@ -0,0 +1,71 @@ +<?xml version="1.0" encoding="UTF-8"?> +<rdf:RDF + xmlns:dc="http://purl.org/dc/elements/1.1/" + xmlns:local="http://sovarr.c4dm.eecs.qmul.ac.uk/features/" + xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" + xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" +> + <rdf:Description rdf:about="BeatTrack"> + <dc:description>Autocorrelation based beat tracker</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="BeatTrack2"> + <dc:description>based on exhaustively testing particular template patterns against feature streams</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Chromagram"> + <dc:description>measures the energy at particular chroma within an nTET tuning system</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="SpectralFlatness"> + <dc:description>a power spectrum's geometric mean divided by its arithmetic mean</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="SpectralPercentile"> + <dc:description>calculates the cumulative distribution of the frequency spectrum, and outputs the frequency value which corresponds to the desired percentile</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="SpectralCentroid"> + <dc:description>the weighted mean frequency, or the "centre of mass" of the spectrum</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="ZeroCrossingRate"> + <dc:description>Outputs a frequency based upon the distance between interceptions of the X axis. The X intercepts are determined via linear interpolation so this gives better than just integer wavelength resolution. This is a very crude pitch follower, but can be useful in some situations.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="MFCC"> + <dc:description>Generates a set of MFCCs; these are obtained from a band-based frequency representation (using the Mel scale by default), and then a discrete cosine transform (DCT). The DCT is an efficient approximation for principal components analysis, so that it allows a compression, or reduction of dimensionality, of the data, in this case reducing 42 band readings to a smaller set of MFCCs. A small number of features (the coefficients) end up describing the spectrum. The MFCCs are commonly used as timbral descriptors.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Onsets"> + <dc:description>An onset detector for musical audio signals</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Pitch"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Loudness"> + <dc:description>A perceptual loudness function which outputs loudness in sones; this is a variant of an MP3 perceptual model, summing excitation in ERB bands. It models simple spectral and temporal masking, with equal loudness contour correction in ERB bands to obtain phons (relative dB), then a phon to sone transform. The final output is typically in the range of 0 to 64 sones, though higher values can occur with specific synthesised stimuli.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="KeyTrack"> + <dc:description>A (12TET major/minor) key tracker based on a pitch class profile of energy across FFT bins and matching this to templates for major and minor scales in all transpositions. It assumes a 440 Hz concert A reference. Output is 0-11 C major to B major, 12-23 C minor to B minor.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="SpectralCrest"> + <dc:description>produces the spectral crest measure, which is an indicator of the "peakiness" of the spectral energy distribution</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="SpectralSpread"> + <dc:description>measures the spectral spread, which is the magnitude-weighted variance</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="SpectralSlope"> + <dc:description>measures the spectral slope, which is the slope of the linear correlation line derived from the spectral magnitudes</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Crest"> + <dc:description>measures the "crest factor" of a time-domain signal, i.e. the ratio of the absolute peak to the absolute mean over a certain time period</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> +</rdf:RDF> \ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/rdf/af-Vamp.rdf Mon Feb 25 14:40:54 2013 +0000 @@ -0,0 +1,906 @@ +<?xml version="1.0" encoding="UTF-8"?> +<rdf:RDF + xmlns:dc="http://purl.org/dc/elements/1.1/" + xmlns:local="http://sovarr.c4dm.eecs.qmul.ac.uk/features/" + xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" +> + <rdf:Description rdf:about="IBT-INESCBeatTracker"> + <dc:description>Estimates beat locations and tempo (off-line [default] and on-line modes of operation)</dc:description> + <local:domain>frequency</local:domain> + <local:source>Marsyas Plugins</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Sparse</local:output> + <local:feature>IBT - INESC Beat Tracker</local:feature> + </rdf:Description> + <rdf:Description rdf:about="LocalTuning"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:domain>frequency</local:domain> + <local:feature>Local Tuning (Tuning)</local:feature> + <local:output>Dense</local:output> + <local:source>Matthias Mauch</local:source> + </rdf:Description> + <rdf:Description rdf:about="FeatureMeans"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:domain>time</local:domain> + <local:feature>Feature Means (Similarity)</local:feature> + <local:output>Dense</local:output> + <local:source>Queen Mary, University of London</local:source> + </rdf:Description> + <rdf:Description rdf:about="Tonality"> + <dc:description>Extract the tonality an audio spectrum</dc:description> + <local:domain>frequency</local:domain> + <local:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>Tonality</local:feature> + </rdf:Description> + <rdf:Description rdf:about="DiscreteCosineTransform"> + <dc:description>Extract the DCT of an audio signal</dc:description> + <local:domain>time</local:domain> + <local:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>Discrete Cosine Transform</local:feature> + </rdf:Description> + <rdf:Description rdf:about="Skewness"> + <dc:description>Extract the skewness of a range of values</dc:description> + <local:domain>frequency</local:domain> + <local:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>Skewness</local:feature> + </rdf:Description> + <rdf:Description rdf:about="BeatCount"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:domain>time</local:domain> + <local:feature>Beat Count (Bar and Beat Tracker)</local:feature> + <local:output>Sparse</local:output> + <local:source>Queen Mary, University of London</local:source> + </rdf:Description> + <rdf:Description rdf:about="MeansofCoefficients"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:domain>frequency</local:domain> + <local:feature>Means of Coefficients (Mel-Frequency Cepstral Coefficients)</local:feature> + <local:output>Dense</local:output> + <local:source>Queen Mary, University of London</local:source> + </rdf:Description> + <rdf:Description rdf:about="HighestValue"> + <dc:description>Extract the highest value from a given range</dc:description> + <local:domain>frequency</local:domain> + <local:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>Highest Value</local:feature> + </rdf:Description> + <rdf:Description rdf:about="AubioOnsetDetector"> + <dc:description>Estimate note onset times</dc:description> + <local:domain>time</local:domain> + <local:source>Paul Brossier (plugin by Chris Cannam)</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Sparse</local:output> + <local:feature>Aubio Onset Detector</local:feature> + </rdf:Description> + <rdf:Description rdf:about="Variance"> + <dc:description>Extract the variance of a range of values</dc:description> + <local:domain>frequency</local:domain> + <local:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>Variance</local:feature> + </rdf:Description> + <rdf:Description rdf:about="Mel-FrequencyCepstralCoefficients"> + <dc:description>Calculate a series of MFCC vectors from the audio</dc:description> + <dc:description>Extract MFCC from an audio spectrum</dc:description> + <dc:description>Marsyas - Batch Feature Extract - Mel-Frequency Cepstral Coefficients</dc:description> + <local:domain>time</local:domain> + <local:domain>frequency</local:domain> + <local:source>Queen Mary, University of London</local:source> + <local:source>Marsyas Plugins</local:source> + <local:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>Marsyas - Batch Feature Extract - Mel-Frequency Cepstral Coefficients</local:feature> + <local:feature>Mel-Frequency Cepstral Coefficients</local:feature> + </rdf:Description> + <rdf:Description rdf:about="SpectralCentroid"> + <dc:description>Extract the spectral centroid of an audio spectrum</dc:description> + <local:domain>frequency</local:domain> + <local:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>Spectral Centroid</local:feature> + </rdf:Description> + <rdf:Description rdf:about="SumofValues"> + <dc:description>Extract the sum of the values in a given range</dc:description> + <local:domain>frequency</local:domain> + <local:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>Sum of Values</local:feature> + </rdf:Description> + <rdf:Description rdf:about="NoteRepresentationofChordEstimate"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:domain>frequency</local:domain> + <local:feature>Note Representation of Chord Estimate (Chordino)</local:feature> + <local:output>Sparse</local:output> + <local:source>Matthias Mauch</local:source> + </rdf:Description> + <rdf:Description rdf:about="OnsetDetectionFunction"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:domain>frequency</local:domain> + <local:feature>Onset Detection Function (Tempo and Beat Tracker)</local:feature> + <local:feature>Onset Detection Function (Note Onset Detector)</local:feature> + <local:output>Dense</local:output> + <local:source>Queen Mary, University of London</local:source> + </rdf:Description> + <rdf:Description rdf:about="Similarity"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Return a distance matrix for similarity between the input audio channels</dc:description> + <local:domain>time</local:domain> + <local:feature>Similarity</local:feature> + <local:source>Queen Mary, University of London</local:source> + </rdf:Description> + <rdf:Description rdf:about="Chordino"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Chordino provides a simple chord transcription based on NNLS Chroma (as in the NNLS Chroma plugin). Chord profiles given by the user in the file chord.dict are used to calculate frame-wise chord similarities. A simple (non-state-of-the-art!) algorithm smoothes these to provide a chord transcription using a standard HMM/Viterbi approach.</dc:description> + <local:domain>frequency</local:domain> + <local:feature>Chordino</local:feature> + <local:source>Matthias Mauch</local:source> + </rdf:Description> + <rdf:Description rdf:about="AubioNoteTracker"> + <dc:description>Estimate note onset positions, pitches and durations</dc:description> + <local:domain>time</local:domain> + <local:source>Paul Brossier (plugin by Chris Cannam)</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Sparse</local:output> + <local:feature>Aubio Note Tracker</local:feature> + </rdf:Description> + <rdf:Description rdf:about="TonalChange"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Detect and return the positions of harmonic changes such as chord boundaries</dc:description> + <local:domain>time</local:domain> + <local:feature>Tonal Change</local:feature> + <local:source>Queen Mary, University of London</local:source> + </rdf:Description> + <rdf:Description rdf:about="StandardDeviation"> + <dc:description>Extract the standard deviation of a range of values</dc:description> + <local:domain>frequency</local:domain> + <local:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>Standard Deviation</local:feature> + </rdf:Description> + <rdf:Description rdf:about="ChromaMeans"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:domain>frequency</local:domain> + <local:feature>Chroma Means (Chromagram)</local:feature> + <local:output>Dense</local:output> + <local:source>Queen Mary, University of London</local:source> + </rdf:Description> + <rdf:Description rdf:about="Mean"> + <dc:description>Extract the mean of a range of values</dc:description> + <local:domain>frequency</local:domain> + <local:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>Mean</local:feature> + </rdf:Description> + <rdf:Description rdf:about="PeakSpectrum"> + <dc:description>Extract the spectral peaks from an audio spectrum</dc:description> + <local:domain>frequency</local:domain> + <local:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>Peak Spectrum</local:feature> + </rdf:Description> + <rdf:Description rdf:about="HPCP"> + <dc:description>Return the instantaneous evolution of HPCP (Harmonic Pitch Class Profile) of a signal.</dc:description> + <local:domain>frequency</local:domain> + <local:source>Music Technology Group, Universitat Pompeu Fabra</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>HPCP</local:feature> + </rdf:Description> + <rdf:Description rdf:about="SpectralSharpness"> + <dc:description>Extract the spectral sharpness of an audio spectrum</dc:description> + <local:domain>frequency</local:domain> + <local:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>Spectral Sharpness</local:feature> + </rdf:Description> + <rdf:Description rdf:about="Transformto6DTonalContentSpace"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:domain>time</local:domain> + <local:feature>Transform to 6D Tonal Content Space (Tonal Change)</local:feature> + <local:output>Dense</local:output> + <local:source>Queen Mary, University of London</local:source> + </rdf:Description> + <rdf:Description rdf:about="FundamentalFrequency"> + <dc:description>Extract the fundamental frequency of an audio signal</dc:description> + <local:domain>time</local:domain> + <local:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>Fundamental Frequency</local:feature> + </rdf:Description> + <rdf:Description rdf:about="Log-FrequencySpectrum"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:domain>frequency</local:domain> + <local:feature>Log-Frequency Spectrum (NNLS Chroma)</local:feature> + <local:output>Dense</local:output> + <local:source>Matthias Mauch</local:source> + </rdf:Description> + <rdf:Description rdf:about="NNLSChroma"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>This plugin provides a number of features derived from a DFT-based log-frequency amplitude spectrum: some variants of the log-frequency spectrum, including a semitone spectrum derived from approximate transcription using the NNLS algorithm; and based on this semitone spectrum, different chroma features.</dc:description> + <local:domain>frequency</local:domain> + <local:feature>NNLS Chroma</local:feature> + <local:source>Matthias Mauch</local:source> + </rdf:Description> + <rdf:Description rdf:about="IrregularityI"> + <dc:description>Extract the irregularity (type I) of an audio spectrum</dc:description> + <local:domain>frequency</local:domain> + <local:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>Irregularity I</local:feature> + </rdf:Description> + <rdf:Description rdf:about="SpectralAverageDeviation"> + <dc:description>Extract the average deviation of an audio spectrum</dc:description> + <local:domain>frequency</local:domain> + <local:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>Spectral Average Deviation</local:feature> + </rdf:Description> + <rdf:Description rdf:about="LowestValue"> + <dc:description>Extract the lowest value from a given range</dc:description> + <local:domain>frequency</local:domain> + <local:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>Lowest Value</local:feature> + </rdf:Description> + <rdf:Description rdf:about="BeatSpectra"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:domain>time</local:domain> + <local:feature>Beat Spectra (Similarity)</local:feature> + <local:output>Sparse</local:output> + <local:source>Queen Mary, University of London</local:source> + </rdf:Description> + <rdf:Description rdf:about="KeyMode"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:domain>time</local:domain> + <local:feature>Key Mode (Key Detector)</local:feature> + <local:output>Sparse</local:output> + <local:source>Queen Mary, University of London</local:source> + </rdf:Description> + <rdf:Description rdf:about="NoteOnsets"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:domain>frequency</local:domain> + <local:feature>Note Onsets (Note Onset Detector)</local:feature> + <local:output>Sparse</local:output> + <local:source>Queen Mary, University of London</local:source> + </rdf:Description> + <rdf:Description rdf:about="AubioPitchDetector"> + <dc:description>Track estimated note pitches</dc:description> + <local:domain>time</local:domain> + <local:source>Paul Brossier (plugin by Chris Cannam)</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Sparse</local:output> + <local:feature>Aubio Pitch Detector</local:feature> + </rdf:Description> + <rdf:Description rdf:about="SpectralSlope"> + <dc:description>Extract the spectral slope of an audio spectrum</dc:description> + <local:domain>frequency</local:domain> + <local:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>Spectral Slope</local:feature> + </rdf:Description> + <rdf:Description rdf:about="NoteOnsetDetector"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Estimate individual note onset positions</dc:description> + <local:domain>frequency</local:domain> + <local:feature>Note Onset Detector</local:feature> + <local:source>Queen Mary, University of London</local:source> + </rdf:Description> + <rdf:Description rdf:about="MELODIA-MelodyExtraction"> + <dc:description>Estimates the melody pitch in polyphonic music (also good for homophonic and monophonic music). Segments without melody are indicated by zero or negative values. For further details please read: J. Salamon and E. Gomez, "Melody Extraction from Polyphonic Music Signals using Pitch Contour Characteristics", IEEE Transactions on Audio, Speech and Language Processing, 20(6):1759-1770, 2012. We would highly appreciate the above reference being cited in publications of work in which this plug-in was used.</dc:description> + <local:domain>time</local:domain> + <local:source>Music Technology Group, Universitat Pompeu Fabra</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>MELODIA - Melody Extraction</local:feature> + </rdf:Description> + <rdf:Description rdf:about="Tuning"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>The tuning plugin can estimate the local and global tuning of piece. The same tuning method is used for the NNLS Chroma and Chordino plugins.</dc:description> + <local:domain>frequency</local:domain> + <local:feature>Tuning</local:feature> + <local:source>Matthias Mauch</local:source> + </rdf:Description> + <rdf:Description rdf:about="Kurtosis"> + <dc:description>Extract the kurtosis of a range of values</dc:description> + <local:domain>frequency</local:domain> + <local:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>Kurtosis</local:feature> + </rdf:Description> + <rdf:Description rdf:about="FundamentalFrequency(failsafe)"> + <dc:description>Extract the fundamental frequency of an audio signal (failsafe)</dc:description> + <local:domain>time</local:domain> + <local:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>Fundamental Frequency (failsafe)</local:feature> + </rdf:Description> + <rdf:Description rdf:about="RMSAmplitude"> + <dc:description>Extract the RMS amplitude of an audio signal</dc:description> + <local:domain>time</local:domain> + <local:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>RMS Amplitude</local:feature> + </rdf:Description> + <rdf:Description rdf:about="TristimulusII"> + <dc:description>Extract the tristimulus (type II) of an audio spectrum</dc:description> + <local:domain>frequency</local:domain> + <local:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>Tristimulus II</local:feature> + </rdf:Description> + <rdf:Description rdf:about="DistancefromFirstChannel"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:domain>time</local:domain> + <local:feature>Distance from First Channel (Similarity)</local:feature> + <local:output>Dense</local:output> + <local:source>Queen Mary, University of London</local:source> + </rdf:Description> + <rdf:Description rdf:about="AverageSquaredDifferenceFunction"> + <dc:description>Extract the ASDF of an audio signal</dc:description> + <local:domain>time</local:domain> + <local:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>Average Squared Difference Function</local:feature> + </rdf:Description> + <rdf:Description rdf:about="AubioBeatTracker"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Estimate the musical tempo and track beat positions</dc:description> + <local:domain>time</local:domain> + <local:feature>Aubio Beat Tracker</local:feature> + <local:source>Paul Brossier (method by Matthew Davies, plugin by Chris Cannam)</local:source> + </rdf:Description> + <rdf:Description rdf:about="SemitoneSpectrum"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:domain>frequency</local:domain> + <local:feature>Semitone Spectrum (NNLS Chroma)</local:feature> + <local:output>Dense</local:output> + <local:source>Matthias Mauch</local:source> + </rdf:Description> + <rdf:Description rdf:about="Non-zerocount"> + <dc:description>Extract the number of non-zero elements in an input spectrum</dc:description> + <local:domain>frequency</local:domain> + <local:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>Non-zero count</local:feature> + </rdf:Description> + <rdf:Description rdf:about="SpectralKurtosis"> + <dc:description>Extract the kurtosis of an audio spectrum</dc:description> + <local:domain>frequency</local:domain> + <local:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>Spectral Kurtosis</local:feature> + </rdf:Description> + <rdf:Description rdf:about="SmoothedDetectionFunction"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:domain>frequency</local:domain> + <local:feature>Smoothed Detection Function (Note Onset Detector)</local:feature> + <local:output>Sparse</local:output> + <local:source>Queen Mary, University of London</local:source> + </rdf:Description> + <rdf:Description rdf:about="FeatureVariances"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:domain>time</local:domain> + <local:feature>Feature Variances (Similarity)</local:feature> + <local:output>Dense</local:output> + <local:source>Queen Mary, University of London</local:source> + </rdf:Description> + <rdf:Description rdf:about="BarkCoefficients"> + <dc:description>Extract bark coefficients from an audio spectrum</dc:description> + <local:domain>frequency</local:domain> + <local:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>Bark Coefficients</local:feature> + </rdf:Description> + <rdf:Description rdf:about="Coefficients"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:domain>frequency</local:domain> + <local:feature>Coefficients (Mel-Frequency Cepstral Coefficients)</local:feature> + <local:output>Dense</local:output> + <local:source>Queen Mary, University of London</local:source> + </rdf:Description> + <rdf:Description rdf:about="Centroid"> + <dc:description>Marsyas - Batch Feature Extract - Centroid</dc:description> + <local:domain>time</local:domain> + <local:source>Marsyas Plugins</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>Marsyas - Batch Feature Extract - Centroid</local:feature> + </rdf:Description> + <rdf:Description rdf:about="Autocorrelation"> + <dc:description>Extract the autocorrelation of an audio signal</dc:description> + <local:domain>time</local:domain> + <local:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>Autocorrelation</local:feature> + </rdf:Description> + <rdf:Description rdf:about="SpectralStandardDeviation"> + <dc:description>Extract the standard deviation of an audio spectrum</dc:description> + <local:domain>frequency</local:domain> + <local:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>Spectral Standard Deviation</local:feature> + </rdf:Description> + <rdf:Description rdf:about="Segmenter"> + <dc:description>Divide the track into a sequence of consistent segments</dc:description> + <local:domain>time</local:domain> + <local:source>Queen Mary, University of London</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Sparse</local:output> + <local:feature>Segmenter</local:feature> + </rdf:Description> + <rdf:Description rdf:about="AverageMagnitudeDifferenceFunction"> + <dc:description>Extract the AMDF of an audio signal</dc:description> + <local:domain>time</local:domain> + <local:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>Average Magnitude Difference Function</local:feature> + </rdf:Description> + <rdf:Description rdf:about="AubioSilenceDetector"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Detect levels below a certain threshold</dc:description> + <local:domain>time</local:domain> + <local:feature>Aubio Silence Detector</local:feature> + <local:source>Paul Brossier (plugin by Chris Cannam)</local:source> + </rdf:Description> + <rdf:Description rdf:about="SpectralFlatnessMeasure"> + <dc:description>Marsyas - Batch Feature Extract - Spectral Flatness Measure</dc:description> + <local:domain>time</local:domain> + <local:source>Marsyas Plugins</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>Marsyas - Batch Feature Extract - Spectral Flatness Measure</local:feature> + </rdf:Description> + <rdf:Description rdf:about="TristimulusIII"> + <dc:description>Extract the tristimulus (type III) of an audio spectrum</dc:description> + <local:domain>frequency</local:domain> + <local:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>Tristimulus III</local:feature> + </rdf:Description> + <rdf:Description rdf:about="ChordEstimate"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:domain>frequency</local:domain> + <local:feature>Chord Estimate (Chordino)</local:feature> + <local:output>Sparse</local:output> + <local:source>Matthias Mauch</local:source> + </rdf:Description> + <rdf:Description rdf:about="Tempo"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:domain>time</local:domain> + <local:domain>frequency</local:domain> + <local:feature>Tempo (Aubio Beat Tracker)</local:feature> + <local:feature>Tempo (Tempo and Beat Tracker)</local:feature> + <local:output>Dense</local:output> + <local:output>Sparse</local:output> + <local:source>Queen Mary, University of London</local:source> + <local:source>Paul Brossier (method by Matthew Davies, plugin by Chris Cannam)</local:source> + </rdf:Description> + <rdf:Description rdf:about="ChromagramandBassChromagram"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:domain>frequency</local:domain> + <local:feature>Chromagram and Bass Chromagram (NNLS Chroma)</local:feature> + <local:output>Dense</local:output> + <local:source>Matthias Mauch</local:source> + </rdf:Description> + <rdf:Description rdf:about="TunedLog-FrequencySpectrum"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:domain>frequency</local:domain> + <local:feature>Tuned Log-Frequency Spectrum (NNLS Chroma)</local:feature> + <local:output>Dense</local:output> + <local:source>Matthias Mauch</local:source> + </rdf:Description> + <rdf:Description rdf:about="ZeroCrossingRate"> + <dc:description>Extract the zero crossing rate of an audio signal</dc:description> + <local:domain>time</local:domain> + <local:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>Zero Crossing Rate</local:feature> + </rdf:Description> + <rdf:Description rdf:about="Inharmonicity"> + <dc:description>Extract the inharmonicity of an audio spectrum</dc:description> + <local:domain>frequency</local:domain> + <local:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>Inharmonicity</local:feature> + </rdf:Description> + <rdf:Description rdf:about="PitchContours:Melody"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:domain>time</local:domain> + <local:feature>Pitch Contours: Melody (MELODIA - Melody Extraction (intermediate steps))</local:feature> + <local:output>Dense</local:output> + <local:source>Music Technology Group, Universitat Pompeu Fabra</local:source> + </rdf:Description> + <rdf:Description rdf:about="Odd/evenHarmonicRatio"> + <dc:description>Extract the odd-to-even harmonic ratio of an audio spectrum</dc:description> + <local:domain>frequency</local:domain> + <local:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>Odd/even Harmonic Ratio</local:feature> + </rdf:Description> + <rdf:Description rdf:about="DistanceMatrix"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:domain>time</local:domain> + <local:feature>Distance Matrix (Similarity)</local:feature> + <local:output>Dense</local:output> + <local:source>Queen Mary, University of London</local:source> + </rdf:Description> + <rdf:Description rdf:about="SpectralSkewness"> + <dc:description>Extract the skewness of an audio spectrum</dc:description> + <local:domain>frequency</local:domain> + <local:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>Spectral Skewness</local:feature> + </rdf:Description> + <rdf:Description rdf:about="SpectralFlatness"> + <dc:description>Extract the spectral flatness of an audio spectrum</dc:description> + <local:domain>frequency</local:domain> + <local:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>Spectral Flatness</local:feature> + </rdf:Description> + <rdf:Description rdf:about="PitchContours:All"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:domain>time</local:domain> + <local:feature>Pitch Contours: All (MELODIA - Melody Extraction (intermediate steps))</local:feature> + <local:output>Dense</local:output> + <local:source>Music Technology Group, Universitat Pompeu Fabra</local:source> + </rdf:Description> + <rdf:Description rdf:about="Log-LikelihoodofChordEstimate"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:domain>frequency</local:domain> + <local:feature>Log-Likelihood of Chord Estimate (Chordino)</local:feature> + <local:output>Dense</local:output> + <local:source>Matthias Mauch</local:source> + </rdf:Description> + <rdf:Description rdf:about="TempoandBeatTracker"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Estimate beat locations and tempo</dc:description> + <local:domain>frequency</local:domain> + <local:feature>Tempo and Beat Tracker</local:feature> + <local:source>Queen Mary, University of London</local:source> + </rdf:Description> + <rdf:Description rdf:about="Key"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:domain>time</local:domain> + <local:feature>Key (Key Detector)</local:feature> + <local:output>Sparse</local:output> + <local:source>Queen Mary, University of London</local:source> + </rdf:Description> + <rdf:Description rdf:about="KeyStrengthPlot"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:domain>time</local:domain> + <local:feature>Key Strength Plot (Key Detector)</local:feature> + <local:output>Dense</local:output> + <local:source>Queen Mary, University of London</local:source> + </rdf:Description> + <rdf:Description rdf:about="TonicPitch"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:domain>time</local:domain> + <local:feature>Tonic Pitch (Key Detector)</local:feature> + <local:output>Sparse</local:output> + <local:source>Queen Mary, University of London</local:source> + </rdf:Description> + <rdf:Description rdf:about="Bars"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:domain>time</local:domain> + <local:feature>Bars (Bar and Beat Tracker)</local:feature> + <local:output>Sparse</local:output> + <local:source>Queen Mary, University of London</local:source> + </rdf:Description> + <rdf:Description rdf:about="ZeroCrossings"> + <dc:description>Detect and count zero crossing points</dc:description> + <dc:description>Marsyas - Batch Feature Extract - Zero Crossings</dc:description> + <local:domain>time</local:domain> + <local:source>Marsyas Plugins</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>Zero Crossings</local:feature> + <local:feature>Marsyas - Batch Feature Extract - Zero Crossings</local:feature> + </rdf:Description> + <rdf:Description rdf:about="AdaptiveSpectrogram"> + <dc:description>Produce an adaptive spectrogram by adaptive selection from spectrograms at multiple resolutions</dc:description> + <local:domain>time</local:domain> + <local:source>Queen Mary, University of London</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>Adaptive Spectrogram</local:feature> + </rdf:Description> + <rdf:Description rdf:about="BeatSpectralDifference"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:domain>time</local:domain> + <local:feature>Beat Spectral Difference (Bar and Beat Tracker)</local:feature> + <local:output>Sparse</local:output> + <local:source>Queen Mary, University of London</local:source> + </rdf:Description> + <rdf:Description rdf:about="Constant-QSpectrogram"> + <dc:description>Extract a spectrogram with constant ratio of centre frequency to resolution from the input audio</dc:description> + <local:domain>frequency</local:domain> + <local:source>Queen Mary, University of London</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>Constant-Q Spectrogram</local:feature> + </rdf:Description> + <rdf:Description rdf:about="MELODIA-MelodyExtraction(intermediatesteps)"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Provides visualisations of the intermediate steps calculated by the melody extraction algorithm implemented in the MELODIA - Melody Extraction plug-in. For further details please read: J. Salamon and E. Gomez, "Melody Extraction from Polyphonic Music Signals using Pitch Contour Characteristics", IEEE Transactions on Audio, Speech and Language Processing, 20(6):1759-1770, 2012. We would highly appreciate the above reference being cited in publications of work in which this plug-in was used.</dc:description> + <local:domain>time</local:domain> + <local:feature>MELODIA - Melody Extraction (intermediate steps)</local:feature> + <local:source>Music Technology Group, Universitat Pompeu Fabra</local:source> + </rdf:Description> + <rdf:Description rdf:about="SalienceFunction"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:domain>time</local:domain> + <local:feature>Salience Function (MELODIA - Melody Extraction (intermediate steps))</local:feature> + <local:output>Dense</local:output> + <local:source>Music Technology Group, Universitat Pompeu Fabra</local:source> + </rdf:Description> + <rdf:Description rdf:about="Chromagram"> + <dc:description>Extract a series of tonal chroma vectors from the audio</dc:description> + <local:domain>frequency</local:domain> + <local:source>Queen Mary, University of London</local:source> + <local:source>Matthias Mauch</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>Chromagram (NNLS Chroma)</local:feature> + <local:feature>Chromagram</local:feature> + </rdf:Description> + <rdf:Description rdf:about="LineSpectralPairs"> + <dc:description>Marsyas - Batch Feature Extract - Line Spectral Pairs</dc:description> + <local:domain>time</local:domain> + <local:source>Marsyas Plugins</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>Marsyas - Batch Feature Extract - Line Spectral Pairs</local:feature> + </rdf:Description> + <rdf:Description rdf:about="IrregularityII"> + <dc:description>Extract the irregularity (type II) of an audio spectrum</dc:description> + <local:domain>frequency</local:domain> + <local:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>Irregularity II</local:feature> + </rdf:Description> + <rdf:Description rdf:about="SilentRegions"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:domain>time</local:domain> + <local:feature>Silent Regions (Aubio Silence Detector)</local:feature> + <local:output>Sparse</local:output> + <local:source>Paul Brossier (plugin by Chris Cannam)</local:source> + </rdf:Description> + <rdf:Description rdf:about="TonalChangePositions"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:domain>time</local:domain> + <local:feature>Tonal Change Positions (Tonal Change)</local:feature> + <local:output>Sparse</local:output> + <local:source>Queen Mary, University of London</local:source> + </rdf:Description> + <rdf:Description rdf:about="TonalChangeDetectionFunction"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:domain>time</local:domain> + <local:feature>Tonal Change Detection Function (Tonal Change)</local:feature> + <local:output>Sparse</local:output> + <local:source>Queen Mary, University of London</local:source> + </rdf:Description> + <rdf:Description rdf:about="SilenceTest"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:domain>time</local:domain> + <local:feature>Silence Test (Aubio Silence Detector)</local:feature> + <local:output>Sparse</local:output> + <local:source>Paul Brossier (plugin by Chris Cannam)</local:source> + </rdf:Description> + <rdf:Description rdf:about="Loudness"> + <dc:description>Extract the loudness of an audio signal from its spectrum</dc:description> + <local:domain>frequency</local:domain> + <local:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>Loudness</local:feature> + </rdf:Description> + <rdf:Description rdf:about="SpectralVariance"> + <dc:description>Extract the variance of an audio spectrum</dc:description> + <local:domain>frequency</local:domain> + <local:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>Spectral Variance</local:feature> + </rdf:Description> + <rdf:Description rdf:about="SpectralSmoothness"> + <dc:description>Extract the spectral smoothness of an audio spectrum</dc:description> + <local:domain>frequency</local:domain> + <local:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>Spectral Smoothness</local:feature> + </rdf:Description> + <rdf:Description rdf:about="AverageDeviation"> + <dc:description>Extract the average deviation of a range of values</dc:description> + <local:domain>frequency</local:domain> + <local:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>Average Deviation</local:feature> + </rdf:Description> + <rdf:Description rdf:about="LinearPredictionCepstralCoefficients"> + <dc:description>Marsyas - Batch Feature Extract - Linear Prediction Cepstral Coefficients</dc:description> + <local:domain>time</local:domain> + <local:source>Marsyas Plugins</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>Marsyas - Batch Feature Extract - Linear Prediction Cepstral Coefficients</local:feature> + </rdf:Description> + <rdf:Description rdf:about="KeyDetector"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Estimate the key of the music</dc:description> + <local:domain>time</local:domain> + <local:feature>Key Detector</local:feature> + <local:source>Queen Mary, University of London</local:source> + </rdf:Description> + <rdf:Description rdf:about="Spectrum"> + <dc:description>Extract the spectrum of an audio signal</dc:description> + <local:domain>time</local:domain> + <local:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>Spectrum</local:feature> + </rdf:Description> + <rdf:Description rdf:about="SpectralRolloff"> + <dc:description>Extract the rolloff point of an audio spectrum</dc:description> + <dc:description>Marsyas - Batch Feature Extract - Spectral Rolloff</dc:description> + <local:domain>time</local:domain> + <local:domain>frequency</local:domain> + <local:source>Marsyas Plugins</local:source> + <local:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>Spectral Rolloff</local:feature> + <local:feature>Marsyas - Batch Feature Extract - Spectral Rolloff</local:feature> + </rdf:Description> + <rdf:Description rdf:about="BassChromagram"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:domain>frequency</local:domain> + <local:feature>Bass Chromagram (NNLS Chroma)</local:feature> + <local:output>Dense</local:output> + <local:source>Matthias Mauch</local:source> + </rdf:Description> + <rdf:Description rdf:about="BarandBeatTracker"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <dc:description>Estimate bar and beat locations</dc:description> + <local:domain>time</local:domain> + <local:feature>Bar and Beat Tracker</local:feature> + <local:source>Queen Mary, University of London</local:source> + </rdf:Description> + <rdf:Description rdf:about="SpectralCrestMeasure"> + <dc:description>Extract the spectral crest measure of an audio spectrum</dc:description> + <local:domain>frequency</local:domain> + <local:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>Spectral Crest Measure</local:feature> + </rdf:Description> + <rdf:Description rdf:about="SpectralSpread"> + <dc:description>Extract the spectral spread of an audio spectrum</dc:description> + <local:domain>frequency</local:domain> + <local:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>Spectral Spread</local:feature> + </rdf:Description> + <rdf:Description rdf:about="SpectralCrestFactor"> + <dc:description>Marsyas - Batch Feature Extract - Spectral Crest Factor</dc:description> + <local:domain>time</local:domain> + <local:source>Marsyas Plugins</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>Marsyas - Batch Feature Extract - Spectral Crest Factor</local:feature> + </rdf:Description> + <rdf:Description rdf:about="PolyphonicTranscription"> + <dc:description>Transcribe the input audio to estimated notes</dc:description> + <local:domain>time</local:domain> + <local:source>Queen Mary, University of London</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Sparse</local:output> + <local:feature>Polyphonic Transcription</local:feature> + </rdf:Description> + <rdf:Description rdf:about="Non-SilentRegions"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:domain>time</local:domain> + <local:feature>Non-Silent Regions (Aubio Silence Detector)</local:feature> + <local:output>Sparse</local:output> + <local:source>Paul Brossier (plugin by Chris Cannam)</local:source> + </rdf:Description> + <rdf:Description rdf:about="HarmonicChangeValue"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:domain>frequency</local:domain> + <local:feature>Harmonic Change Value (Chordino)</local:feature> + <local:output>Dense</local:output> + <local:source>Matthias Mauch</local:source> + </rdf:Description> + <rdf:Description rdf:about="Beats"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:domain>time</local:domain> + <local:domain>frequency</local:domain> + <local:feature>Beats (Tempo and Beat Tracker)</local:feature> + <local:feature>Beats (Aubio Beat Tracker)</local:feature> + <local:feature>Beats (Bar and Beat Tracker)</local:feature> + <local:output>Sparse</local:output> + <local:source>Queen Mary, University of London</local:source> + <local:source>Paul Brossier (method by Matthew Davies, plugin by Chris Cannam)</local:source> + </rdf:Description> + <rdf:Description rdf:about="TristimulusI"> + <dc:description>Extract the tristimulus (type I) of an audio spectrum</dc:description> + <local:domain>frequency</local:domain> + <local:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>Tristimulus I</local:feature> + </rdf:Description> + <rdf:Description rdf:about="DiscreteWaveletTransform"> + <dc:description>Visualisation by scalogram</dc:description> + <local:domain>time</local:domain> + <local:source>Queen Mary, University of London</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>Discrete Wavelet Transform</local:feature> + </rdf:Description> + <rdf:Description rdf:about="Noisiness"> + <dc:description>Extract the noisiness of an audio spectrum</dc:description> + <local:domain>frequency</local:domain> + <local:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>Noisiness</local:feature> + </rdf:Description> + <rdf:Description rdf:about="HarmonicSpectrum"> + <dc:description>Extract the harmonics from an audio spectrum</dc:description> + <local:domain>frequency</local:domain> + <local:source>libxtract by Jamie Bullock (plugin by Chris Cannam)</local:source> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:output>Dense</local:output> + <local:feature>Harmonic Spectrum</local:feature> + </rdf:Description> + <rdf:Description rdf:about="OrderedDistancesfromFirstChannel"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + <local:domain>time</local:domain> + <local:feature>Ordered Distances from First Channel (Similarity)</local:feature> + <local:output>Dense</local:output> + <local:source>Queen Mary, University of London</local:source> + </rdf:Description> +</rdf:RDF>
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/rdf/af-Yaafe.rdf Mon Feb 25 14:40:54 2013 +0000 @@ -0,0 +1,142 @@ +<?xml version="1.0" encoding="UTF-8"?> +<rdf:RDF + xmlns:dc="http://purl.org/dc/elements/1.1/" + xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" +> + <rdf:Description rdf:about="Envelope"> + <dc:description>Extract amplitude envelope using hilbert transform, low-pass filtering and decimation.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="SpectralShapeStatistics"> + <dc:description>Compute shape statistics of :class:MagnitudeSpectrum, (see [GR2004]_).</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Cepstrum"> + <dc:description>Feature transform that compute cepstrum coefficients of input feature frames. (use DCT II)</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Energy"> + <dc:description>Compute energy as root mean square of an audio Frame.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="SpectralVariation"> + <dc:description>SpectralVariation is the normalized correlation of :class:spectrum MagnitudeSpectrum between consecutive frames. (see [GP2004]_)</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="SpectralSlope"> + <dc:description>SpectralSlope is computed by linear regression of the spectral amplitude. (see [GP2004]_)</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="ComplexDomainOnsetDetection"> + <dc:description>Compute onset detection using a complex domain spectral flux method [CD2003]_.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="TemporalShapeStatistics"> + <dc:description>Compute :ref:shape statistics shapestatistics of signal frames.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="AutoCorrelation"> + <dc:description>Compute autocorrelation coefficients *ac* on each frames.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Loudness"> + <dc:description>The loudness coefficients are the energy in each Bark band, normalized by the overall sum. see [GP2004]_ and [MG1997]_ for more details.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="MagnitudeSpectrum"> + <dc:description>Compute frame's magnitude spectrum, using an analysis window (Hanning or Hamming), or not.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="AutoCorrelationPeaksIntegrator"> + <dc:description>Feature transform that compute peaks of the autocorrelation function, outputs peaks and amplitude.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="SpectralRolloff"> + <dc:description>Spectral roll-off is the frequency so that 99% of the energy is contained below. see [SS1997]_.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="PerceptualSharpness"> + <dc:description>Compute the sharpness of :class:Loudness coefficients, according to [GP2004]_.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="SpectralFlatnessPerBand"> + <dc:description>Compute spectral flatness per log-spaced band of 1/4 octave, as proposed in MPEG7 standard.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="StatisticalIntegrator"> + <dc:description>Feature transform that compute the temporal mean and variance of input feature over the given number of frames.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="ZCR"> + <dc:description>Compute zero-crossing rate in frames. see [SS1997]_.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="PerceptualSpread"> + <dc:description>Compute the spread of :class:Loudness coefficients, according to [GP2004]_.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Derivate"> + <dc:description>Compute temporal derivative of input feature. The derivative is approximated by</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="SpectralDecrease"> + <dc:description>Compute spectral decrease accoding to [GP2004]_.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="OBSIR"> + <dc:description>Compute log of :class:OBSI ratio between consecutive octave.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="LSF"> + <dc:description>Compute the Line Spectral Frequency (LSF) coefficients of a signal frame. Algorithm was adapted from ([TB2006]_, [SH1976]_).</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="OBSI"> + <dc:description>Compute Octave band signal intensity using a trigular octave filter bank ([SE2005]_).</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="LPC"> + <dc:description>Compute the Linear Predictor Coefficients (LPC) of a signal frame. It uses autocorrelation and Levinson-Durbin algorithm. see [JM1975]_.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="SlopeIntegrator"> + <dc:description>Feature transform that compute the slope of input feature over the given number of frames.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="EnvelopeShapeStatistics"> + <dc:description>Centroid, spread, skewness and kurtosis of each frame's amplitude envelope. For more details about moments, see :ref:Shape Statistics shapestatistics.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="SpectralCrestFactorPerBand"> + <dc:description>Compute spectral crest factor per log-spaced band of 1/4 octave.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="MFCC"> + <dc:description>Compute the Mel-frequencies cepstrum coefficients [DM1980]_.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="MelSpectrum"> + <dc:description>Compute the Mel-frequencies spectrum [DM1980]_.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="SpectralFlatness"> + <dc:description>Compute global spectral flatness using the ratio between geometric and arithmetic mean.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="AmplitudeModulation"> + <dc:description>Tremelo and Grain description, according to [SE2005]_ and [AE2001]_.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Frames"> + <dc:description>Segment input signal into frames.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="SpectralFlux"> + <dc:description>Compute flux of :class:spectrum MagnitudeSpectrum between consecutives frames.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="HistogramIntegrator"> + <dc:description>Feature transform that compute histogram of input values</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> +</rdf:RDF>
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/rdf/af-aubio.rdf Mon Feb 25 14:40:54 2013 +0000 @@ -0,0 +1,136 @@ +<?xml version="1.0" encoding="UTF-8"?> +<rdf:RDF + xmlns:dc="http://purl.org/dc/elements/1.1/" + xmlns:local="http://sovarr.c4dm.eecs.qmul.ac.uk/features/" + xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" + xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" +> + <rdf:Description rdf:about="Onset"> + <dc:description>Computes the onset detection function and detect peaks in these functions. When onsets are found above a given silence threshold, and after a minimum inter-onset interval, the output vector returned by aubio_onset_do is filled with 1. Otherwise, the output vector remains 0</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="PeakPicker"> + <dc:description>Peak picking utilities function</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Pitch"> + <dc:description>Generic method for pitch detection</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="PitchFastComb"> + <dc:description>Pitch detection using a fast harmonic comb filter</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="PitchMultiComb"> + <dc:description>Pitch detection using multiple-comb filter</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="PitchSchmitt"> + <dc:description>Pitch detection using a Schmitt trigger</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="PitchYin"> + <dc:description>Pitch detection using the YIN algorithm</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="PitchFftYin"> + <dc:description>Pitch detection using a spectral implementation of the YIN algorithm</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="FilterbankMel"> + <dc:description>Mel frequency filter bank coefficients. Set filter bank coefficients to Mel frequency bands</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="FilterbankMel"> + <dc:description>Mel frequency filter bank coefficients. Set filter bank coefficients to Mel frequency bands</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="MFCC"> + <dc:description>Mel-frequency cepstrum coefficients object</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="TransientSteadyStateSeparation"> + <dc:description>Transient / Steady-state Separation (TSS)</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="OnsetDetectionFunction"> + <dc:description>These functions are designed to raise at notes attacks in music signals.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="EnergyBasedOnsetDetectionFunction"> + <dc:description>This function calculates the local energy of the input spectral frame.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="HighFrequencyContentOnsetDetectionFunction"> + <dc:description>This method computes the High Frequency Content (HFC) of the input spectral frame. The resulting function is efficient at detecting percussive onsets</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="ComplexDomainMethodOnsetDetectionFunction"> + <dc:description>Complex Domain Method onset detection function.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="PhaseBasedMethodOnsetDetectionFunction"> + <dc:description>Phase Based Method onset detection function.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="SpectralDifferenceMethodOnsetDetectionFunction"> + <dc:description>Spectral difference method onset detection function.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="KullbackLieblerOnsetDetectionFunction"> + <dc:description>Kullback-Liebler onset detection function.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="ModifiedKullbackLieblerOnsetDetectionFunction"> + <dc:description>Modified Kullback-Liebler onset detection function.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="ModifiedKullbackLieblerOnsetDetectionFunction"> + <dc:description>Modified Kullback-Liebler onset detection function.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="SpectralFlux"> + <dc:description>Spectral Flux</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="SpectralShapeDescriptors"> + <dc:description>Spectral shape descriptors</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="SpectralCentroid"> + <dc:description>The spectral centroid represents the barycenter of the spectrum.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="SpectralSpread"> + <dc:description>The spectral spread is the variance of the spectral distribution around its centroid.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="SpectralSkewness"> + <dc:description>The skewness is computed from the third order moment of the spectrum. A negative skewness indicates more energy on the lower part of the spectrum. A positive skewness indicates more energy on the high frequency of the spectrum.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="SpectralKurtosis"> + <dc:description>The kurtosis is a measure of the flatness of the spectrum, computed from the fourth order moment.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="SpectralSlope"> + <dc:description>The spectral slope represents decreasing rate of the spectral amplitude, computed using a linear regression.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="SpectralDecrease"> + <dc:description>The spectral decrease is another representation of the decreasing rate, based on perceptual criteria.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="SpectralRolloff"> + <dc:description>This function returns the bin number below which 95% of the spectrum energy is found.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="BeatTracking"> + <dc:description>Beat tracking using a context dependant model.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Tempo"> + <dc:description>Tempo detection driver. This object stores all the memory required for tempo detection algorithm and returns the estimated beat locations.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> +</rdf:RDF> \ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/rdf/af-comirva.rdf Mon Feb 25 14:40:54 2013 +0000 @@ -0,0 +1,26 @@ +<?xml version="1.0" encoding="UTF-8"?> +<rdf:RDF + xmlns:dc="http://purl.org/dc/elements/1.1/" + xmlns:local="http://sovarr.c4dm.eecs.qmul.ac.uk/features/" + xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" + xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" +> + <rdf:Description rdf:about="FluctuationPattern"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="FluctuationPatternCent"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="MandelEllis"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="SpectralPatternCent"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="TimbreDistribution"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="MFCC"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> +</rdf:RDF> \ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/rdf/af-jMIR.rdf Mon Feb 25 14:40:54 2013 +0000 @@ -0,0 +1,192 @@ +<?xml version="1.0" encoding="UTF-8"?> +<rdf:RDF + xmlns:dc="http://purl.org/dc/elements/1.1/" + xmlns:local="http://sovarr.c4dm.eecs.qmul.ac.uk/features/" + xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" +> + <rdf:Description rdf:about="SpectralVariability"> + <local:name>Spectral Variability</local:name> + <dc:description>The standard deviation of the magnitude spectrum. This is a measure of the variance of a signal's magnitude spectrum.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="SpectralRolloffPoint"> + <local:name>Spectral Rolloff Point</local:name> + <dc:description>The fraction of bins in the power spectrum at which 85% // System.getProperty(line.separator) of the power is at lower frequencies. This is a measure // System.getProperty(line.separator) // of the right-skewedness of the power spectrum.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="AreaMoments"> + <local:name>Area Method of Moments</local:name> + <dc:description>2D statistical method of moments</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="ZeroCrossings"> + <local:name>Zero Crossings</local:name> + <dc:description>The number of times the waveform changed sign. An indication of frequency as well as noisiness.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="ConstantQ"> + <local:name>ConstantQ</local:name> + <dc:description>signal to frequency transform using exponential-spaced frequency bins.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="HarmonicSpectralSmoothness"> + <local:name>Peak Based Spectral Smoothness</local:name> + <dc:description>Peak Based Spectral Smoothness is calculated from partials, not frequency bins. It is implemented accortding to McAdams 99 System.getProperty(line.separator) System.getProperty(line.separator) McAdams, S. 1999.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="AreaPolynomialApproximation"> + <local:name>2D Polynomial Approximation</local:name> + <dc:description>coeffecients of 2D polynomial best describing the input matrtix.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="LogConstantQ"> + <local:name>Log of ConstantQ</local:name> + <dc:description>logarithm of each bin of exponentially-spaced frequency bins.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="SpectralCentroid"> + <local:name>Spectral Centroid</local:name> + <dc:description>The centre of mass of the power spectrum.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="MFCC"> + <local:name>MFCC</local:name> + <dc:description>MFCC calculations based upon Orange Cow code</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="HarmonicSpectralCentroid"> + <local:name>Partial Based Spectral Centroid</local:name> + <dc:description>Spectral Centroid calculated based on the center of mass of partials instead of center of mass of bins.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="HarmonicSpectralFlux"> + <local:name>Partial Based Spectral Flux</local:name> + <dc:description>Cacluate the correlation bettween adjacent frames based peaks instead of spectral bins. Peak tracking is primitive - whe the number of bins changes, the bottom bins are matched sequentially and the extra unmatched bins are ignored.) definition = new FeatureDefinition(name, description, true, 1) dependencies = new String[] { Peak Detection, Peak Detection } offsets = new int[] { 0, -1 } } /** * Extract the peak based spectral flux from the window. * @param samples * The samples to extract the feature from. * @param sampling_rate * The sampling rate that the samples are encoded with. * @param other_feature_values * The values of other features that are needed to calculate this * value. The order and offsets of these features must be the * same as those returned by this class's getDependencies and * getDependencyOffsets methods respectively. The first indice * indicates the feature/window and the second indicates the * value. * @return The extracted feature value(s). * @throws Exception * Throws an informative exception if the feature cannot be * calculated. * @see jAudioFeatureExtractor.AudioFeatures.FeatureExtractor#extractFeature(double[], * double, double[][]) */ public double[] extractFeature(double[] samples, double sampling_rate, double[][] other_feature_values) { double[] result = new double[1] double[] old = other_feature_values[1] double[] now = other_feature_values[0] double x, y, xy, x2, y2 x = y = xy = x2 = y2 = 0.0 int peakCount = Math.min(old.length, now.length) for (int i = 0 i < peakCount i) { x = old[i] y = now[i] xy = old[i] * now[i] x2 = old[i] * old[i] y2 = now[i] * now[i] } double top = xy - (x * y) / peakCount double bottom = Math.sqrt(Math.abs((x2 - ((x * x) / peakCount)) * (y2 - ((y * y) / peakCount)))) result[0] = top / bottom return result } /** * Proviede a complete copy of this feature. Used to implement the prottype * pattern */ public Object clone() { return new HarmonicSpectralFlux() } }</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Moments"> + <local:name>Method of Moments</local:name> + <dc:description>Statistical Method of Moments of the Magnitude Spectrum.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="RelativeDifferenceFunction"> + <local:name>Relative Difference Function</local:name> + <dc:description>Relative Difference Function</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="FFTBinFrequencies"> + <local:name>FFT Bin Frequency Labels</local:name> + <dc:description>The bin label, in Hz, of each power spectrum or magnitude spectrum bin. Not useful as a feature in itself, but useful for calculating other features from the magnitude spectrum and power spectrum.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="LPC"> + <local:name>LPC</local:name> + <dc:description>Linear Prediction Coeffecients calculated using autocorrelation and Levinson-Durbin recursion.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="BeatSum"> + <local:name>Beat Sum</local:name> + <dc:description>The sum of all entries in the beat histogram. This is a good measure of the importance of regular beats in a signal.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="BeatHistogram"> + <local:name>Beat Histogram</local:name> + <dc:description>A histogram showing the relative strength of different rhythmic periodicities (tempi) in a signal. Found by calculating the auto-correlation of the RMS.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="AreaPolynomialApproximationConstantQMFCC"> + <local:name>2D Polynomial Approximation ConstantQ MFCC</local:name> + <dc:description>coeffecients of 2D polynomial best describing the input matrtix.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="BeatHistogramLabels"> + <local:name>Beat Histogram Bin Labels</local:name> + <dc:description>The bin label, in beats per minute, of each beat histogram bin. Not useful as a feature in itself, but useful for calculating other features from the beat histogram.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="AreaPolynomialApproximationLogConstantQ"> + <local:name>2D Polynomial Approximation of Log of ConstantQ</local:name> + <dc:description>coeffecients of 2D polynomial best describing the input matrix.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="MagnitudeSpectrum"> + <local:name>Magnitude Spectrum</local:name> + <dc:description>A measure of the strength of different frequency components.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="AreaMomentsLogConstantQ"> + <local:name>Area Method of Moments of Log of ConstantQ transform</local:name> + <dc:description>2D statistical method of moments of the log of the ConstantQ transform</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="AreaMomentsMFCC"> + <local:name>Area Method of Moments of MFCCs</local:name> + <dc:description>2D statistical method of moments of MFCCs</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="PowerSpectrum"> + <local:name>Power Spectrum</local:name> + <dc:description>A measure of the power of different frequency components.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="StrongestBeat"> + <local:name>Strongest Beat</local:name> + <dc:description>The strongest beat in a signal, in beats per minute, found by finding the strongest bin in the beat histogram.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="StrengthOfStrongestBeat"> + <local:name>Strength Of Strongest Beat</local:name> + <dc:description>How strong the strongest beat in the beat histogram is compared to other potential beats.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="RMS"> + <local:name>Root Mean Square</local:name> + <dc:description>A measure of the power of a signal.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="FractionOfLowEnergyWindows"> + <local:name>Fraction Of Low Energy Windows</local:name> + <dc:description>The fraction of the last 100 windows that has an RMS less than the mean RMS in the last 100 windows. This can indicate how much of a signal is quiet relative to the rest of the signal.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="SpectralFlux"> + <local:name>Spectral Flux</local:name> + <dc:description>A measure of the amount of spectral change in a signal. //\n Found by calculating the change in the magnitude spectrum //\n from frame to frame.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="StrongestFrequencyViaZeroCrossings"> + <local:name>Strongest Frequency Via Zero Crossings</local:name> + <dc:description>The strongest frequency component of a signal, in Hz, found via the number of zero-crossings.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="ConstantQMFCC"> + <local:name>ConstantQ derived MFCCs</local:name> + <dc:description>MFCCs directly caluclated from ConstantQ exponential bins</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Compactness"> + <local:name>Compactness</local:name> + <dc:description>A measure of the noisiness of a signal. Found by comparing the components of a window's magnitude spectrum with the magnitude spectrum of its neighbouring windows.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="StrongestFrequencyViaFFTMax"> + <local:name>Strongest Frequency Via FFT Maximum</local:name> + <dc:description>The strongest frequency component of a signal, in Hz, found via finding the FFT bin with the highest power.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="StrongestFrequencyViaSpectralCentroid"> + <local:name>Strongest Frequency Via Spectral Centroid</local:name> + <dc:description>The strongest frequency component of a signal, in Hz, found via the spectral centroid.</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="AreaMomentsConstantQMFCC"> + <local:name>Area Method of Moments of ConstantQ-based MFCCs</local:name> + <dc:description>2D statistical method of moments of ConstantQ-based MFCCs</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="PeakFinder"> + <local:name>Peak Detection</local:name> + <dc:description>All peaks that are within an order of magnitude of the highest point</dc:description> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> +</rdf:RDF>
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/rdf/af-libXtract.rdf Mon Feb 25 14:40:54 2013 +0000 @@ -0,0 +1,182 @@ +<?xml version="1.0" encoding="UTF-8"?> +<rdf:RDF + xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" +> + <rdf:Description rdf:about="Tristimulus 3"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Dct"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Subbands"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Nonzero count"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Mfcc"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Flatness db"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Standard deviation"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Decay time"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Irregularity j"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Spectrum"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Spread"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Irregularity k"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Loudness"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Spectral slope"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Hps"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Peak spectrum"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Rms amplitude"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Attack time"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Tonality"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Average deviation"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Harmonic spectrum"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Spectral skewness"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Spectral inharmonicity"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Mean"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Autocorrelation fft"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Power"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Lowest value"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Sum"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Zcr"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Amdf"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Variance"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Asdf"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Skewness"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Spectral average deviation"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Spectral kurtosis"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Rolloff"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="F0"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Spectral standard deviation"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Flatness"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Flux"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Highest value"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Tristimulus 2"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Lpcc"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Difference vector"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Smoothness"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Lnorm"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Failsafe f0"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Sharpness"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Spectral variance"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Bark coefficients"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Autocorrelation"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Kurtosis"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Tristimulus 1"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Crest"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Noisiness"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Spectral mean"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Lpc"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Odd even ratio"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="Spectral centroid"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> +</rdf:RDF>
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/rdf/af-sMIRk.rdf Mon Feb 25 14:40:54 2013 +0000 @@ -0,0 +1,32 @@ +<?xml version="1.0" encoding="UTF-8"?> +<rdf:RDF + xmlns:dc="http://purl.org/dc/elements/1.1/" + xmlns:local="http://sovarr.c4dm.eecs.qmul.ac.uk/features/" + xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" + xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" +> + <rdf:Description rdf:about="SpectralCentroid"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="SpectralFlux"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="RMS"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="SpectralRolloff"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="AutoCorrelation"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="ZeroCrossing"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="CrossCorrelation"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> + <rdf:Description rdf:about="LPC"> + <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/> + </rdf:Description> +</rdf:RDF> \ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/rdf/base.rdf Mon Feb 25 14:40:54 2013 +0000 @@ -0,0 +1,1155 @@ +<?xml version="1.0" encoding="UTF-8"?> +<rdf:RDF + xmlns:local="http://sovarr.c4dm.eecs.qmul.ac.uk/features/" + xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" +> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AmplitudeDescriptor"> + <local:complexity>low</local:complexity> + <local:appdomain>environmental sound recognition</local:appdomain> + <local:feature>AmplitudeDescriptor</local:feature> + <local:temporalscale>intraframe</local:temporalscale> + <local:level>physical</local:level> + <local:domain>temporal</local:domain> + <local:computation>Spectral binning</local:computation> + <local:computation>Mean</local:computation> + <local:computation>Median</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>9</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Inharmonicity"> + <local:complexity>medium</local:complexity> + <local:appdomain>music information retrieval</local:appdomain> + <local:feature>Inharmonicity</local:feature> + <local:temporalscale>intraframe</local:temporalscale> + <local:level>perceptual</local:level> + <local:domain>frequency</local:domain> + <local:computation>Zero-/Level Crossing Detector</local:computation> + <local:computation>Autocorrelation</local:computation> + <local:computation>Median</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>1</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralPeakStructure"> + <local:complexity>medium</local:complexity> + <local:appdomain>music information retrieval</local:appdomain> + <local:feature>SpectralPeakStructure</local:feature> + <local:temporalscale>intraframe</local:temporalscale> + <local:level>perceptual</local:level> + <local:domain>frequency</local:domain> + <local:computation>Spectral binning</local:computation> + <local:computation>Zero-/Level Crossing Detector</local:computation> + <local:computation>Derivation, Difference</local:computation> + <local:computation>Entropy</local:computation> + <local:computation>Discrete Fourier Transform</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>1</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralDispersion"> + <local:complexity>low</local:complexity> + <local:appdomain>music information retrieval</local:appdomain> + <local:feature>SpectralDispersion</local:feature> + <local:temporalscale>intraframe</local:temporalscale> + <local:level>perceptual</local:level> + <local:domain>frequency</local:domain> + <local:computation>Energy Spectral Density</local:computation> + <local:computation>Harmonic Peak Detection</local:computation> + <local:computation>Discrete Fourier Transform</local:computation> + <local:computation>Median</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>1</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/IntegralLoudness"> + <local:complexity>high</local:complexity> + <local:appdomain>music information retrieval</local:appdomain> + <local:model>psychoacoustic</local:model> + <local:feature>IntegralLoudness</local:feature> + <local:temporalscale>intraframe</local:temporalscale> + <local:level>perceptual</local:level> + <local:domain>frequency</local:domain> + <local:computation>Exponential Function</local:computation> + <local:computation>(Non-) Linear Weighting Function</local:computation> + <local:computation>Logarithm</local:computation> + <local:computation>Discrete Fourier Transform</local:computation> + <local:computation>Root Mean Square</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>1</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Chromagram"> + <local:complexity>medium</local:complexity> + <local:appdomain>music information retrieval</local:appdomain> + <local:feature>Chromagram</local:feature> + <local:temporalscale>intraframe</local:temporalscale> + <local:level>perceptual</local:level> + <local:domain>frequency</local:domain> + <local:computation>Discrete Fourier Transform</local:computation> + <local:computation>Logarithm</local:computation> + <local:computation>Root Mean Square</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>12</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PsychoacousticalPitch"> + <local:complexity>high</local:complexity> + <local:appdomain>several</local:appdomain> + <local:model>psychoacoustic</local:model> + <local:feature>PsychoacousticalPitch</local:feature> + <local:temporalscale>intraframe</local:temporalscale> + <local:level>perceptual</local:level> + <local:domain>frequency</local:domain> + <local:computation>Root Mean Square</local:computation> + <local:computation>Band-pass Filter (Bank)</local:computation> + <local:computation>(Non-) Linear Weighting Function</local:computation> + <local:computation>Autocorrelation</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>parameterized</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/RhythmPatterns"> + <local:complexity>high</local:complexity> + <local:appdomain>music information retrieval</local:appdomain> + <local:model>psychoacoustic</local:model> + <local:feature>RhythmPatterns</local:feature> + <local:temporalscale>interframe</local:temporalscale> + <local:level>physical</local:level> + <local:domain>modulation frequency</local:domain> + <local:computation>(Non-) Linear Weighting Function</local:computation> + <local:computation>Low-pass Filter</local:computation> + <local:computation>Logarithm</local:computation> + <local:computation>Regression</local:computation> + <local:computation>Harmonic Peak Detection</local:computation> + <local:computation>Discrete Fourier Transform</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>80</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MPEG7LogAttackTime"> + <local:complexity>low</local:complexity> + <local:appdomain>music information retrieval</local:appdomain> + <local:computedIn>MPEG-7</local:computedIn> + <local:feature>MPEG7LogAttackTime</local:feature> + <local:temporalscale>global</local:temporalscale> + <local:level>physical</local:level> + <local:domain>temporal</local:domain> + <local:computation>Power</local:computation> + <local:computation>Logarithm</local:computation> + <local:computation>Root Mean Square</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>1</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/JointAcousticandModuluationFrequency"> + <local:complexity>high</local:complexity> + <local:appdomain>several</local:appdomain> + <local:model>psychoacoustic</local:model> + <local:feature>JointAcousticandModuluationFrequency</local:feature> + <local:temporalscale>interframe</local:temporalscale> + <local:level>physical</local:level> + <local:domain>modulation frequency</local:domain> + <local:computation>Discrete Wavelet Transform</local:computation> + <local:computation>Low-pass Filter</local:computation> + <local:computation>Regression</local:computation> + <local:computation>Discrete Fourier Transform</local:computation> + <local:computation>Root Mean Square</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>parameterized</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralFlatness"> + <local:complexity>medium</local:complexity> + <local:appdomain>fingerprinting</local:appdomain> + <local:feature>SpectralFlatness</local:feature> + <local:temporalscale>intraframe</local:temporalscale> + <local:level>perceptual</local:level> + <local:domain>frequency</local:domain> + <local:computation>Mean</local:computation> + <local:computation>Discrete Fourier Transform</local:computation> + <local:computation>Logarithm</local:computation> + <local:computation>Regression</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>parameterized</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/BarkscaleFrequencyCepstralCoefficients"> + <local:complexity>high</local:complexity> + <local:appdomain>several</local:appdomain> + <local:model>psychoacoustic</local:model> + <local:feature>BarkscaleFrequencyCepstralCoefficients</local:feature> + <local:temporalscale>intraframe</local:temporalscale> + <local:level>physical</local:level> + <local:domain>cepstral</local:domain> + <local:computation>Discrete Fourier Transform</local:computation> + <local:computation>Logarithm</local:computation> + <local:computation>Regression</local:computation> + <local:computation>Discrete Cosine Transform</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>parameterized</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/BeatTracker"> + <local:complexity>high</local:complexity> + <local:appdomain>music information retrieval</local:appdomain> + <local:feature>BeatTracker</local:feature> + <local:temporalscale>interframe</local:temporalscale> + <local:level>perceptual</local:level> + <local:domain>modulation frequency</local:domain> + <local:computation>Comb Filter (Bank)</local:computation> + <local:computation>Low-pass Filter</local:computation> + <local:computation>Derivation, Difference</local:computation> + <local:computation>Band-pass Filter (Bank)</local:computation> + <local:computation>Root Mean Square</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>1</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/CyclicBeatSpectrum"> + <local:complexity>high</local:complexity> + <local:appdomain>music information retrieval</local:appdomain> + <local:feature>CyclicBeatSpectrum</local:feature> + <local:temporalscale>interframe</local:temporalscale> + <local:level>perceptual</local:level> + <local:domain>modulation frequency</local:domain> + <local:computation>Comb Filter (Bank)</local:computation> + <local:computation>Low-pass Filter</local:computation> + <local:computation>Derivation, Difference</local:computation> + <local:computation>Discrete Fourier Transform</local:computation> + <local:computation>Root Mean Square</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>parameterized</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AuditoryFilterBankTemporalEnvelopes"> + <local:complexity>medium</local:complexity> + <local:appdomain>music information retrieval</local:appdomain> + <local:model>psychoacoustic</local:model> + <local:feature>AuditoryFilterBankTemporalEnvelopes</local:feature> + <local:temporalscale>intraframe</local:temporalscale> + <local:level>physical</local:level> + <local:domain>modulation frequency</local:domain> + <local:computation>Energy Spectral Density</local:computation> + <local:computation>Band-pass Filter (Bank)</local:computation> + <local:computation>Root Mean Square</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>62</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DaubechiesWaveletCoefficientHistogram"> + <local:complexity>medium</local:complexity> + <local:appdomain>music information retrieval</local:appdomain> + <local:feature>DaubechiesWaveletCoefficientHistogram</local:feature> + <local:temporalscale>intraframe</local:temporalscale> + <local:level>physical</local:level> + <local:domain>frequency</local:domain> + <local:computation>Spectral binning</local:computation> + <local:computation>Discrete Wavelet Transform</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>28</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/4HzModulationEnergy"> + <local:complexity>medium</local:complexity> + <local:appdomain>audio segmentation</local:appdomain> + <local:model>psychoacoustic</local:model> + <local:feature>4HzModulationEnergy</local:feature> + <local:temporalscale>interframe</local:temporalscale> + <local:level>physical</local:level> + <local:domain>modulation frequency</local:domain> + <local:computation>Energy Spectral Density</local:computation> + <local:computation>Normalization</local:computation> + <local:computation>Regression</local:computation> + <local:computation>Band-pass Filter (Bank)</local:computation> + <local:computation>Discrete Fourier Transform</local:computation> + <local:computation>Root Mean Square</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>1</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralCrest"> + <local:complexity>low</local:complexity> + <local:appdomain>fingerprinting</local:appdomain> + <local:feature>SpectralCrest</local:feature> + <local:temporalscale>intraframe</local:temporalscale> + <local:level>perceptual</local:level> + <local:domain>frequency</local:domain> + <local:computation>Sum, Weighted Sum</local:computation> + <local:computation>Mean</local:computation> + <local:computation>Logarithm</local:computation> + <local:computation>Regression</local:computation> + <local:computation>Discrete Fourier Transform</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>parameterized</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralSlope"> + <local:complexity>low</local:complexity> + <local:appdomain>several</local:appdomain> + <local:feature>SpectralSlope</local:feature> + <local:temporalscale>intraframe</local:temporalscale> + <local:level>physical</local:level> + <local:domain>frequency</local:domain> + <local:computation>Peak Detection</local:computation> + <local:computation>Discrete Fourier Transform</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>4</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MPEG7HarmonicSpectralDeviation"> + <local:complexity>medium</local:complexity> + <local:appdomain>music information retrieval</local:appdomain> + <local:computedIn>MPEG-7</local:computedIn> + <local:feature>MPEG7HarmonicSpectralDeviation</local:feature> + <local:temporalscale>intraframe</local:temporalscale> + <local:level>perceptual</local:level> + <local:domain>frequency</local:domain> + <local:computation>Median</local:computation> + <local:computation>Zero-/Level Crossing Detector</local:computation> + <local:computation>Mean</local:computation> + <local:computation>Logarithm</local:computation> + <local:computation>Discrete Fourier Transform</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>1</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MPEG7HarmonicSpectralSpread"> + <local:complexity>medium</local:complexity> + <local:appdomain>music information retrieval</local:appdomain> + <local:computedIn>MPEG-7</local:computedIn> + <local:feature>MPEG7HarmonicSpectralSpread</local:feature> + <local:temporalscale>intraframe</local:temporalscale> + <local:level>perceptual</local:level> + <local:domain>frequency</local:domain> + <local:computation>Zero-/Level Crossing Detector</local:computation> + <local:computation>Discrete Fourier Transform</local:computation> + <local:computation>Median</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>1</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LineSpectralFrequencies"> + <local:complexity>medium</local:complexity> + <local:appdomain>several</local:appdomain> + <local:feature>LineSpectralFrequencies</local:feature> + <local:temporalscale>intraframe</local:temporalscale> + <local:level>physical</local:level> + <local:domain>frequency</local:domain> + <local:computation>Percentile</local:computation> + <local:computation>Autoregression (Linear Prediction Analysis)</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>parameterized</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MPEG7AudioFundamentalFrequency"> + <local:complexity>low</local:complexity> + <local:appdomain>several</local:appdomain> + <local:computedIn>MPEG-7</local:computedIn> + <local:feature>MPEG7AudioFundamentalFrequency</local:feature> + <local:temporalscale>intraframe</local:temporalscale> + <local:level>perceptual</local:level> + <local:domain>frequency</local:domain> + <local:computation>Sum, Weighted Sum</local:computation> + <local:computation>Autocorrelation</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>2</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/NoiseRobustAuditoryFeature"> + <local:complexity>high</local:complexity> + <local:appdomain>environmental sound recognition</local:appdomain> + <local:model>psychoacoustic</local:model> + <local:feature>NoiseRobustAuditoryFeature</local:feature> + 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<local:computation>Discrete Fourier Transform</local:computation> + <local:computation>Root Mean Square</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>1</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MelscaleFrequencyCepstralCoefficients"> + <local:complexity>high</local:complexity> + <local:appdomain>several</local:appdomain> + <local:model>psychoacoustic</local:model> + <local:feature>MelscaleFrequencyCepstralCoefficients</local:feature> + <local:temporalscale>intraframe</local:temporalscale> + <local:abbreviation>MFCC</local:abbreviation> + <local:level>physical</local:level> + <local:domain>cepstral</local:domain> + <local:computation>Discrete Fourier Transform</local:computation> + <local:computation>Logarithm</local:computation> + <local:computation>Regression</local:computation> + <local:computation>Discrete Cosine Transform</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>parameterized</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralCentroid"> + <local:complexity>low</local:complexity> + <local:appdomain>several</local:appdomain> + <local:feature>SpectralCentroid</local:feature> + <local:temporalscale>intraframe</local:temporalscale> + <local:level>perceptual</local:level> + <local:domain>frequency</local:domain> + <local:computation>Mean</local:computation> + <local:computation>Discrete Fourier Transform</local:computation> + <local:computation>Logarithm</local:computation> + <local:computation>Regression</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>1</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/4HzModulationHarmonicCoefficients"> + <local:complexity>medium</local:complexity> + <local:appdomain>audio segmentation</local:appdomain> + <local:feature>4HzModulationHarmonicCoefficients</local:feature> + <local:temporalscale>interframe</local:temporalscale> + <local:level>physical</local:level> + <local:domain>modulation frequency</local:domain> + <local:computation>Sum, Weighted Sum</local:computation> + <local:computation>Band-pass Filter (Bank)</local:computation> + <local:computation>Autocorrelation</local:computation> + <local:computation>Discrete Cosine Transform</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>1</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DWPTbasedRhythmFeature"> + 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<local:temporalscale>interframe</local:temporalscale> + <local:level>perceptual</local:level> + <local:domain>modulation frequency</local:domain> + <local:computation>Spectral binning</local:computation> + <local:computation>Autocorrelation</local:computation> + <local:computation>Discrete Wavelet Transform</local:computation> + <local:computation>Low-pass Filter</local:computation> + <local:computation>Root Mean Square</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>6</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Bandwidth"> + <local:complexity>low</local:complexity> + <local:appdomain>several</local:appdomain> + <local:feature>Bandwidth</local:feature> + <local:temporalscale>intraframe</local:temporalscale> + <local:level>perceptual</local:level> + <local:domain>frequency</local:domain> + <local:computation>Discrete Fourier Transform</local:computation> + <local:computation>Logarithm</local:computation> + <local:computation>Regression</local:computation> + <local:computation>Median</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>1</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PerceptualLinearPrediction"> + <local:complexity>high</local:complexity> + <local:appdomain>speech recognition</local:appdomain> + <local:model>psychoacoustic</local:model> + <local:feature>PerceptualLinearPrediction</local:feature> + <local:temporalscale>intraframe</local:temporalscale> + <local:level>physical</local:level> + <local:domain>cepstral</local:domain> + <local:computation>Discrete Cosine Transform</local:computation> + <local:computation>Autoregression (Linear Prediction Analysis)</local:computation> + <local:computation>Cepstral Recursion Formula</local:computation> + <local:computation>(Non-) Linear Weighting Function</local:computation> + <local:computation>Regression</local:computation> + <local:computation>Discrete Fourier Transform</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>parameterized</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Sharpness"> + <local:complexity>medium</local:complexity> + <local:appdomain>several</local:appdomain> + <local:model>psychoacoustic</local:model> + <local:feature>Sharpness</local:feature> + <local:temporalscale>intraframe</local:temporalscale> + <local:level>perceptual</local:level> + <local:domain>frequency</local:domain> + <local:computation>(Non-) Linear Weighting Function</local:computation> + <local:computation>Mean</local:computation> + <local:computation>Discrete Fourier Transform</local:computation> + <local:computation>Regression</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>1</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralCenter"> + <local:complexity>low</local:complexity> + <local:appdomain>music information retrieval</local:appdomain> + <local:feature>SpectralCenter</local:feature> + <local:temporalscale>intraframe</local:temporalscale> + <local:level>perceptual</local:level> + <local:domain>frequency</local:domain> + <local:computation>Energy Spectral Density</local:computation> + <local:computation>Harmonic Peak Detection</local:computation> + <local:computation>Discrete Fourier Transform</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>1</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MPEG7AudioSpectrumSpread"> + <local:complexity>medium</local:complexity> + <local:appdomain>several</local:appdomain> + <local:model>psychoacoustic</local:model> + <local:feature>MPEG7AudioSpectrumSpread</local:feature> + <local:temporalscale>intraframe</local:temporalscale> + <local:computedIn>MPEG-7</local:computedIn> + <local:level>perceptual</local:level> + <local:domain>frequency</local:domain> + <local:computation>Discrete Fourier Transform</local:computation> + <local:computation>Logarithm</local:computation> + <local:computation>Regression</local:computation> + <local:computation>Median</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>1</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ZeroCrossingRate"> + <local:complexity>low</local:complexity> + <local:appdomain>several</local:appdomain> + <local:feature>ZeroCrossingRate</local:feature> + <local:temporalscale>intraframe</local:temporalscale> + <local:abbreviation>ZCR</local:abbreviation> + <local:level>physical</local:level> + <local:domain>temporal</local:domain> + <local:computation>Spectral binning</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>1</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/RelativeSpectralPLP"> + <local:complexity>high</local:complexity> + <local:appdomain>speech recognition</local:appdomain> + <local:model>psychoacoustic</local:model> + <local:feature>RelativeSpectralPLP</local:feature> + <local:temporalscale>intraframe</local:temporalscale> + <local:level>physical</local:level> + <local:domain>cepstral</local:domain> + <local:computation>Exponential Function</local:computation> + <local:computation>Discrete Cosine Transform</local:computation> + <local:computation>Autoregression (Linear Prediction Analysis)</local:computation> + <local:computation>Cepstral Recursion Formula</local:computation> + <local:computation>(Non-) Linear Weighting Function</local:computation> + <local:computation>Logarithm</local:computation> + <local:computation>Regression</local:computation> + <local:computation>Band-pass Filter (Bank)</local:computation> + <local:computation>Discrete Fourier Transform</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>parameterized</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AutocorrelationMFCCs"> + <local:complexity>high</local:complexity> + <local:appdomain>speech recognition</local:appdomain> + <local:model>psychoacoustic</local:model> + <local:feature>AutocorrelationMFCCs</local:feature> + <local:temporalscale>intraframe</local:temporalscale> + <local:level>physical</local:level> + <local:domain>cepstral</local:domain> + <local:computation>Autocorrelation</local:computation> + <local:computation>Discrete Cosine Transform</local:computation> + <local:computation>Low-pass Filter</local:computation> + <local:computation>Logarithm</local:computation> + <local:computation>Regression</local:computation> + <local:computation>Discrete Fourier Transform</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>parameterized</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MPEG7AudioSpectrumCentroid"> + <local:complexity>medium</local:complexity> + <local:appdomain>several</local:appdomain> + <local:model>psychoacoustic</local:model> + <local:feature>MPEG7AudioSpectrumCentroid</local:feature> + <local:temporalscale>intraframe</local:temporalscale> + <local:computedIn>MPEG-7</local:computedIn> + <local:level>perceptual</local:level> + <local:domain>frequency</local:domain> + <local:computation>Mean</local:computation> + <local:computation>Discrete Fourier Transform</local:computation> + <local:computation>Logarithm</local:computation> + <local:computation>Regression</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>1</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PitchProfile"> + <local:complexity>high</local:complexity> + <local:appdomain>music information retrieval</local:appdomain> + <local:feature>PitchProfile</local:feature> + <local:temporalscale>intraframe</local:temporalscale> + <local:level>perceptual</local:level> + <local:domain>frequency</local:domain> + <local:computation>Constant Q Transform</local:computation> + <local:computation>Spectral binning</local:computation> + <local:computation>Sum, Weighted Sum</local:computation> + <local:computation>Root Mean Square</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>12</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ModifiedGroupDelay"> + <local:complexity>medium</local:complexity> + <local:appdomain>speech recognition</local:appdomain> + <local:feature>ModifiedGroupDelay</local:feature> + <local:temporalscale>intraframe</local:temporalscale> + <local:level>physical</local:level> + <local:domain>frequency</local:domain> + <local:computation>Low-pass Filter</local:computation> + <local:computation>Discrete Fourier Transform</local:computation> + <local:computation>Discrete Cosine Transform</local:computation> + <local:computation>Group Delay Function</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>parameterized</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MultiresolutionEntropy"> + <local:complexity>medium</local:complexity> + <local:appdomain>speech recognition</local:appdomain> + <local:feature>MultiresolutionEntropy</local:feature> + <local:temporalscale>intraframe</local:temporalscale> + <local:level>perceptual</local:level> + <local:domain>frequency</local:domain> + <local:computation>Normalization</local:computation> + <local:computation>Entropy</local:computation> + <local:computation>Discrete Fourier Transform</local:computation> + <local:computation>Regression</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>parameterized</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/HarmonicProminence"> + <local:complexity>medium</local:complexity> + <local:appdomain>environmental sound recognition</local:appdomain> + <local:feature>HarmonicProminence</local:feature> + <local:temporalscale>intraframe</local:temporalscale> + <local:level>perceptual</local:level> + <local:domain>frequency</local:domain> + <local:computation>Zero-/Level Crossing Detector</local:computation> + <local:computation>Autocorrelation</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>1</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MPEG7AudioSpectrumBasis"> + <local:complexity>high</local:complexity> + <local:appdomain>environmental sound recognition</local:appdomain> + <local:computedIn>MPEG-7</local:computedIn> + <local:feature>MPEG7AudioSpectrumBasis</local:feature> + <local:temporalscale>interframe</local:temporalscale> + <local:level>physical</local:level> + <local:domain>eigendomain</local:domain> + <local:computation>Independent Component Analysis</local:computation> + <local:computation>Normalization</local:computation> + <local:computation>Logarithm</local:computation> + <local:computation>Regression</local:computation> + <local:computation>Singular Value Decomposition</local:computation> + <local:computation>Discrete Fourier Transform</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>parameterized</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MPEG7AudioHarmonicity"> + <local:complexity>medium</local:complexity> + <local:appdomain>several</local:appdomain> + <local:computedIn>MPEG-7</local:computedIn> + <local:feature>MPEG7AudioHarmonicity</local:feature> + <local:temporalscale>intraframe</local:temporalscale> + <local:level>perceptual</local:level> + <local:domain>frequency</local:domain> + <local:computation>Sum, Weighted Sum</local:computation> + <local:computation>Autocorrelation</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>2</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MPEG7HarmonicSpectralVariation"> + <local:complexity>medium</local:complexity> + <local:appdomain>music information retrieval</local:appdomain> + <local:computedIn>MPEG-7</local:computedIn> + <local:feature>MPEG7HarmonicSpectralVariation</local:feature> + <local:temporalscale>intraframe</local:temporalscale> + <local:level>perceptual</local:level> + <local:domain>frequency</local:domain> + <local:computation>Zero-/Level Crossing Detector</local:computation> + <local:computation>Discrete Fourier Transform</local:computation> + <local:computation>Cross-Correlation</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>1</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MPEG7HarmonicSpectralCentroid"> + <local:complexity>medium</local:complexity> + <local:appdomain>music information retrieval</local:appdomain> + <local:computedIn>MPEG-7</local:computedIn> + <local:feature>MPEG7HarmonicSpectralCentroid</local:feature> + <local:temporalscale>intraframe</local:temporalscale> + <local:level>perceptual</local:level> + <local:domain>frequency</local:domain> + <local:computation>Mean</local:computation> + <local:computation>Zero-/Level Crossing Detector</local:computation> + <local:computation>Discrete Fourier Transform</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>1</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Sone"> + <local:complexity>high</local:complexity> + <local:appdomain>music information retrieval</local:appdomain> + <local:model>psychoacoustic</local:model> + <local:feature>Sone</local:feature> + <local:temporalscale>intraframe</local:temporalscale> + <local:level>perceptual</local:level> + <local:domain>frequency</local:domain> + <local:computation>(Non-) Linear Weighting Function</local:computation> + <local:computation>Low-pass Filter</local:computation> + <local:computation>Logarithm</local:computation> + <local:computation>Regression</local:computation> + <local:computation>Discrete Fourier Transform</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>parameterized</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ShortTimeEnergy"> + <local:complexity>low</local:complexity> + <local:appdomain>several</local:appdomain> + <local:feature>ShortTimeEnergy</local:feature> + <local:temporalscale>intraframe</local:temporalscale> + <local:level>physical</local:level> + <local:domain>temporal</local:domain> + <local:computation>Deviation, Sum of Differences</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>1</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MPEG7SpectralCentroid"> + <local:complexity>low</local:complexity> + <local:appdomain>music information retrieval</local:appdomain> + <local:computedIn>MPEG-7</local:computedIn> + <local:feature>MPEG7SpectralCentroid</local:feature> + <local:temporalscale>global</local:temporalscale> + <local:level>perceptual</local:level> + <local:domain>frequency</local:domain> + <local:computation>Discrete Fourier Transform</local:computation> + <local:computation>Mean</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>1</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/HarmonicEnergyEntropy"> + <local:complexity>medium</local:complexity> + <local:appdomain>music information retrieval</local:appdomain> + <local:feature>HarmonicEnergyEntropy</local:feature> + <local:temporalscale>intraframe</local:temporalscale> + <local:level>perceptual</local:level> + <local:domain>frequency</local:domain> + <local:computation>Zero-/Level Crossing Detector</local:computation> + <local:computation>Discrete Fourier Transform</local:computation> + <local:computation>Entropy</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>1</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ChromaCENSFeatures"> + <local:complexity>medium</local:complexity> + <local:appdomain>music information retrieval</local:appdomain> + <local:feature>ChromaCENSFeatures</local:feature> + <local:temporalscale>intraframe</local:temporalscale> + <local:level>perceptual</local:level> + <local:domain>frequency</local:domain> + <local:computation>Normalization</local:computation> + <local:computation>Low-pass Filter</local:computation> + <local:computation>Root Mean Square</local:computation> + <local:computation>Band-pass Filter Bank</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>12</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/RatescalefrequencyFeatures"> + <local:complexity>high</local:complexity> + <local:appdomain>environmental sound recognition</local:appdomain> + <local:model>psychoacoustic</local:model> + <local:feature>RatescalefrequencyFeatures</local:feature> + <local:temporalscale>interframe</local:temporalscale> + <local:level>physical</local:level> + <local:domain>eigendomain</local:domain> + <local:computation>Discrete Wavelet Transform</local:computation> + <local:computation>(Non-) Linear Weighting Function</local:computation> + <local:computation>Band-pass Filter Bank</local:computation> + <local:computation>Principal Component Analysis</local:computation> + <local:computation>Low-pass Filter</local:computation> + <local:computation>Derivation, Difference</local:computation> + <local:computation>Root Mean Square</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>256</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/BeatSpectrum"> + <local:complexity>high</local:complexity> + <local:appdomain>music information retrieval</local:appdomain> + <local:feature>BeatSpectrum</local:feature> + <local:temporalscale>interframe</local:temporalscale> + <local:level>perceptual</local:level> + <local:domain>modulation frequency</local:domain> + <local:computation>Autocorrelation</local:computation> + <local:computation>Low-pass Filter</local:computation> + <local:computation>Cross-Correlation</local:computation> + <local:computation>Logarithm</local:computation> + <local:computation>Discrete Fourier Transform</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>parameterized</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Volume"> + <local:complexity>low</local:complexity> + <local:appdomain>several</local:appdomain> + <local:feature>Volume</local:feature> + <local:temporalscale>intraframe</local:temporalscale> + <local:level>physical</local:level> + <local:domain>temporal</local:domain> + <local:computation>Power</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>1</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralPeaks"> + <local:complexity>low</local:complexity> + <local:appdomain>music information retrieval</local:appdomain> + <local:feature>SpectralPeaks</local:feature> + <local:temporalscale>interframe</local:temporalscale> + <local:level>physical</local:level> + <local:domain>frequency</local:domain> + <local:computation>Derivation, Difference</local:computation> + <local:computation>Discrete Fourier Transform</local:computation> + <local:computation>Sum, Weighted Sum</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>parameterized</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SubbandSpectralFlux"> + <local:complexity>medium</local:complexity> + <local:appdomain>environmental sound recognition</local:appdomain> + <local:feature>SubbandSpectralFlux</local:feature> + <local:temporalscale>intraframe</local:temporalscale> + <local:level>perceptual</local:level> + <local:domain>frequency</local:domain> + <local:computation>Mean</local:computation> + <local:computation>Normalization</local:computation> + <local:computation>Logarithm</local:computation> + <local:computation>Regression</local:computation> + <local:computation>Derivation, Difference</local:computation> + <local:computation>Discrete Fourier Transform</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>8</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PulseMetric"> + <local:complexity>medium</local:complexity> + <local:appdomain>audio segmentation</local:appdomain> + <local:feature>PulseMetric</local:feature> + <local:temporalscale>intraframe</local:temporalscale> + <local:level>perceptual</local:level> + <local:domain>modulation frequency</local:domain> + <local:computation>Autocorrelation</local:computation> + <local:computation>Band-pass Filter 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</rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SubbandEnergyRatio"> + <local:complexity>low</local:complexity> + <local:appdomain>several</local:appdomain> + <local:feature>SubbandEnergyRatio</local:feature> + <local:temporalscale>intraframe</local:temporalscale> + <local:level>physical</local:level> + <local:domain>frequency</local:domain> + <local:computation>Energy Spectral Density</local:computation> + <local:computation>Normalization</local:computation> + <local:computation>Discrete Fourier Transform</local:computation> + <local:computation>Regression</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>parameterized</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralRolloff"> + <local:complexity>low</local:complexity> + <local:appdomain>several</local:appdomain> + <local:feature>SpectralRolloff</local:feature> + <local:temporalscale>intraframe</local:temporalscale> + <local:level>perceptual</local:level> + <local:domain>frequency</local:domain> + <local:computation>Polynomial Root Finding</local:computation> + <local:computation>Discrete Fourier Transform</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>1</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/BandPeriodicity"> + <local:complexity>medium</local:complexity> + <local:appdomain>audio segmentation</local:appdomain> + <local:feature>BandPeriodicity</local:feature> + <local:temporalscale>interframe</local:temporalscale> + <local:level>perceptual</local:level> + <local:domain>modulation frequency</local:domain> + <local:computation>Sum, Weighted Sum</local:computation> + <local:computation>Root Mean Square</local:computation> + <local:computation>Band-pass Filter (Bank)</local:computation> + <local:computation>Autocorrelation</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>4</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AdaptiveTimeFrequencyTransform"> + <local:complexity>medium</local:complexity> + <local:appdomain>music information retrieval</local:appdomain> + <local:feature>AdaptiveTimeFrequencyTransform</local:feature> + <local:temporalscale>global</local:temporalscale> + <local:level>physical</local:level> + <local:domain>frequency</local:domain> + <local:computation>Spectral binning</local:computation> + <local:computation>Adaptive Time Frequency Transform</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>42</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/HarmonicCoefficient"> + <local:complexity>low</local:complexity> + <local:appdomain>audio segmentation</local:appdomain> + <local:feature>HarmonicCoefficient</local:feature> + <local:temporalscale>intraframe</local:temporalscale> + <local:level>perceptual</local:level> + <local:domain>frequency</local:domain> + <local:computation>Sum, Weighted Sum</local:computation> + <local:computation>Autocorrelation</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>1</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/LinearPredictionCepstralCoefficients"> + <local:complexity>medium</local:complexity> + <local:appdomain>speech recognition</local:appdomain> + <local:feature>LinearPredictionCepstralCoefficients</local:feature> + <local:temporalscale>intraframe</local:temporalscale> + <local:abbreviation>LPCC</local:abbreviation> + <local:level>physical</local:level> + <local:domain>cepstral</local:domain> + <local:computation>Band-pass Filter (Bank)</local:computation> + <local:computation>Autoregression (Linear Prediction Analysis)</local:computation> + <local:computation>Cepstral Recursion Formula</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>parameterized</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DistortionDiscriminantAnalysis"> + <local:complexity>high</local:complexity> + <local:appdomain>fingerprinting</local:appdomain> + <local:feature>DistortionDiscriminantAnalysis</local:feature> + <local:temporalscale>interframe</local:temporalscale> + <local:level>physical</local:level> + <local:domain>eigendomain</local:domain> + <local:computation>Modulated Complex Lapped Transform</local:computation> + <local:computation>Logarithm</local:computation> + <local:computation>Principal Component Analysis</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>64</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MPEG7AudioWaveform"> + <local:complexity>low</local:complexity> + <local:computation>Histogram</local:computation> + <local:computation>Sum, Weighted Sum</local:computation> + <local:computation>Windowing</local:computation> + <local:computedIn>MPEG-7</local:computedIn> + <local:feature>MPEG7AudioWaveform</local:feature> + <local:temporalscale>intraframe</local:temporalscale> + <local:level>physical</local:level> + <local:domain>temporal</local:domain> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>2</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MPEG7TemporalCentroid"> + <local:complexity>low</local:complexity> + <local:appdomain>music information retrieval</local:appdomain> + <local:computedIn>MPEG-7</local:computedIn> + <local:feature>MPEG7TemporalCentroid</local:feature> + <local:temporalscale>interframe</local:temporalscale> + <local:level>physical</local:level> + <local:domain>temporal</local:domain> + <local:computation>Power</local:computation> + <local:computation>Mean</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>1</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Pitch"> + <local:complexity>low</local:complexity> + <local:appdomain>several</local:appdomain> + <local:feature>Pitch</local:feature> + <local:temporalscale>intraframe</local:temporalscale> + <local:level>perceptual</local:level> + <local:domain>frequency</local:domain> + <local:computation>Sum, Weighted Sum</local:computation> + <local:computation>Autocorrelation</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>1</local:dimensions> + </rdf:Description> + <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ZeroCrossingPeakAmplitudes"> + <local:complexity>medium</local:complexity> + <local:appdomain>speech recognition</local:appdomain> + <local:model>psychoacoustic</local:model> + <local:feature>ZeroCrossingPeakAmplitudes</local:feature> + <local:temporalscale>intraframe</local:temporalscale> + <local:level>physical</local:level> + <local:domain>temporal</local:domain> + <local:computation>Spectral binning</local:computation> + <local:computation>Band-pass Filter (Bank)</local:computation> + <local:computation>Logarithm</local:computation> + <local:computation>Root Mean Square</local:computation> + <local:computation>Windowing</local:computation> + <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/> + <local:dimensions>parameterized</local:dimensions> + </rdf:Description> +</rdf:RDF>
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/rdfn3/af-CLAM.n3 Mon Feb 25 14:40:54 2013 +0000 @@ -0,0 +1,87 @@ +@prefix CLAM: <file:///Users/alo/MusicOntology/features/rdf/> . +@prefix dc: <http://purl.org/dc/elements/1.1/> . +@prefix local: <http://sovarr.c4dm.eecs.qmul.ac.uk/features/> . +@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . + +CLAM:Decrease a rdfs:Resource ; + dc:description "a measure of the amount of decrease in the signal energy" ; + local:tag "Audio" . + +CLAM:Energy a rdfs:Resource ; + dc:description "the squared sum of audio samples amplitudes", + "the squared sum of spectral power distribution values" ; + local:tag "Audio", + "Spectral" . + +CLAM:GeometricMean a rdfs:Resource ; + dc:description "the geometric mean for the spectral power values sequence" ; + local:tag "Spectral" . + +CLAM:HighFrequencyContent a rdfs:Resource ; + dc:description "sum of the squared spectrum magnitude multiplied by the wave number of the bin" ; + local:tag "Spectral" . + +CLAM:LogAttackTime a rdfs:Resource ; + dc:description "the base 10 logarithm of the rise time" ; + local:tag "Audio" . + +CLAM:LowFreqEnergyRelation a rdfs:Resource ; + dc:description "the ratio between the energy over 0-100 Hz band and the whole spectrum energy" ; + local:tag "Spectral" . + +CLAM:MFCC a rdfs:Resource ; + local:tag "Spectral" . + +CLAM:MagnitudeKurtosis a rdfs:Resource ; + local:tag "Spectral" . + +CLAM:MagnitudeSkewness a rdfs:Resource ; + local:tag "Spectral" . + +CLAM:MaxMagFreq a rdfs:Resource ; + dc:description "frequency of the maximum magnitude of the spectrum" ; + local:tag "Spectral" . + +CLAM:Mean a rdfs:Resource ; + dc:description "the mean value of the absolute value of the audio samples amplitude" ; + local:tag "Audio" . + +CLAM:RiseTime a rdfs:Resource ; + dc:description "the time duration between the signal reached 2% of it maximum value to the time it reaches 80% of its maximum value" ; + local:tag "Audio" . + +CLAM:Rolloff a rdfs:Resource ; + dc:description "The spectral roll-off point is the frequency value so that the 85% of the spectral energy is contained below it" ; + local:tag "Spectral" . + +CLAM:SpectralCentroid a rdfs:Resource ; + dc:description "the frequency where the center of mass of the spectral power distribution lies" ; + local:tag "Spectral" . + +CLAM:SpectralFlatness a rdfs:Resource ; + local:tag "Spectral" . + +CLAM:SpectralMean a rdfs:Resource ; + dc:description "the spectral power mean value." ; + local:tag "Spectral" . + +CLAM:SpectralSlope a rdfs:Resource ; + dc:description "the amount of decreasing of the spectral magnitude" ; + local:tag "Spectral" . + +CLAM:SpectralSpread a rdfs:Resource ; + dc:description "the variation of the spectrum around its mean value." ; + local:tag "Spectral" . + +CLAM:TemporalCentroid a rdfs:Resource ; + dc:description "time where signal energy is \"concentrated\"" ; + local:tag "Audio" . + +CLAM:Variance a rdfs:Resource ; + dc:description "the variance of audio samples amplitude" ; + local:tag "Audio" . + +CLAM:ZeroCrossingRate a rdfs:Resource ; + dc:description "a measure of the number of time the signal value cross the zero axe, averaged over the whole signal" ; + local:tag "Audio" . +
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/rdfn3/af-MIREX.n3 Mon Feb 25 14:40:54 2013 +0000 @@ -0,0 +1,95 @@ +@prefix MIREX: <file:///Users/alo/MusicOntology/features/rdf/> . +@prefix local: <http://sovarr.c4dm.eecs.qmul.ac.uk/features/> . +@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . + +MIREX:CorrelationPattern a rdfs:Resource ; + local:author "Klaus Seyerlehner" ; + local:feature "Correlation Pattern" ; + local:source "MIREX 2012" . + +MIREX:DecorrelatedFilterBanks a rdfs:Resource ; + local:author "Shin-Cheol Lim" ; + local:feature "Decorrelated Filter Banks" ; + local:source "MIREX" . + +MIREX:DeltaSpectralPattern a rdfs:Resource ; + local:author "Klaus Seyerlehner" ; + local:feature "Delta Spectral Pattern" ; + local:source "MIREX 2012" . + +MIREX:FluctuationPatterns a rdfs:Resource ; + local:author "Franz de Leon" ; + local:feature "Fluctuation Patterns" ; + local:source "MIREX" . + +MIREX:GeorgeTzanetakisModel a rdfs:Resource ; + local:author "Klaus Seyerlehner" ; + local:feature "George Tzanetakis Model" ; + local:source "MIREX 2012" . + +MIREX:LocalSingleGaussianModel a rdfs:Resource ; + local:author "Klaus Seyerlehner" ; + local:feature "Local Single Gaussian Model" ; + local:source "MIREX 2012" . + +MIREX:LogarithmicFluctuationPattern a rdfs:Resource ; + local:author "Klaus Seyerlehner" ; + local:feature "Logarithmic Fluctuation Pattern" ; + local:source "MIREX 2012" . + +MIREX:ModulationFrequencyVarianceDescriptor a rdfs:Resource ; + local:author "Ponce", + "T. Lidy" ; + local:feature "Modulation Frequency Variance Descriptor" ; + local:source "MIREX 2008" . + +MIREX:OctaveBasedSpectralContrast a rdfs:Resource ; + local:author "Shin-Cheol Lim" ; + local:feature "Octave-based Spectral Contrast" ; + local:source "MIREX" . + +MIREX:PrincipalMelSpectrumComponents a rdfs:Resource ; + local:author "Philippe Hamel" ; + local:feature "Principal Mel-spectrum Components" ; + local:source "MIREX" . + +MIREX:RhythmHistogram a rdfs:Resource ; + local:author "T. Lidy" ; + local:feature "Rhythm Histogram" ; + local:source "MIREX 2008" . + +MIREX:RhythmPattern a rdfs:Resource ; + local:author "T. Lidy" ; + local:feature "Rhythm Pattern" ; + local:source "MIREX 2008" . + +MIREX:SpectralContrastPattern a rdfs:Resource ; + local:author "Klaus Seyerlehner" ; + local:feature "Spectral Contrast Pattern" ; + local:source "MIREX 2012" . + +MIREX:SpectralPattern a rdfs:Resource ; + local:author "Klaus Seyerlehner" ; + local:feature "Spectral Pattern" ; + local:source "MIREX" . + +MIREX:StatisticalSpectrumDescriptor a rdfs:Resource ; + local:author "T. Lidy" ; + local:feature "Statistical Spectrum Descriptor" ; + local:source "MIREX 2008" . + +MIREX:TemporalRhythmHistogram a rdfs:Resource ; + local:author "T. Lidy" ; + local:feature "Temporal Rhythm Histogram" ; + local:source "MIREX 2008" . + +MIREX:TemporalStatisticalSpectrumDescriptor a rdfs:Resource ; + local:author "T. Lidy" ; + local:feature "Temporal Statistical Spectrum Descriptor" ; + local:source "MIREX 2008" . + +MIREX:VarianceDeltaSpectralPattern a rdfs:Resource ; + local:author "Klaus Seyerlehner" ; + local:feature "Variance Delta Spectral Pattern" ; + local:source "MIREX 2012" . +
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/rdfn3/af-MIRToolbox.n3 Mon Feb 25 14:40:54 2013 +0000 @@ -0,0 +1,116 @@ +@prefix MIRToolbox: <file:///Users/alo/MusicOntology/features/rdf/> . +@prefix dc: <http://purl.org/dc/elements/1.1/> . +@prefix local: <http://sovarr.c4dm.eecs.qmul.ac.uk/features/> . +@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . + +MIRToolbox:Attack a rdfs:Resource ; + dc:description "estimates the beginning of the attack phase of a note by locating the local minimum before the maximum corresponding to the onset" ; + local:tag "Timbre" ; + rdfs:comment "These can have start time *and end time*" . + +MIRToolbox:AttackLeap a rdfs:Resource ; + dc:description "estimates the amplitude difference between the beginning and the end of the attack phase" ; + local:tag "Timbre" . + +MIRToolbox:AttackSlope a rdfs:Resource ; + dc:description "average slope of attack phase, computed either as a simple ratio, or a Gaussian-weighted average to emphasise the middle of the attack" ; + local:tag "Timbre" . + +MIRToolbox:BeatSpectrum a rdfs:Resource ; + dc:description "a measure of acoustic self-similarity as a function of time lag, computed from the similarity matrix" ; + local:tag "Rhythm" . + +MIRToolbox:Brightness a rdfs:Resource ; + dc:description "The proportion of energy above a given frequency" ; + local:tag "Timbre" . + +MIRToolbox:Chromagram a rdfs:Resource ; + dc:description "shows the distribution of energy along the pitches or pitch classes" ; + local:tag "Tonality" . + +MIRToolbox:EventDensity a rdfs:Resource ; + dc:description "estimates the average frequency of events, i.e., the number of note onsets per second" ; + local:tag "Rhythm" . + +MIRToolbox:HarmonicChangeDetectionFunction a rdfs:Resource ; + dc:description "the flux of the tonal centroid" ; + local:tag "Tonality" . + +MIRToolbox:Inharmonicity a rdfs:Resource ; + dc:description "the amount of partials that are not multiples of the fundamental frequency, takes into account the amount of energy outside the ideal harmonic series" ; + local:tag "Pitch" . + +MIRToolbox:Irregularity a rdfs:Resource ; + dc:description "The degree of variation of the successive peaks of the spectrum" ; + local:tag "Timbre" . + +MIRToolbox:Key a rdfs:Resource ; + dc:description "The best candidate key" ; + local:tag "Tonality" . + +MIRToolbox:KeySOM a rdfs:Resource ; + dc:description "Projects the chromagram into a self-organizing map" ; + local:tag "Tonality" . + +MIRToolbox:KeyStrength a rdfs:Resource ; + dc:description "The probability distribution across possible keys" ; + local:tag "Tonality" . + +MIRToolbox:LowEnergy a rdfs:Resource ; + dc:description "percentage of frames showing less than average energy" ; + local:tag "Dynamics" . + +MIRToolbox:MFCC a rdfs:Resource ; + local:tag "Timbre" . + +MIRToolbox:MIDI a rdfs:Resource ; + dc:description "estimates MIDI note value based on segmentation and pitch detection" ; + local:tag "Pitch" . + +MIRToolbox:Mode a rdfs:Resource ; + dc:description "Major vs. Minor, calculated as the strength difference between the best major and best minor key candidates" ; + local:tag "Tonality" . + +MIRToolbox:NoteOnset a rdfs:Resource ; + dc:description "note onset times" ; + local:tag "Rhythm" . + +MIRToolbox:Pitch a rdfs:Resource ; + dc:description "Pitch estimated via ACF, autocorrelation spectrum or cepstrum, or a combination" ; + local:tag "Pitch" . + +MIRToolbox:PulseClarity a rdfs:Resource ; + dc:description "estimates the rhythmic clarity, indicating the strength of the beats estimated by the tempo function" ; + local:tag "Rhythm" . + +MIRToolbox:RMSEnergy a rdfs:Resource ; + dc:description "root mean square energy" ; + local:tag "Dynamics" . + +MIRToolbox:RhythmicFluctuation a rdfs:Resource ; + dc:description "Rhythmic periodicity along auditory channels" ; + local:tag "Rhythm" . + +MIRToolbox:Rolloff a rdfs:Resource ; + dc:description "The frequency below which 85% of the energy is contained. The percentage may be user-chosen" ; + local:tag "Timbre" . + +MIRToolbox:Roughness a rdfs:Resource ; + dc:description "The average dissonance between all pairs of peaks in the spectrum" ; + local:tag "Timbre" . + +MIRToolbox:SpectralFluxOnsetDetectionFunction a rdfs:Resource ; + dc:description "Use peaks of spectral flux to detect onsets" ; + local:tag "Rhythm" . + +MIRToolbox:Tempo a rdfs:Resource ; + dc:description "derived from calculated onsets with ACF, spectrum or both" ; + local:tag "Rhythm" . + +MIRToolbox:TonalCentroid a rdfs:Resource ; + dc:description "Calculates the 6-dimensional tonal centroid vector from the chromagram" ; + local:tag "Tonality" . + +MIRToolbox:ZeroCrossingRate a rdfs:Resource ; + local:tag "Timbre" . +
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/rdfn3/af-Marsyas.n3 Mon Feb 25 14:40:54 2013 +0000 @@ -0,0 +1,207 @@ +@prefix dc: <http://purl.org/dc/elements/1.1/> . +@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . + +<ADRess> a rdfs:Resource ; + dc:description "Azimuth Discrimination and Resynthesis (ADRess) implementation, which takes a stereo input (i.e. input is expected to be the output of a parallel of two Spectrum MarSystems, one for each stereo channel), and outputs the phase vector and frequency dependent nulls matrix for each channel using the following format: [bin_phases_l][AZl] [bin_phases_r][AZr] This algorithm was proposed by Dan Barry et al at the DAfX04, \"Sound Source Separation: azimuth discrimination and resynthesis\". The algorithm exploits the use of pan pot as a means to achieve image localisation within stereophonic recordings, assuming only an interaural intensity difference exists between left and right channels for a single source. A gain scaling and phase cancellation technique is then used to expose frequency dependent nulls across the azimuth domain, from which source separation and resynthesis may be carried out. Controls: - \\b mrs_natural/beta [w] : Sets the azimuth resolution" . + +<ADRessSpectrum> a rdfs:Resource ; + dc:description "Takes the output of the ADRess (i.e. the stereo azimuth-frequency maps) and outputs a single channel spectrum of the part of the freq-azimuth plane selected by the d and H controls. This can then be inverse transformed back into time domain for resynthesis purposes. Controls: - \\b mrs_real/d [w] : value between 0.0~1.0, used for selecting the portion of the azimuth-frequency plane to be extracted - \\b mrs_real/H [w] : sets the azimuth subspace width (in percentage of total width of the azimuth plane)" . + +<ADRessStereoSpectrum> a rdfs:Resource ; + dc:description "Takes the output of the ADRess (i.e. the panning-frequency maps) and outputs the panning coefficient for each spectral bin (N/2+1 bins)." . + +<AMDF> a rdfs:Resource ; + dc:description "Average Magnitude Difference Function Computer the average magnitude difference function which can then be used for pitch detection by detecting the location of valleys." . + +<AbsMax> a rdfs:Resource ; + dc:description "Calculate the maximum absolute value for each observation signal (per slice). For each observation channel in each given slice, the maximum absolute value is calculated. This MarSystem has no extra controls." . + +<AimBoxes> a rdfs:Resource ; + dc:description "'Box-cutting' routine to generate dense features Author : Thomas Walters <tom@acousticscale.org> Ported to Marsyas by Steven Ness <sness@sness.net> The original source code for these functions in AIM-C can be found at: http://code.google.com/p/aimc/" . + +<AimGammatone> a rdfs:Resource ; + dc:description "Slaney's gammatone filterbank Author : Thomas Walters <tom@acousticscale.org> Ported to Marsyas by Steven Ness <sness@sness.net> This is the version of the IIR gammatone used in Slaney's Auditory toolbox. The original verison as described in Apple Tech. Report #35 has a problem with the high-order coefficients at low centre frequencies and high sample rates. Since it is important that AIM-C can deal with these cases (for example for the Gaussian features), I've reiplemeted Slaney's alternative version which uses a cascade of four second-order filters in place of the eighth-order filter. The original source code for these functions in AIM-C can be found at: http://code.google.com/p/aimc/" . + +<AimHCL> a rdfs:Resource ; + dc:description "Halfwave rectification, compression and lowpass filtering Author Thomas Walters <tom@acousticscale.org> Ported to Marsyas by Steven Ness <sness@sness.net> The original source code for these functions in AIM-C can be found at: http://code.google.com/p/aimc/" . + +<AimHCL2> a rdfs:Resource ; + dc:description "Halfwave rectification, compression and lowpass filtering Author Thomas Walters <tom@acousticscale.org> Ported to Marsyas by Steven Ness <sness@sness.net> Made more Marsyas like by George Tzanetakis The original source code for these functions in AIM-C can be found at: http://code.google.com/p/aimc/" . + +<AimLocalMax> a rdfs:Resource ; + dc:description "Local maximum strobe criterion: decaying threshold with timeout Author : Thomas Walters <tom@acousticscale.org> Ported to Marsyas by Steven Ness <sness@sness.net> The original source code for these functions in AIM-C can be found at: http://code.google.com/p/aimc/" . + +<AimPZFC> a rdfs:Resource ; + dc:description "Time-domain AimPZFC Dick Lyon's Pole-Zero Filter Cascade - implemented in C++ by Tom Walters from the AIM-MAT module based on Dick Lyon's code. Ported to Marsyas from AIM-C by Steven Ness (sness@sness.net). The original source code for these functions in AIM-C can be found at: http://code.google.com/p/aimc/" . + +<AimPZFC2> a rdfs:Resource ; + dc:description "Time-domain AimPZFC2 Dick Lyon's Pole-Zero Filter Cascade - implemented in C++ by Tom Walters from the AIM-MAT module based on Dick Lyon's code. Ported to Marsyas from AIM-C by Steven Ness (sness@sness.net). AimPZFC2 is a re-write of the AimPZFC to be more Marsyas like. The original source code for these functions in AIM-C can be found at: http://code.google.com/p/aimc/" . + +<AimSAI> a rdfs:Resource ; + dc:description "Stabilised auditory image Author : Thomas Walters <tom@acousticscale.org> Ported to Marsyas by Steven Ness <sness@sness.net> The original source code for these functions in AIM-C can be found at: http://code.google.com/p/aimc/" . + +<AimSSI> a rdfs:Resource ; + dc:description "Size-shape image (aka the 'sscAI') Author : Thomas Walters <tom@acousticscale.org> Ported to Marsyas by Steven Ness <sness@sness.net> The original source code for these functions in AIM-C can be found at: http://code.google.com/p/aimc/" . + +<AimVQ> a rdfs:Resource ; + dc:description "Vector quantization for dense to sparse features Author : Thomas Walters <tom@acousticscale.org> Ported to Marsyas by Steven Ness <sness@sness.net> The original source code for these functions in AIM-C can be found at: http://code.google.com/p/aimc/" . + +<AubioYin> a rdfs:Resource ; + dc:description "Pitch detection using the YIN algorithm This algorithm was developped by A. de Cheveigne and H. Kawahara and published in: De Cheveigne, A., Kawahara, H. (2002) \"YIN, a fundamental frequency estimator for speech and music\", J. Acoust. Soc. Am. 111, 1917-1930. See http://recherche.ircam.fr/equipes/pcm/pub/people/cheveign.html This code was adapted from aubio (http://aubio.org) by sness. Controls: - \\b mrs_real/tolerance [w] : sets the tolerance of the yin algorithm" . + +<AutoCorrelation> a rdfs:Resource ; + dc:description "Compute the generalized autocorrelation of input window Computes the generalized autocorrelation (with optional magnitude compression) using the Fast Fourier Transform (FFT). Controls: - \\b mrs_bool/aliasedOutput [w] : by default, this control is set to true and the output of AutoCorrelation will be an alised time domain signal (as used by the original Marsyas0.1 code implemented by George Tzanetakis - MUST CHECK IF THIS MAKES SENSE!). Setting this control to false, the FFTs will be computed using the next power of 2 of the inSamples*2+1, which avoids alising in the iFFT step. In this mode, only the first inSamples of the autocorrleation function will be output (since the remaining ones are mirrored versions or zero valued). - \\b mrs_bool/setr0to1\" [w]: if set to true, the output will be normalized so that r_xx(0) = 1 Had to use a weird name because there already was a normalize control [AL]" . + +<BeatHistogram> a rdfs:Resource ; + dc:description "BeatHistogram Calculate Beat Histogram. The input should be the autocorrelation of either the time waveform or some kind of onset detection function." . + +<BeatHistogramFromPeaks> a rdfs:Resource ; + dc:description "BeatHistogramFromPeaks Calculate BeatHistograms from peaks represented as pairs of periodicity/amplitude (typically from an autocorrelation function)." . + +<BeatPhase> a rdfs:Resource ; + dc:description "Given a periodicity calculate best matching phase" . + +<Centroid> a rdfs:Resource ; + dc:description "Centroid of each time slice of observations Centroid computes the centroid of the observations for each time sample. The center is defined as the normalized first moment (center of gravity) of the observation vector." . + +<CrossCorrelation > a rdfs:Resource ; + dc:description "Computes the cross correlation of an input. Accepts N observations and returns N-1 observations, with each observation being the cross correlation of the inputs n and n-1. Controls: \"mrs_string/mode\" : This control sets the type of cross correlation. \"general\" is the default, and will compute the generalized cross correlation. \"phat\" will compute the generalized cross correlation with phase transform \"ml\" will compute a maximum likelihood cross correlation. This works well specifically for time delay estimation in noisy or reverberant environments. Note: inSamples should be 2^k or fft will not work properly. \\author Gabrielle Odowichuk" . + +<Daub4> a rdfs:Resource ; + dc:description "Daubechies4 WaveletStep Applies the Daubechies 4-coefficient wavelet filter as a WaveletStep for the WaveletPyramid algorithm. The code is is based on the Numerical Recipies wavelet code." . + +<Energy> a rdfs:Resource ; + dc:description "compute the Energy of the input observations into one column" . + +<EnhADRess> a rdfs:Resource ; + dc:description "Azimuth Discrimination and Resynthesis (EnhADRess) implementation, which takes a stereo input (i.e. input is expected to be the output of a parallel of two Spectrum MarSystems, one for each stereo channel), and outputs the magnitudes, phases and panning indexes for N/2+1 bins, stacked vertically: [Mag] [Phases] [Pan] This enhanced version of the ADRess algorithm was proposed by Cooney et al, \"An Enhanced implemantation of the ADRess Music Source Separation Algorithm\", 121st AES Convention, October 2006." . + +<EnhADRessStereoSpectrum> a rdfs:Resource ; + dc:description "Takes the output of the enhADRess and outputs the panning coefficient for each spectral bin (N/2+1 bins)." . + +<F0Analysis> a rdfs:Resource ; + dc:description "Compute F0s in input spectrum \\author Matthias Varewyck \\date 20090518 Controls: - \\b mrs_natural NrOfHarmonics [rw] : nr. of harmonics taken into account (excl. F0) - \\b mrs_real F0Weight [rw] : balance between F0 and higher harmonics - \\b mrs_real Attenuation [rw] : attenuation of higher harmonics - \\b mrs_real Tolerance_ [rw] : tolerance for harmonics to be assigned to F0 - \\b mrs_real LowestFo_ [rw] : lowest possible F0 - \\b mrs_real ChordEvidence_ [r] : evidence that input spectrum includes chord" . + +<Flux> a rdfs:Resource ; + dc:description "Flux calculate the flux between the current and prev. spectrum (e.g. output of PowerSpectrum) The flux is defined as the norm of the difference vector between two successive magnitue/power spectra, although different implementations are possible. Controls: - \\b mrs_string/mode [w]: select from the different available implementations for Flux: \"marsyas\" and \"DixonDAFX06\" - \\b mrs_bool/reset [rw] : clear and reset the memory buffer" . + +<Krumhansl_key_finder> a rdfs:Resource ; + dc:description "Krumhansl-Schmuckler Key-Finding Algorithm Performs simple chord detection using the Krumhansl-Schmuckler Key-Finding Algorithm. The input is a pitch class profile or chroma vector with 12 values one for each chromatic note. Controls:" . + +<Kurtosis> a rdfs:Resource ; + dc:description "Kurtosis Calculate the Kurtosis of the input observations. Typically used for characterizing the magnitude spectrum." . + +<LPC> a rdfs:Resource ; + dc:description "Compute Warped LPC coefficients, Pitch and Power [STILL UNDER TESTING!]. Linear Prediction Coefficients (LPC). Features commonly used in Speech Recognition research. This class is a modification of the original Marsyas0.1 LPC class. The following differences apply: - order now reflects the LPC order (and returns \\<order\\> coefficients plus pitch and gain) - It is possible to define a pole-shifting parameter, gamma (default value = 1.0 => no shifting) - It is possible to define a warping factor, lambda (defualt value = 0.0 => no warping) Code by Lus Gustavo Martins - lmartins@inescporto.pt May 2006" . + +<LPCC> a rdfs:Resource ; + dc:description "Convert LPC coefficients to Cepstrum coefficients. This MarSystem is expecting to receive at its input LPC coefficients + Pitch + Power, as output by the LPC MarSystem (see LPC.cpp/.h). It only converts the LPC coefficients to cepstral coefficients and ignores the pitch value received from LPC. Code by: Lus Gustavo Martins - lmartins@inescporto.pt November 2006" . + +<LSP> a rdfs:Resource ; + dc:description "Compute Linear Spectral Pair (LSP) coefficients Takes the output of ::LPC() and calculates the corresponding LSP values. See the LPC class implementation. Cobe by Lus Gustavo Martins - lmartins@inescporto.pt May 2006" . + +<MFCC> a rdfs:Resource ; + dc:description "MFCC Mel-Frequency Cepstral Coefficients. Takes as input the N/2+1 spectrum Magnitude points output by PowerSpectrum. Mel-Frequency cepstral coefficients are features frequently used in Speech Recognition. The code is based on the corresponding function in the Auditory Toolbox by Malcolm Slaney. \\see Spectrum, PowerSpectrum Controls: - \\b mrs_natural/coefficients [w]: the number of cepstral coefficients to calculate." . + +<MaxArgMax> a rdfs:Resource ; + dc:description "Calculate k maximums and their positions The output is : max1, argmax1, max2, argmax2, ...." . + +<MaxMin> a rdfs:Resource ; + dc:description "Calculate the maximum and minimum values for each observation signal (per slice). For each observation channel in each given slice, the maximum and minimum values is calculated. This MarSystem has no extra controls." . + +<Mean> a rdfs:Resource ; + dc:description "Mean calculate the mean of each row of observations" . + +<MeanAbsoluteDeviation> a rdfs:Resource ; + dc:description "Calculates the mean absolute deviation" . + +<MeddisHairCell> a rdfs:Resource ; + dc:description "MeddisHairCell for auditory models Directed port from the Auditory toolbox by Malcolm Slaney" . + +<Median> a rdfs:Resource ; + dc:description "Median calculate the median of each row of observations" . + +<MinArgMin> a rdfs:Resource ; + dc:description "Calculate k minimums and their positions The output is : min1, argmin1, min2, argmin2, ...." . + +<PCA> a rdfs:Resource ; + dc:description "Perform Principal Component Analysis Perform Principal Component Analysis (PCA) on all samples of the incoming realvec of data. The correlation method is taken, with a correlation matrix computed over all samples within the single input realvec. Eigenvalue/Eigenvector calculation is by the QL algorithm (ie. not suitable when the correlation matrix is singular or near singular). Output is the set of input samples projected onto the top \"npc\" (a MarSystem control) principal components." . + +<PeakInObservation> a rdfs:Resource ; + dc:description "Compute peaks in observation vector \\author Matthias Varewyck \\date 20090518 Controls: - \\b mrs_natural/HystLength [rw] : .. - \\b mrs_real/HystFactor [rw] : .." . + +<Peaker> a rdfs:Resource ; + dc:description "Pick peaks out of signal Peaker is used to select peaks(or valleys) from the input vector. Various parameters of the peak selection process can be adjusted. Controls: - \\b mrs_real/peakSpacing [w] : expressed in percentage of total vector length and is how much spacing you allow between the peaks - \\b mrs_real/peakStrength [w] : threshold compared to the RMS of the vector (should be renamed to peakStrengthRelRms to keep naming consistent, but this might break existing systems) - \\b mrs_real/peakStrengthAbs [w] : absolute threshold (might make sense e.g. for normalized spectra) - \\b mrs_real/peakStrengthRelMax [w] : threshold compared to global max of the vector (range: 0...1, example: 0.001 if all peaks with a level of more than 60dB below the maximum should be discarded - \\b mrs_real/peakStrengthRelThresh [w] : threshold compared to an adaptive threshold of the vector (lp filtered version of the signal); value is a factor that moves threshold up and down, e.g. value = 2 means that the lp filtered signal is moved up by 6dB - \\b mrs_real/peakStrengthTreshLpParam [w] : coefficient for the single pole lowpass for computing the adaptive threshold (between 0...1) - \\b mrs_natural/peakStart [w] : expressed in absolute positions of the vector and it just to adjust what part of the vector will be considered - \\b mrs_natural/peakEnd [w] : expressed in absolute positions of the vector length and it just to adjust what part of the vector will be considered - \\b mrs_natural/interpolation [w] : TODO - mlagrange? [!] - \\b mrs_real/peakGain [w] : TODO - mlagrange? [!]" . + +<PeakerOnset> a rdfs:Resource ; + dc:description "Detects if input contains a onset point PeakerOnset is based on the onset peak picking algorithm presented in: Dixon, S. (2006). Onset detection revisited. In Proc. International Conference on Digital Audio Effects (DAFx), Montreal, Canada. It takes as input an onset function over time (i.e. a row vector with the times series of a onset function like flux) and evaluates a specific point for onset presence, as below: Input = [zzzzzzzzzXyyy] Point \"X\" at the input will be evaluated. The onsetWinSize control specifies a \"look ahead\" parameter, i.e. how many samples (represented above as \"y\") after \"X\" will be used for evaluating if it is an onset or not (i.e. look ahead samples). Controls: - \\b mrs_natrual/lookAheadSamples [w]: specifies the \"look ahead\" nr of \"samples\" (the number of \"y\"s in the above example ) for the detection of an onset at the input. - \\b mrs_real/threshold [w]: specifies threshold (in % of local mean) for onset detection - \\b mrs_real/confidence [r]: outputs the confidence that point \"X\" is an onset (it will 0.0 if it is not detected as an onset) - \\b mrs_bool/onsetDetected [r]: flags if an onset was detected on point \"X\"." . + +<Pitch2Chroma> a rdfs:Resource ; + dc:description "Transform pitch to chroma - input = amplitude spectrum with peaks at frequency bins that represent pitches and values that represent evidences - output = chroma profile with chroma values ordered according to the circle of fifths, i.e. A, E,.. D \\author Matthias Varewyck \\date 20090518 Controls: - \\b mrs_real/SampleRate [rw] : sample rate of the input spectrum - \\b mrs_real/LowestPitch [rw] : lowest pitch taken into account - \\b mrs_natural/NotesPerOctave [rw] : nr. of notes per octave ([f 2*f]) - \\b mrs_natural/NrOfNotes [rw] : total nr. of notes to be taken into account - \\b mrs_natural/RefChromaIndex [rw] : index in chroma vector of the ref. pitch (= 440Hz)" . + +<PitchDiff> a rdfs:Resource ; + dc:description "Difference between detected and expected pitch Place this in a series after Yin (or any other pitch-detection MarSystem), and feed it the expected pitch as a control. Outputs the difference as a midi pitch value. Controls: - \\b mrs_real/expectedPitch [w] : expected pitch - \\b mrs_bool/ignoreOctaves [w] : useful if the pitch detection algorithm has octave errors, but is otherwise relatively accurate (default false) - \\b mrs_bool/absoluteValue [w] : outputs the absolute difference (default false)" . + +<Power> a rdfs:Resource ; + dc:description "compute the RMS Power of the input observations into one column" . + +<PowerSpectrum> a rdfs:Resource ; + dc:description "PowerSpectrum computes the magnitude/power of the complex spectrum Computes the magnitude/power/decibels/powerdensity of a complex spectrum (as output from the Spectrum MarSystem - see its documentation for info about the spectrum format used in Marsyas). PowerSpectrum takes N/2+1 complex spectrum bins and computes the corresponding N/2+1 power/magnitude/decibels/powerdensity real values. Controls: - \\b mrs_string/spectrumType [w] : choose between \"power\", \"magnitude\", \"decibels\", \"logmagnitude\" (for 1+log(magnitude*1000), \"logmagnitude2\" (for 1+log10(magnitude)) and \"powerdensity\" computations \\see Spectrum" . + +<PowerToAverageRatio> a rdfs:Resource ; + dc:description "PowerToAverageRatio (or Power-to-Average Ratio) of a window This calculates the PAR for a complete window of samples; it is similar to SCF (Spectral Crest Factor), however SCF calculates the PAR in various frequency bands of observations." . + +<Rms> a rdfs:Resource ; + dc:description "Rms energy of realvec Simple MarSystem example. Calculate the RMS energy of a realvec" . + +<Rolloff> a rdfs:Resource ; + dc:description "Rolloff of each time slice of observations Rolloff computes the rolloff of the observations for each time samle. It is defined as the frequency for which the sum of magnitudes of its lower frequencies are equal to percentage of the sum of magnitudes of its higher frequencies." . + +<RunningAutocorrelation> a rdfs:Resource ; + dc:description "Running calculation (across slices) of the autocorrelation values. This MarSystem calculates the autocorrelation function of the input signal defined by successive input slices. Unlike the AutoCorrelation MarSystem, the calculations are done across slice boundaries in a seamless fashion (RunningAutocorrelation keeps an internal buffer of the appropriate number of samples from previous slices to implement this feature). Calculations are done in time domain for time lags from 0 to a user defined maximum lag (in number of samples). Note that this assumes that the input slices are non overlapping slices. The autocorrelation values are laid out in the output slice along the time/samples dimension from lag zero to the maximum lag. Multiple input observation channels are supported. For example, if there are two input channels and the maximum lag is 4, the output slice will have two rows and five (not four) columns: \\f[\\begin{array}{ccccc} R_{xx}[0] & R_{xx}[1] & R_{xx}[2] & R_{xx}[3] & R_{xx}[4] \\\\ R_{yy}[0] & R_{yy}[1] & R_{yy}[2] & R_{yy}[3] & R_{yy}[4] \\\\ \\end{array}\\f] with \\f$R_{xx}[n]\\f$ the autocorrelation of the first channel for lag \\f$n\\f$ and \\f$R_{yy}[n]\\f$ the autocorrelation of the second channel. TODO: support overlap between slices (e.g. provide a control for skipping a certain amount of samples). Controls: - \\b mrs_natural/maxLag: the maximum time lag (in samples) to calculate - \\b mrs_bool/normalize: normalize the autocorrelation values on the value for lag = 0 (which is the energy of the signal). Note that the autocorrelation value for lag 0 will consequently be always 1 (unless the input signal is 0 everywhere). - \\b mrs_bool/doNotNormalizeForLag0: when normalizing the autocorrelation values, do not normalize the value for lag 0. - \\b mrs_bool/clear: clear the internal buffers to start fresh. - \\b mrs_bool/unfoldToObservations: instead of putting the autocorrelation values along the time/samples axis in the slice, they can also be laid out along the observation axis. Using the example from above, the output slice will have one column and 10 rows with values \\f$R_{xx}[0], R_{xx}[1], \\ldots, R_{xx}[4], R_{yy}[0], R_{yy}[1], \\ldots, R_{yy}[4] \\f$" . + +<RunningStatistics> a rdfs:Resource ; + dc:description "Gathers the running average, variance, standard deviation, etc. Outputs the running average and standard deviation of all the input so far. Controls: - \\b mrs_bool/enableMean: enable outputting of the mean values (on by default). - \\b mrs_bool/enableStddev: enable outputting of the standard deviation values (on by default). - \\b mrs_bool/enableSkewness: enable outputting of the skewness values (off by default). - \\b mrs_bool/clear: clear the internal buffers to start fresh. - \\b mrs_book/clearPerTick: clear the buffers at the start of each tick. This disables the \"running\" property of the calculations. \\todo: add kurtosis \\todo: add option to output running energy (we're calculating it anyway)" . + +<SNR> a rdfs:Resource ; + dc:description "Compute SNR and variations Computes the SNR between two mono audio signals. One signal is observation 0 and the other is observation 1. The output is: observation 0 is the Signal/Noise ratio in dB 10 * log10(\\frac{\\sum A^2}{\\sum A-B}) observation 1 is the SNR with optimized gain factor 10 * log10(\\frac{1}{1 - (\\frac{sum A B}{\\sqrt{\\sum A^2 \\sum B^2}})}) Controls: - \\b mrs_string/mode [rw] : sets the gain multiplier." . + +<SpectralFlatnessAllBands> a rdfs:Resource ; + dc:description "Calculates a single spectral flatness value. Similar to SFM, but that marsystem splits the observations into bands, whereas this one uses the whole range of observations to generate one number. It may be used to 'narrow in' on a specific range by putting a RemoveObservations marsystem before it." . + +<Spectrum> a rdfs:Resource ; + dc:description "Compute the complex spectrum of input window Computes the complex spectrum (N/2+1 points) of the input window using the Fast Fourier Transform (FFT). The output is a N-sized column vector (where N is the size of the input audio vector), using the following format: [Re(0), Re(N/2), Re(1), Im(1), Re(2), Im(2), ..., Re(N/2-1), Im(N/2-1)] Note that the DC and Nyquist frequencies only have real part, and are output as the two first coefficients in the vector. Overall, the output spectrum has N/2+1 unique points, corresponding to the positive half of the complex spectrum. \\note Only the first observation input channel is processed, the rest (if any) is ignored. \\see PowerSpectrum, fft" . + +<Spectrum2ACMChroma> a rdfs:Resource ; + dc:description "Transform an (amplitude) spectrum to a chroma profile \\author Matthias Varewyck \\date 20090518 \\todo - Check if parameters are independent on input sample rate (~= 8kHz) - Include check if provided (amplitude) spectrum was correctly computed - Include correct error handling (conform Marsyas rules) - Let the lowest F0 be higher than the diapason - Introduce a highest F0 additional to a lowest F0 - Add \"fan in combinator\" to simplify actual chroma profile computation This class implements the conversion of an (amplitude) spectrum to a chroma profile as described in \"a novel chroma representation of polyphonic music based on multiple pitch tracking techniques\" which was presented at the 16th ACM International Conference on Multimedia. The method computes the set of pitches that best explains the salient frequencies present in the (amplitude) spectrum. The method results in (1) a chroma profile and (2) a chord evidence. (1) The chroma profile represents the normalized pitches after they were folded to one octave (2) The chord evidence represents the probability that a chord occurs in the examined frame. For an example, see the function \"toy_with_chroma\" in the mudbox. Controls: - \\b mrs_natural/NrOfHarmonics [rw] : adjust the number of harmonics in F0 detection (should be >0) - \\b mrs_real/F0Weight [rw] : adjust the balance between F0 and its harmonics (between 0 and 1) - \\b mrs_real/LowestF0 [rw] : adjust the lowest F0 to be detected (between 0 and Nyquist frequency) - \\b mrs_real/ChordEvidence [r] : store the chord evidence of the last examined frame" . + +<Spectrum2Chroma> a rdfs:Resource ; + dc:description "Convert spectrum magnitude (e.g. output from PowerSpectrum MarSystem) into a Chroma vector representation. Based in the fft2chromamx.m MATLAB script by Dan Ellis: http://www.ee.columbia.edu/~dpwe/resources/matlab/chroma-ansyn/#1 Controls: - \\b mrs_natural/nbins [w] : sets the number of chroma bins to output (default = 12, i.e. chromatic diatonic) - \\b mrs_real/middleAfreq [w] : sets the frequency (in Hz) to be used for the middle A pitch (A4) - \\b mrs_real/weightCenterFreq [w] : sets the Gaussian weighting center frequency (in Hz) - \\b mrs_real/weightStdDev [w] : sets the Gaussian weighting StdDev (in octaves)" . + +<Spectrum2Mel> a rdfs:Resource ; + dc:description "Convert spectrum magnitude (e.g. output from PowerSpectrum MarSystem) into Mel frequency scale. In order to duplicate the mel matrix in Slaney's mfcc.m use the following parameters: - fftsize = 512 - srate = 8000Hz - melBands = 40 - bandWidth = 1.0 - bandLowEdge = 133.33 - bandHighEdge = 6855.5 - constAmp = false Based in the fft2melmx.m MATLAB script by Dan Ellis: http://labrosa.ee.columbia.edu/projects/coversongs/ Controls: - \\b mrs_natural/melBands [w] : sets the number of Mel bands to output (default = 40, i.e. one per bark) - \\b mrs_real/bandWidth [w] : sets the constant width of each band relative to standard Mel (default 1.0) - \\b mrs_real/bandLowEdge [w] : sets the frequency (in Hz) of the lowest band edge (default 0.0, but 133.33 is a common standard (to skip LF)) - \\b mrs_real/bandHighEdge [w] : sets frequency in Hz of upper edge (default audio srate/2) - \\b mrs_bool/htkMel [w] : use HTK's version of the mel curve, not Slaney's - \\b mrs_bool/constAmp [w] : make integration windows peak at 1, not sum to 1" . + +<Standard Deviation> a rdfs:Resource ; + dc:description "Standard Deviation of each row of observations Calculates the standard deviation of each row of observations. The resulting standard deviations are returned as a column vector." . + +<StereoSpectrum> a rdfs:Resource ; + dc:description "StereoSpectrum computes the panning index for each spectrum bin of a stereo input (i.e. input is expected to be the output of a parallel of two Spectrum MarSystems, one for each stereo channel)." . + +<StereoSpectrumFeatures> a rdfs:Resource ; + dc:description "StereoSpectrumFeatures capture panning information After computing the Stereo Spectrum we can summarize it by extracting features using the StereoSpectrumFeatures." . + +<StereoSpectrumSources> a rdfs:Resource ; + dc:description "StereoSpectrumSources estimates the number of sources placed into different stereo positions. After computing the Stereo Spectrum we can try to estimate the number of sources playing in different stereo positions." . + +<TriangularFilterBank > a rdfs:Resource ; + dc:description "Triangular FilterBank Takes as input the N/2+1 spectrum Magnitude points output by PowerSpectrum. For example it can be used to compute a Mel-scale or Constant-Q filterbank. \\see Spectrum, PowerSpectrum Controls: - \\b mrs_natural/coefficients [w]: the number of cepstral coefficients to calculate." . + +<WaveletPyramid> a rdfs:Resource ; + dc:description "Pyramid wavelet algorithm Discrete Wavelet Transform (DWT) pyramid algorithm. Based on the Numerical Recipies wavelet code." . + +<Yin> a rdfs:Resource ; + dc:description "Pitch detection using the YIN algorithm This algorithm was developped by A. de Cheveigne and H. Kawahara and published in: De Cheveigne, A., Kawahara, H. (2002) \"YIN, a fundamental frequency estimator for speech and music\", J. Acoust. Soc. Am. 111, 1917-1930. See http://recherche.ircam.fr/equipes/pcm/pub/people/cheveign.html This code was adapted from aubio (http://aubio.org) by sness. THIS MARSYSTEM IS VERY SIMILAR TO AUBIO_YIN, BUT DO NOT DELETE IT BECAUSE I NEED IT. - Graham Controls: - \\b mrs_real/tolerance [w] : sets the tolerance of the yin algorithm - \\b mrs_real/frequency_min [w] : limits the search to frequencies above or equal to this - \\b mrs_real/frequency_max [w] : limits the search to frequencies below or equal to this (set to 0 to disable)" . + +<ZeroCrossings> a rdfs:Resource ; + dc:description "Time-domain ZeroCrossings Basically counts the number of times the input signal crosses the zero line." . +
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/rdfn3/af-PsySound3.n3 Mon Feb 25 14:40:54 2013 +0000 @@ -0,0 +1,17 @@ +@prefix PsySound3: <file:///Users/alo/MusicOntology/features/rdf/> . +@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . + +PsySound3:Loudness a rdfs:Resource . + +PsySound3:Multiplicity a rdfs:Resource . + +PsySound3:PureTonalness a rdfs:Resource . + +PsySound3:Sharpness a rdfs:Resource . + +PsySound3:SpectralDissonance a rdfs:Resource . + +PsySound3:TimbralWidth a rdfs:Resource . + +PsySound3:TonalDissonance a rdfs:Resource . +
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/rdfn3/af-SuperCollider.n3 Mon Feb 25 14:40:54 2013 +0000 @@ -0,0 +1,51 @@ +@prefix SuperCollider: <file:///Users/alo/MusicOntology/features/rdf/> . +@prefix dc: <http://purl.org/dc/elements/1.1/> . +@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . + +SuperCollider:BeatTrack a rdfs:Resource ; + dc:description "Autocorrelation based beat tracker" . + +SuperCollider:BeatTrack2 a rdfs:Resource ; + dc:description "based on exhaustively testing particular template patterns against feature streams" . + +SuperCollider:Chromagram a rdfs:Resource ; + dc:description "measures the energy at particular chroma within an nTET tuning system" . + +SuperCollider:Crest a rdfs:Resource ; + dc:description "measures the \"crest factor\" of a time-domain signal, i.e. the ratio of the absolute peak to the absolute mean over a certain time period" . + +SuperCollider:KeyTrack a rdfs:Resource ; + dc:description "A (12TET major/minor) key tracker based on a pitch class profile of energy across FFT bins and matching this to templates for major and minor scales in all transpositions. It assumes a 440 Hz concert A reference. Output is 0-11 C major to B major, 12-23 C minor to B minor." . + +SuperCollider:Loudness a rdfs:Resource ; + dc:description "A perceptual loudness function which outputs loudness in sones; this is a variant of an MP3 perceptual model, summing excitation in ERB bands. It models simple spectral and temporal masking, with equal loudness contour correction in ERB bands to obtain phons (relative dB), then a phon to sone transform. The final output is typically in the range of 0 to 64 sones, though higher values can occur with specific synthesised stimuli." . + +SuperCollider:MFCC a rdfs:Resource ; + dc:description "Generates a set of MFCCs; these are obtained from a band-based frequency representation (using the Mel scale by default), and then a discrete cosine transform (DCT). The DCT is an efficient approximation for principal components analysis, so that it allows a compression, or reduction of dimensionality, of the data, in this case reducing 42 band readings to a smaller set of MFCCs. A small number of features (the coefficients) end up describing the spectrum. The MFCCs are commonly used as timbral descriptors." . + +SuperCollider:Onsets a rdfs:Resource ; + dc:description "An onset detector for musical audio signals" . + +SuperCollider:Pitch a rdfs:Resource . + +SuperCollider:SpectralCentroid a rdfs:Resource ; + dc:description "the weighted mean frequency, or the \"centre of mass\" of the spectrum" . + +SuperCollider:SpectralCrest a rdfs:Resource ; + dc:description "produces the spectral crest measure, which is an indicator of the \"peakiness\" of the spectral energy distribution" . + +SuperCollider:SpectralFlatness a rdfs:Resource ; + dc:description "a power spectrum's geometric mean divided by its arithmetic mean" . + +SuperCollider:SpectralPercentile a rdfs:Resource ; + dc:description "calculates the cumulative distribution of the frequency spectrum, and outputs the frequency value which corresponds to the desired percentile" . + +SuperCollider:SpectralSlope a rdfs:Resource ; + dc:description "measures the spectral slope, which is the slope of the linear correlation line derived from the spectral magnitudes" . + +SuperCollider:SpectralSpread a rdfs:Resource ; + dc:description "measures the spectral spread, which is the magnitude-weighted variance" . + +SuperCollider:ZeroCrossingRate a rdfs:Resource ; + dc:description "Outputs a frequency based upon the distance between interceptions of the X axis. The X intercepts are determined via linear interpolation so this gives better than just integer wavelength resolution. This is a very crude pitch follower, but can be useful in some situations." . +
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/rdfn3/af-Vamp.n3 Mon Feb 25 14:40:54 2013 +0000 @@ -0,0 +1,788 @@ +@prefix Vamp: <file:///Users/alo/MusicOntology/features/rdf/> . +@prefix dc: <http://purl.org/dc/elements/1.1/> . +@prefix local: <http://sovarr.c4dm.eecs.qmul.ac.uk/features/> . +@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . + +<PitchContours:All> a rdfs:Resource ; + local:domain "time" ; + local:feature "Pitch Contours: All (MELODIA - Melody Extraction (intermediate steps))" ; + local:output "Dense" ; + local:source "Music Technology Group, Universitat Pompeu Fabra" . + +<PitchContours:Melody> a rdfs:Resource ; + local:domain "time" ; + local:feature "Pitch Contours: Melody (MELODIA - Melody Extraction (intermediate steps))" ; + local:output "Dense" ; + local:source "Music Technology Group, Universitat Pompeu Fabra" . + +Vamp:AdaptiveSpectrogram a rdfs:Resource ; + dc:description "Produce an adaptive spectrogram by adaptive selection from spectrograms at multiple resolutions" ; + local:domain "time" ; + local:feature "Adaptive Spectrogram" ; + local:output "Dense" ; + local:source "Queen Mary, University of London" . + +Vamp:AubioBeatTracker a rdfs:Resource ; + dc:description "Estimate the musical tempo and track beat positions" ; + local:domain "time" ; + local:feature "Aubio Beat Tracker" ; + local:source "Paul Brossier (method by Matthew Davies, plugin by Chris Cannam)" . + +Vamp:AubioNoteTracker a rdfs:Resource ; + dc:description "Estimate note onset positions, pitches and durations" ; + local:domain "time" ; + local:feature "Aubio Note Tracker" ; + local:output "Sparse" ; + local:source "Paul Brossier (plugin by Chris Cannam)" . + +Vamp:AubioOnsetDetector a rdfs:Resource ; + dc:description "Estimate note onset times" ; + local:domain "time" ; + local:feature "Aubio Onset Detector" ; + local:output "Sparse" ; + local:source "Paul Brossier (plugin by Chris Cannam)" . + +Vamp:AubioPitchDetector a rdfs:Resource ; + dc:description "Track estimated note pitches" ; + local:domain "time" ; + local:feature "Aubio Pitch Detector" ; + local:output "Sparse" ; + local:source "Paul Brossier (plugin by Chris Cannam)" . + +Vamp:AubioSilenceDetector a rdfs:Resource ; + dc:description "Detect levels below a certain threshold" ; + local:domain "time" ; + local:feature "Aubio Silence Detector" ; + local:source "Paul Brossier (plugin by Chris Cannam)" . + +Vamp:Autocorrelation a rdfs:Resource ; + dc:description "Extract the autocorrelation of an audio signal" ; + local:domain "time" ; + local:feature "Autocorrelation" ; + local:output "Dense" ; + local:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" . + +Vamp:AverageDeviation a rdfs:Resource ; + dc:description "Extract the average deviation of a range of values" ; + local:domain "frequency" ; + local:feature "Average Deviation" ; + local:output "Dense" ; + local:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" . + +Vamp:AverageMagnitudeDifferenceFunction a rdfs:Resource ; + dc:description "Extract the AMDF of an audio signal" ; + local:domain "time" ; + local:feature "Average Magnitude Difference Function" ; + local:output "Dense" ; + local:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" . + +Vamp:AverageSquaredDifferenceFunction a rdfs:Resource ; + dc:description "Extract the ASDF of an audio signal" ; + local:domain "time" ; + local:feature "Average Squared Difference Function" ; + local:output "Dense" ; + local:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" . + +Vamp:BarandBeatTracker a rdfs:Resource ; + dc:description "Estimate bar and beat locations" ; + local:domain "time" ; + local:feature "Bar and Beat Tracker" ; + local:source "Queen Mary, University of London" . + +Vamp:BarkCoefficients a rdfs:Resource ; + dc:description "Extract bark coefficients from an audio spectrum" ; + local:domain "frequency" ; + local:feature "Bark Coefficients" ; + local:output "Dense" ; + local:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" . + +Vamp:Bars a rdfs:Resource ; + local:domain "time" ; + local:feature "Bars (Bar and Beat Tracker)" ; + local:output "Sparse" ; + local:source "Queen Mary, University of London" . + +Vamp:BassChromagram a rdfs:Resource ; + local:domain "frequency" ; + local:feature "Bass Chromagram (NNLS Chroma)" ; + local:output "Dense" ; + local:source "Matthias Mauch" . + +Vamp:BeatCount a rdfs:Resource ; + local:domain "time" ; + local:feature "Beat Count (Bar and Beat Tracker)" ; + local:output "Sparse" ; + local:source "Queen Mary, University of London" . + +Vamp:BeatSpectra a rdfs:Resource ; + local:domain "time" ; + local:feature "Beat Spectra (Similarity)" ; + local:output "Sparse" ; + local:source "Queen Mary, University of London" . + +Vamp:BeatSpectralDifference a rdfs:Resource ; + local:domain "time" ; + local:feature "Beat Spectral Difference (Bar and Beat Tracker)" ; + local:output "Sparse" ; + local:source "Queen Mary, University of London" . + +Vamp:Beats a rdfs:Resource ; + local:domain "frequency", + "time" ; + local:feature "Beats (Aubio Beat Tracker)", + "Beats (Bar and Beat Tracker)", + "Beats (Tempo and Beat Tracker)" ; + local:output "Sparse" ; + local:source "Paul Brossier (method by Matthew Davies, plugin by Chris Cannam)", + "Queen Mary, University of London" . + +Vamp:Centroid a rdfs:Resource ; + dc:description "Marsyas - Batch Feature Extract - Centroid" ; + local:domain "time" ; + local:feature "Marsyas - Batch Feature Extract - Centroid" ; + local:output "Dense" ; + local:source "Marsyas Plugins" . + +Vamp:ChordEstimate a rdfs:Resource ; + local:domain "frequency" ; + local:feature "Chord Estimate (Chordino)" ; + local:output "Sparse" ; + local:source "Matthias Mauch" . + +Vamp:Chordino a rdfs:Resource ; + dc:description "Chordino provides a simple chord transcription based on NNLS Chroma (as in the NNLS Chroma plugin). Chord profiles given by the user in the file chord.dict are used to calculate frame-wise chord similarities. A simple (non-state-of-the-art!) algorithm smoothes these to provide a chord transcription using a standard HMM/Viterbi approach." ; + local:domain "frequency" ; + local:feature "Chordino" ; + local:source "Matthias Mauch" . + +Vamp:ChromaMeans a rdfs:Resource ; + local:domain "frequency" ; + local:feature "Chroma Means (Chromagram)" ; + local:output "Dense" ; + local:source "Queen Mary, University of London" . + +Vamp:Chromagram a rdfs:Resource ; + dc:description "Extract a series of tonal chroma vectors from the audio" ; + local:domain "frequency" ; + local:feature "Chromagram", + "Chromagram (NNLS Chroma)" ; + local:output "Dense" ; + local:source "Matthias Mauch", + "Queen Mary, University of London" . + +Vamp:ChromagramandBassChromagram a rdfs:Resource ; + local:domain "frequency" ; + local:feature "Chromagram and Bass Chromagram (NNLS Chroma)" ; + local:output "Dense" ; + local:source "Matthias Mauch" . + +Vamp:Coefficients a rdfs:Resource ; + local:domain "frequency" ; + local:feature "Coefficients (Mel-Frequency Cepstral Coefficients)" ; + local:output "Dense" ; + local:source "Queen Mary, University of London" . + +Vamp:Constant-QSpectrogram a rdfs:Resource ; + dc:description "Extract a spectrogram with constant ratio of centre frequency to resolution from the input audio" ; + local:domain "frequency" ; + local:feature "Constant-Q Spectrogram" ; + local:output "Dense" ; + local:source "Queen Mary, University of London" . + +Vamp:DiscreteCosineTransform a rdfs:Resource ; + dc:description "Extract the DCT of an audio signal" ; + local:domain "time" ; + local:feature "Discrete Cosine Transform" ; + local:output "Dense" ; + local:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" . + +Vamp:DiscreteWaveletTransform a rdfs:Resource ; + dc:description "Visualisation by scalogram" ; + local:domain "time" ; + local:feature "Discrete Wavelet Transform" ; + local:output "Dense" ; + local:source "Queen Mary, University of London" . + +Vamp:DistanceMatrix a rdfs:Resource ; + local:domain "time" ; + local:feature "Distance Matrix (Similarity)" ; + local:output "Dense" ; + local:source "Queen Mary, University of London" . + +Vamp:DistancefromFirstChannel a rdfs:Resource ; + local:domain "time" ; + local:feature "Distance from First Channel (Similarity)" ; + local:output "Dense" ; + local:source "Queen Mary, University of London" . + +Vamp:FeatureMeans a rdfs:Resource ; + local:domain "time" ; + local:feature "Feature Means (Similarity)" ; + local:output "Dense" ; + local:source "Queen Mary, University of London" . + +Vamp:FeatureVariances a rdfs:Resource ; + local:domain "time" ; + local:feature "Feature Variances (Similarity)" ; + local:output "Dense" ; + local:source "Queen Mary, University of London" . + +Vamp:FundamentalFrequency a rdfs:Resource ; + dc:description "Extract the fundamental frequency of an audio signal" ; + local:domain "time" ; + local:feature "Fundamental Frequency" ; + local:output "Dense" ; + local:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" . + +<file:///Users/alo/MusicOntology/features/rdf/FundamentalFrequency(failsafe)> a rdfs:Resource ; + dc:description "Extract the fundamental frequency of an audio signal (failsafe)" ; + local:domain "time" ; + local:feature "Fundamental Frequency (failsafe)" ; + local:output "Dense" ; + local:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" . + +Vamp:HPCP a rdfs:Resource ; + dc:description "Return the instantaneous evolution of HPCP (Harmonic Pitch Class Profile) of a signal." ; + local:domain "frequency" ; + local:feature "HPCP" ; + local:output "Dense" ; + local:source "Music Technology Group, Universitat Pompeu Fabra" . + +Vamp:HarmonicChangeValue a rdfs:Resource ; + local:domain "frequency" ; + local:feature "Harmonic Change Value (Chordino)" ; + local:output "Dense" ; + local:source "Matthias Mauch" . + +Vamp:HarmonicSpectrum a rdfs:Resource ; + dc:description "Extract the harmonics from an audio spectrum" ; + local:domain "frequency" ; + local:feature "Harmonic Spectrum" ; + local:output "Dense" ; + local:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" . + +Vamp:HighestValue a rdfs:Resource ; + dc:description "Extract the highest value from a given range" ; + local:domain "frequency" ; + local:feature "Highest Value" ; + local:output "Dense" ; + local:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" . + +Vamp:IBT-INESCBeatTracker a rdfs:Resource ; + dc:description "Estimates beat locations and tempo (off-line [default] and on-line modes of operation)" ; + local:domain "frequency" ; + local:feature "IBT - INESC Beat Tracker" ; + local:output "Sparse" ; + local:source "Marsyas Plugins" . + +Vamp:Inharmonicity a rdfs:Resource ; + dc:description "Extract the inharmonicity of an audio spectrum" ; + local:domain "frequency" ; + local:feature "Inharmonicity" ; + local:output "Dense" ; + local:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" . + +Vamp:IrregularityI a rdfs:Resource ; + dc:description "Extract the irregularity (type I) of an audio spectrum" ; + local:domain "frequency" ; + local:feature "Irregularity I" ; + local:output "Dense" ; + local:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" . + +Vamp:IrregularityII a rdfs:Resource ; + dc:description "Extract the irregularity (type II) of an audio spectrum" ; + local:domain "frequency" ; + local:feature "Irregularity II" ; + local:output "Dense" ; + local:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" . + +Vamp:Key a rdfs:Resource ; + local:domain "time" ; + local:feature "Key (Key Detector)" ; + local:output "Sparse" ; + local:source "Queen Mary, University of London" . + +Vamp:KeyDetector a rdfs:Resource ; + dc:description "Estimate the key of the music" ; + local:domain "time" ; + local:feature "Key Detector" ; + local:source "Queen Mary, University of London" . + +Vamp:KeyMode a rdfs:Resource ; + local:domain "time" ; + local:feature "Key Mode (Key Detector)" ; + local:output "Sparse" ; + local:source "Queen Mary, University of London" . + +Vamp:KeyStrengthPlot a rdfs:Resource ; + local:domain "time" ; + local:feature "Key Strength Plot (Key Detector)" ; + local:output "Dense" ; + local:source "Queen Mary, University of London" . + +Vamp:Kurtosis a rdfs:Resource ; + dc:description "Extract the kurtosis of a range of values" ; + local:domain "frequency" ; + local:feature "Kurtosis" ; + local:output "Dense" ; + local:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" . + +Vamp:LineSpectralPairs a rdfs:Resource ; + dc:description "Marsyas - Batch Feature Extract - Line Spectral Pairs" ; + local:domain "time" ; + local:feature "Marsyas - Batch Feature Extract - Line Spectral Pairs" ; + local:output "Dense" ; + local:source "Marsyas Plugins" . + +Vamp:LinearPredictionCepstralCoefficients a rdfs:Resource ; + dc:description "Marsyas - Batch Feature Extract - Linear Prediction Cepstral Coefficients" ; + local:domain "time" ; + local:feature "Marsyas - Batch Feature Extract - Linear Prediction Cepstral Coefficients" ; + local:output "Dense" ; + local:source "Marsyas Plugins" . + +Vamp:LocalTuning a rdfs:Resource ; + local:domain "frequency" ; + local:feature "Local Tuning (Tuning)" ; + local:output "Dense" ; + local:source "Matthias Mauch" . + +Vamp:Log-FrequencySpectrum a rdfs:Resource ; + local:domain "frequency" ; + local:feature "Log-Frequency Spectrum (NNLS Chroma)" ; + local:output "Dense" ; + local:source "Matthias Mauch" . + +Vamp:Log-LikelihoodofChordEstimate a rdfs:Resource ; + local:domain "frequency" ; + local:feature "Log-Likelihood of Chord Estimate (Chordino)" ; + local:output "Dense" ; + local:source "Matthias Mauch" . + +Vamp:Loudness a rdfs:Resource ; + dc:description "Extract the loudness of an audio signal from its spectrum" ; + local:domain "frequency" ; + local:feature "Loudness" ; + local:output "Dense" ; + local:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" . + +Vamp:LowestValue a rdfs:Resource ; + dc:description "Extract the lowest value from a given range" ; + local:domain "frequency" ; + local:feature "Lowest Value" ; + local:output "Dense" ; + local:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" . + +Vamp:MELODIA-MelodyExtraction a rdfs:Resource ; + dc:description "Estimates the melody pitch in polyphonic music (also good for homophonic and monophonic music). Segments without melody are indicated by zero or negative values. For further details please read: J. Salamon and E. Gomez, \"Melody Extraction from Polyphonic Music Signals using Pitch Contour Characteristics\", IEEE Transactions on Audio, Speech and Language Processing, 20(6):1759-1770, 2012. We would highly appreciate the above reference being cited in publications of work in which this plug-in was used." ; + local:domain "time" ; + local:feature "MELODIA - Melody Extraction" ; + local:output "Dense" ; + local:source "Music Technology Group, Universitat Pompeu Fabra" . + +<file:///Users/alo/MusicOntology/features/rdf/MELODIA-MelodyExtraction(intermediatesteps)> a rdfs:Resource ; + dc:description "Provides visualisations of the intermediate steps calculated by the melody extraction algorithm implemented in the MELODIA - Melody Extraction plug-in. For further details please read: J. Salamon and E. Gomez, \"Melody Extraction from Polyphonic Music Signals using Pitch Contour Characteristics\", IEEE Transactions on Audio, Speech and Language Processing, 20(6):1759-1770, 2012. We would highly appreciate the above reference being cited in publications of work in which this plug-in was used." ; + local:domain "time" ; + local:feature "MELODIA - Melody Extraction (intermediate steps)" ; + local:source "Music Technology Group, Universitat Pompeu Fabra" . + +Vamp:Mean a rdfs:Resource ; + dc:description "Extract the mean of a range of values" ; + local:domain "frequency" ; + local:feature "Mean" ; + local:output "Dense" ; + local:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" . + +Vamp:MeansofCoefficients a rdfs:Resource ; + local:domain "frequency" ; + local:feature "Means of Coefficients (Mel-Frequency Cepstral Coefficients)" ; + local:output "Dense" ; + local:source "Queen Mary, University of London" . + +Vamp:Mel-FrequencyCepstralCoefficients a rdfs:Resource ; + dc:description "Calculate a series of MFCC vectors from the audio", + "Extract MFCC from an audio spectrum", + "Marsyas - Batch Feature Extract - Mel-Frequency Cepstral Coefficients" ; + local:domain "frequency", + "time" ; + local:feature "Marsyas - Batch Feature Extract - Mel-Frequency Cepstral Coefficients", + "Mel-Frequency Cepstral Coefficients" ; + local:output "Dense" ; + local:source "Marsyas Plugins", + "Queen Mary, University of London", + "libxtract by Jamie Bullock (plugin by Chris Cannam)" . + +Vamp:NNLSChroma a rdfs:Resource ; + dc:description "This plugin provides a number of features derived from a DFT-based log-frequency amplitude spectrum: some variants of the log-frequency spectrum, including a semitone spectrum derived from approximate transcription using the NNLS algorithm; and based on this semitone spectrum, different chroma features." ; + local:domain "frequency" ; + local:feature "NNLS Chroma" ; + local:source "Matthias Mauch" . + +Vamp:Noisiness a rdfs:Resource ; + dc:description "Extract the noisiness of an audio spectrum" ; + local:domain "frequency" ; + local:feature "Noisiness" ; + local:output "Dense" ; + local:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" . + +Vamp:Non-SilentRegions a rdfs:Resource ; + local:domain "time" ; + local:feature "Non-Silent Regions (Aubio Silence Detector)" ; + local:output "Sparse" ; + local:source "Paul Brossier (plugin by Chris Cannam)" . + +Vamp:Non-zerocount a rdfs:Resource ; + dc:description "Extract the number of non-zero elements in an input spectrum" ; + local:domain "frequency" ; + local:feature "Non-zero count" ; + local:output "Dense" ; + local:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" . + +Vamp:NoteOnsetDetector a rdfs:Resource ; + dc:description "Estimate individual note onset positions" ; + local:domain "frequency" ; + local:feature "Note Onset Detector" ; + local:source "Queen Mary, University of London" . + +Vamp:NoteOnsets a rdfs:Resource ; + local:domain "frequency" ; + local:feature "Note Onsets (Note Onset Detector)" ; + local:output "Sparse" ; + local:source "Queen Mary, University of London" . + +Vamp:NoteRepresentationofChordEstimate a rdfs:Resource ; + local:domain "frequency" ; + local:feature "Note Representation of Chord Estimate (Chordino)" ; + local:output "Sparse" ; + local:source "Matthias Mauch" . + +<file:///Users/alo/MusicOntology/features/rdf/Odd/evenHarmonicRatio> a rdfs:Resource ; + dc:description "Extract the odd-to-even harmonic ratio of an audio spectrum" ; + local:domain "frequency" ; + local:feature "Odd/even Harmonic Ratio" ; + local:output "Dense" ; + local:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" . + +Vamp:OnsetDetectionFunction a rdfs:Resource ; + local:domain "frequency" ; + local:feature "Onset Detection Function (Note Onset Detector)", + "Onset Detection Function (Tempo and Beat Tracker)" ; + local:output "Dense" ; + local:source "Queen Mary, University of London" . + +Vamp:OrderedDistancesfromFirstChannel a rdfs:Resource ; + local:domain "time" ; + local:feature "Ordered Distances from First Channel (Similarity)" ; + local:output "Dense" ; + local:source "Queen Mary, University of London" . + +Vamp:PeakSpectrum a rdfs:Resource ; + dc:description "Extract the spectral peaks from an audio spectrum" ; + local:domain "frequency" ; + local:feature "Peak Spectrum" ; + local:output "Dense" ; + local:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" . + +Vamp:PolyphonicTranscription a rdfs:Resource ; + dc:description "Transcribe the input audio to estimated notes" ; + local:domain "time" ; + local:feature "Polyphonic Transcription" ; + local:output "Sparse" ; + local:source "Queen Mary, University of London" . + +Vamp:RMSAmplitude a rdfs:Resource ; + dc:description "Extract the RMS amplitude of an audio signal" ; + local:domain "time" ; + local:feature "RMS Amplitude" ; + local:output "Dense" ; + local:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" . + +Vamp:SalienceFunction a rdfs:Resource ; + local:domain "time" ; + local:feature "Salience Function (MELODIA - Melody Extraction (intermediate steps))" ; + local:output "Dense" ; + local:source "Music Technology Group, Universitat Pompeu Fabra" . + +Vamp:Segmenter a rdfs:Resource ; + dc:description "Divide the track into a sequence of consistent segments" ; + local:domain "time" ; + local:feature "Segmenter" ; + local:output "Sparse" ; + local:source "Queen Mary, University of London" . + +Vamp:SemitoneSpectrum a rdfs:Resource ; + local:domain "frequency" ; + local:feature "Semitone Spectrum (NNLS Chroma)" ; + local:output "Dense" ; + local:source "Matthias Mauch" . + +Vamp:SilenceTest a rdfs:Resource ; + local:domain "time" ; + local:feature "Silence Test (Aubio Silence Detector)" ; + local:output "Sparse" ; + local:source "Paul Brossier (plugin by Chris Cannam)" . + +Vamp:SilentRegions a rdfs:Resource ; + local:domain "time" ; + local:feature "Silent Regions (Aubio Silence Detector)" ; + local:output "Sparse" ; + local:source "Paul Brossier (plugin by Chris Cannam)" . + +Vamp:Similarity a rdfs:Resource ; + dc:description "Return a distance matrix for similarity between the input audio channels" ; + local:domain "time" ; + local:feature "Similarity" ; + local:source "Queen Mary, University of London" . + +Vamp:Skewness a rdfs:Resource ; + dc:description "Extract the skewness of a range of values" ; + local:domain "frequency" ; + local:feature "Skewness" ; + local:output "Dense" ; + local:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" . + +Vamp:SmoothedDetectionFunction a rdfs:Resource ; + local:domain "frequency" ; + local:feature "Smoothed Detection Function (Note Onset Detector)" ; + local:output "Sparse" ; + local:source "Queen Mary, University of London" . + +Vamp:SpectralAverageDeviation a rdfs:Resource ; + dc:description "Extract the average deviation of an audio spectrum" ; + local:domain "frequency" ; + local:feature "Spectral Average Deviation" ; + local:output "Dense" ; + local:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" . + +Vamp:SpectralCentroid a rdfs:Resource ; + dc:description "Extract the spectral centroid of an audio spectrum" ; + local:domain "frequency" ; + local:feature "Spectral Centroid" ; + local:output "Dense" ; + local:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" . + +Vamp:SpectralCrestFactor a rdfs:Resource ; + dc:description "Marsyas - Batch Feature Extract - Spectral Crest Factor" ; + local:domain "time" ; + local:feature "Marsyas - Batch Feature Extract - Spectral Crest Factor" ; + local:output "Dense" ; + local:source "Marsyas Plugins" . + +Vamp:SpectralCrestMeasure a rdfs:Resource ; + dc:description "Extract the spectral crest measure of an audio spectrum" ; + local:domain "frequency" ; + local:feature "Spectral Crest Measure" ; + local:output "Dense" ; + local:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" . + +Vamp:SpectralFlatness a rdfs:Resource ; + dc:description "Extract the spectral flatness of an audio spectrum" ; + local:domain "frequency" ; + local:feature "Spectral Flatness" ; + local:output "Dense" ; + local:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" . + +Vamp:SpectralFlatnessMeasure a rdfs:Resource ; + dc:description "Marsyas - Batch Feature Extract - Spectral Flatness Measure" ; + local:domain "time" ; + local:feature "Marsyas - Batch Feature Extract - Spectral Flatness Measure" ; + local:output "Dense" ; + local:source "Marsyas Plugins" . + +Vamp:SpectralKurtosis a rdfs:Resource ; + dc:description "Extract the kurtosis of an audio spectrum" ; + local:domain "frequency" ; + local:feature "Spectral Kurtosis" ; + local:output "Dense" ; + local:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" . + +Vamp:SpectralRolloff a rdfs:Resource ; + dc:description "Extract the rolloff point of an audio spectrum", + "Marsyas - Batch Feature Extract - Spectral Rolloff" ; + local:domain "frequency", + "time" ; + local:feature "Marsyas - Batch Feature Extract - Spectral Rolloff", + "Spectral Rolloff" ; + local:output "Dense" ; + local:source "Marsyas Plugins", + "libxtract by Jamie Bullock (plugin by Chris Cannam)" . + +Vamp:SpectralSharpness a rdfs:Resource ; + dc:description "Extract the spectral sharpness of an audio spectrum" ; + local:domain "frequency" ; + local:feature "Spectral Sharpness" ; + local:output "Dense" ; + local:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" . + +Vamp:SpectralSkewness a rdfs:Resource ; + dc:description "Extract the skewness of an audio spectrum" ; + local:domain "frequency" ; + local:feature "Spectral Skewness" ; + local:output "Dense" ; + local:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" . + +Vamp:SpectralSlope a rdfs:Resource ; + dc:description "Extract the spectral slope of an audio spectrum" ; + local:domain "frequency" ; + local:feature "Spectral Slope" ; + local:output "Dense" ; + local:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" . + +Vamp:SpectralSmoothness a rdfs:Resource ; + dc:description "Extract the spectral smoothness of an audio spectrum" ; + local:domain "frequency" ; + local:feature "Spectral Smoothness" ; + local:output "Dense" ; + local:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" . + +Vamp:SpectralSpread a rdfs:Resource ; + dc:description "Extract the spectral spread of an audio spectrum" ; + local:domain "frequency" ; + local:feature "Spectral Spread" ; + local:output "Dense" ; + local:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" . + +Vamp:SpectralStandardDeviation a rdfs:Resource ; + dc:description "Extract the standard deviation of an audio spectrum" ; + local:domain "frequency" ; + local:feature "Spectral Standard Deviation" ; + local:output "Dense" ; + local:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" . + +Vamp:SpectralVariance a rdfs:Resource ; + dc:description "Extract the variance of an audio spectrum" ; + local:domain "frequency" ; + local:feature "Spectral Variance" ; + local:output "Dense" ; + local:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" . + +Vamp:Spectrum a rdfs:Resource ; + dc:description "Extract the spectrum of an audio signal" ; + local:domain "time" ; + local:feature "Spectrum" ; + local:output "Dense" ; + local:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" . + +Vamp:StandardDeviation a rdfs:Resource ; + dc:description "Extract the standard deviation of a range of values" ; + local:domain "frequency" ; + local:feature "Standard Deviation" ; + local:output "Dense" ; + local:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" . + +Vamp:SumofValues a rdfs:Resource ; + dc:description "Extract the sum of the values in a given range" ; + local:domain "frequency" ; + local:feature "Sum of Values" ; + local:output "Dense" ; + local:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" . + +Vamp:Tempo a rdfs:Resource ; + local:domain "frequency", + "time" ; + local:feature "Tempo (Aubio Beat Tracker)", + "Tempo (Tempo and Beat Tracker)" ; + local:output "Dense", + "Sparse" ; + local:source "Paul Brossier (method by Matthew Davies, plugin by Chris Cannam)", + "Queen Mary, University of London" . + +Vamp:TempoandBeatTracker a rdfs:Resource ; + dc:description "Estimate beat locations and tempo" ; + local:domain "frequency" ; + local:feature "Tempo and Beat Tracker" ; + local:source "Queen Mary, University of London" . + +Vamp:TonalChange a rdfs:Resource ; + dc:description "Detect and return the positions of harmonic changes such as chord boundaries" ; + local:domain "time" ; + local:feature "Tonal Change" ; + local:source "Queen Mary, University of London" . + +Vamp:TonalChangeDetectionFunction a rdfs:Resource ; + local:domain "time" ; + local:feature "Tonal Change Detection Function (Tonal Change)" ; + local:output "Sparse" ; + local:source "Queen Mary, University of London" . + +Vamp:TonalChangePositions a rdfs:Resource ; + local:domain "time" ; + local:feature "Tonal Change Positions (Tonal Change)" ; + local:output "Sparse" ; + local:source "Queen Mary, University of London" . + +Vamp:Tonality a rdfs:Resource ; + dc:description "Extract the tonality an audio spectrum" ; + local:domain "frequency" ; + local:feature "Tonality" ; + local:output "Dense" ; + local:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" . + +Vamp:TonicPitch a rdfs:Resource ; + local:domain "time" ; + local:feature "Tonic Pitch (Key Detector)" ; + local:output "Sparse" ; + local:source "Queen Mary, University of London" . + +Vamp:Transformto6DTonalContentSpace a rdfs:Resource ; + local:domain "time" ; + local:feature "Transform to 6D Tonal Content Space (Tonal Change)" ; + local:output "Dense" ; + local:source "Queen Mary, University of London" . + +Vamp:TristimulusI a rdfs:Resource ; + dc:description "Extract the tristimulus (type I) of an audio spectrum" ; + local:domain "frequency" ; + local:feature "Tristimulus I" ; + local:output "Dense" ; + local:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" . + +Vamp:TristimulusII a rdfs:Resource ; + dc:description "Extract the tristimulus (type II) of an audio spectrum" ; + local:domain "frequency" ; + local:feature "Tristimulus II" ; + local:output "Dense" ; + local:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" . + +Vamp:TristimulusIII a rdfs:Resource ; + dc:description "Extract the tristimulus (type III) of an audio spectrum" ; + local:domain "frequency" ; + local:feature "Tristimulus III" ; + local:output "Dense" ; + local:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" . + +Vamp:TunedLog-FrequencySpectrum a rdfs:Resource ; + local:domain "frequency" ; + local:feature "Tuned Log-Frequency Spectrum (NNLS Chroma)" ; + local:output "Dense" ; + local:source "Matthias Mauch" . + +Vamp:Tuning a rdfs:Resource ; + dc:description "The tuning plugin can estimate the local and global tuning of piece. The same tuning method is used for the NNLS Chroma and Chordino plugins." ; + local:domain "frequency" ; + local:feature "Tuning" ; + local:source "Matthias Mauch" . + +Vamp:Variance a rdfs:Resource ; + dc:description "Extract the variance of a range of values" ; + local:domain "frequency" ; + local:feature "Variance" ; + local:output "Dense" ; + local:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" . + +Vamp:ZeroCrossingRate a rdfs:Resource ; + dc:description "Extract the zero crossing rate of an audio signal" ; + local:domain "time" ; + local:feature "Zero Crossing Rate" ; + local:output "Dense" ; + local:source "libxtract by Jamie Bullock (plugin by Chris Cannam)" . + +Vamp:ZeroCrossings a rdfs:Resource ; + dc:description "Detect and count zero crossing points", + "Marsyas - Batch Feature Extract - Zero Crossings" ; + local:domain "time" ; + local:feature "Marsyas - Batch Feature Extract - Zero Crossings", + "Zero Crossings" ; + local:output "Dense" ; + local:source "Marsyas Plugins" . +
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/rdfn3/af-Yaafe.n3 Mon Feb 25 14:40:54 2013 +0000 @@ -0,0 +1,106 @@ +@prefix Yaafe: <file:///Users/alo/MusicOntology/features/rdf/> . +@prefix dc: <http://purl.org/dc/elements/1.1/> . +@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . + +Yaafe:AmplitudeModulation a rdfs:Resource ; + dc:description "Tremelo and Grain description, according to [SE2005]_ and [AE2001]_." . + +Yaafe:AutoCorrelation a rdfs:Resource ; + dc:description "Compute autocorrelation coefficients *ac* on each frames." . + +Yaafe:AutoCorrelationPeaksIntegrator a rdfs:Resource ; + dc:description "Feature transform that compute peaks of the autocorrelation function, outputs peaks and amplitude." . + +Yaafe:Cepstrum a rdfs:Resource ; + dc:description "Feature transform that compute cepstrum coefficients of input feature frames. (use DCT II)" . + +Yaafe:ComplexDomainOnsetDetection a rdfs:Resource ; + dc:description "Compute onset detection using a complex domain spectral flux method [CD2003]_." . + +Yaafe:Derivate a rdfs:Resource ; + dc:description "Compute temporal derivative of input feature. The derivative is approximated by" . + +Yaafe:Energy a rdfs:Resource ; + dc:description "Compute energy as root mean square of an audio Frame." . + +Yaafe:Envelope a rdfs:Resource ; + dc:description "Extract amplitude envelope using hilbert transform, low-pass filtering and decimation." . + +Yaafe:EnvelopeShapeStatistics a rdfs:Resource ; + dc:description "Centroid, spread, skewness and kurtosis of each frame's amplitude envelope. For more details about moments, see :ref:Shape Statistics shapestatistics." . + +Yaafe:Frames a rdfs:Resource ; + dc:description "Segment input signal into frames." . + +Yaafe:HistogramIntegrator a rdfs:Resource ; + dc:description "Feature transform that compute histogram of input values" . + +Yaafe:LPC a rdfs:Resource ; + dc:description "Compute the Linear Predictor Coefficients (LPC) of a signal frame. It uses autocorrelation and Levinson-Durbin algorithm. see [JM1975]_." . + +Yaafe:LSF a rdfs:Resource ; + dc:description "Compute the Line Spectral Frequency (LSF) coefficients of a signal frame. Algorithm was adapted from ([TB2006]_, [SH1976]_)." . + +Yaafe:Loudness a rdfs:Resource ; + dc:description "The loudness coefficients are the energy in each Bark band, normalized by the overall sum. see [GP2004]_ and [MG1997]_ for more details." . + +Yaafe:MFCC a rdfs:Resource ; + dc:description "Compute the Mel-frequencies cepstrum coefficients [DM1980]_." . + +Yaafe:MagnitudeSpectrum a rdfs:Resource ; + dc:description "Compute frame's magnitude spectrum, using an analysis window (Hanning or Hamming), or not." . + +Yaafe:MelSpectrum a rdfs:Resource ; + dc:description "Compute the Mel-frequencies spectrum [DM1980]_." . + +Yaafe:OBSI a rdfs:Resource ; + dc:description "Compute Octave band signal intensity using a trigular octave filter bank ([SE2005]_)." . + +Yaafe:OBSIR a rdfs:Resource ; + dc:description "Compute log of :class:OBSI ratio between consecutive octave." . + +Yaafe:PerceptualSharpness a rdfs:Resource ; + dc:description "Compute the sharpness of :class:Loudness coefficients, according to [GP2004]_." . + +Yaafe:PerceptualSpread a rdfs:Resource ; + dc:description "Compute the spread of :class:Loudness coefficients, according to [GP2004]_." . + +Yaafe:SlopeIntegrator a rdfs:Resource ; + dc:description "Feature transform that compute the slope of input feature over the given number of frames." . + +Yaafe:SpectralCrestFactorPerBand a rdfs:Resource ; + dc:description "Compute spectral crest factor per log-spaced band of 1/4 octave." . + +Yaafe:SpectralDecrease a rdfs:Resource ; + dc:description "Compute spectral decrease accoding to [GP2004]_." . + +Yaafe:SpectralFlatness a rdfs:Resource ; + dc:description "Compute global spectral flatness using the ratio between geometric and arithmetic mean." . + +Yaafe:SpectralFlatnessPerBand a rdfs:Resource ; + dc:description "Compute spectral flatness per log-spaced band of 1/4 octave, as proposed in MPEG7 standard." . + +Yaafe:SpectralFlux a rdfs:Resource ; + dc:description "Compute flux of :class:spectrum MagnitudeSpectrum between consecutives frames." . + +Yaafe:SpectralRolloff a rdfs:Resource ; + dc:description "Spectral roll-off is the frequency so that 99% of the energy is contained below. see [SS1997]_." . + +Yaafe:SpectralShapeStatistics a rdfs:Resource ; + dc:description "Compute shape statistics of :class:MagnitudeSpectrum, (see [GR2004]_)." . + +Yaafe:SpectralSlope a rdfs:Resource ; + dc:description "SpectralSlope is computed by linear regression of the spectral amplitude. (see [GP2004]_)" . + +Yaafe:SpectralVariation a rdfs:Resource ; + dc:description "SpectralVariation is the normalized correlation of :class:spectrum MagnitudeSpectrum between consecutive frames. (see [GP2004]_)" . + +Yaafe:StatisticalIntegrator a rdfs:Resource ; + dc:description "Feature transform that compute the temporal mean and variance of input feature over the given number of frames." . + +Yaafe:TemporalShapeStatistics a rdfs:Resource ; + dc:description "Compute :ref:shape statistics shapestatistics of signal frames." . + +Yaafe:ZCR a rdfs:Resource ; + dc:description "Compute zero-crossing rate in frames. see [SS1997]_." . +
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/rdfn3/af-aubio.n3 Mon Feb 25 14:40:54 2013 +0000 @@ -0,0 +1,94 @@ +@prefix aubio: <file:///Users/alo/MusicOntology/features/rdf/> . +@prefix dc: <http://purl.org/dc/elements/1.1/> . +@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . + +aubio:BeatTracking a rdfs:Resource ; + dc:description "Beat tracking using a context dependant model." . + +aubio:ComplexDomainMethodOnsetDetectionFunction a rdfs:Resource ; + dc:description "Complex Domain Method onset detection function." . + +aubio:EnergyBasedOnsetDetectionFunction a rdfs:Resource ; + dc:description "This function calculates the local energy of the input spectral frame." . + +aubio:FilterbankMel a rdfs:Resource ; + dc:description "Mel frequency filter bank coefficients. Set filter bank coefficients to Mel frequency bands" . + +aubio:HighFrequencyContentOnsetDetectionFunction a rdfs:Resource ; + dc:description "This method computes the High Frequency Content (HFC) of the input spectral frame. The resulting function is efficient at detecting percussive onsets" . + +aubio:KullbackLieblerOnsetDetectionFunction a rdfs:Resource ; + dc:description "Kullback-Liebler onset detection function." . + +aubio:MFCC a rdfs:Resource ; + dc:description "Mel-frequency cepstrum coefficients object" . + +aubio:ModifiedKullbackLieblerOnsetDetectionFunction a rdfs:Resource ; + dc:description "Modified Kullback-Liebler onset detection function." . + +aubio:Onset a rdfs:Resource ; + dc:description "Computes the onset detection function and detect peaks in these functions. When onsets are found above a given silence threshold, and after a minimum inter-onset interval, the output vector returned by aubio_onset_do is filled with 1. Otherwise, the output vector remains 0" . + +aubio:OnsetDetectionFunction a rdfs:Resource ; + dc:description "These functions are designed to raise at notes attacks in music signals." . + +aubio:PeakPicker a rdfs:Resource ; + dc:description "Peak picking utilities function" . + +aubio:PhaseBasedMethodOnsetDetectionFunction a rdfs:Resource ; + dc:description "Phase Based Method onset detection function." . + +aubio:Pitch a rdfs:Resource ; + dc:description "Generic method for pitch detection" . + +aubio:PitchFastComb a rdfs:Resource ; + dc:description "Pitch detection using a fast harmonic comb filter" . + +aubio:PitchFftYin a rdfs:Resource ; + dc:description "Pitch detection using a spectral implementation of the YIN algorithm" . + +aubio:PitchMultiComb a rdfs:Resource ; + dc:description "Pitch detection using multiple-comb filter" . + +aubio:PitchSchmitt a rdfs:Resource ; + dc:description "Pitch detection using a Schmitt trigger" . + +aubio:PitchYin a rdfs:Resource ; + dc:description "Pitch detection using the YIN algorithm" . + +aubio:SpectralCentroid a rdfs:Resource ; + dc:description "The spectral centroid represents the barycenter of the spectrum." . + +aubio:SpectralDecrease a rdfs:Resource ; + dc:description "The spectral decrease is another representation of the decreasing rate, based on perceptual criteria." . + +aubio:SpectralDifferenceMethodOnsetDetectionFunction a rdfs:Resource ; + dc:description "Spectral difference method onset detection function." . + +aubio:SpectralFlux a rdfs:Resource ; + dc:description "Spectral Flux" . + +aubio:SpectralKurtosis a rdfs:Resource ; + dc:description "The kurtosis is a measure of the flatness of the spectrum, computed from the fourth order moment." . + +aubio:SpectralRolloff a rdfs:Resource ; + dc:description "This function returns the bin number below which 95% of the spectrum energy is found." . + +aubio:SpectralShapeDescriptors a rdfs:Resource ; + dc:description "Spectral shape descriptors" . + +aubio:SpectralSkewness a rdfs:Resource ; + dc:description "The skewness is computed from the third order moment of the spectrum. A negative skewness indicates more energy on the lower part of the spectrum. A positive skewness indicates more energy on the high frequency of the spectrum." . + +aubio:SpectralSlope a rdfs:Resource ; + dc:description "The spectral slope represents decreasing rate of the spectral amplitude, computed using a linear regression." . + +aubio:SpectralSpread a rdfs:Resource ; + dc:description "The spectral spread is the variance of the spectral distribution around its centroid." . + +aubio:Tempo a rdfs:Resource ; + dc:description "Tempo detection driver. This object stores all the memory required for tempo detection algorithm and returns the estimated beat locations." . + +aubio:TransientSteadyStateSeparation a rdfs:Resource ; + dc:description "Transient / Steady-state Separation (TSS)" . +
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/rdfn3/af-comirva.n3 Mon Feb 25 14:40:54 2013 +0000 @@ -0,0 +1,15 @@ +@prefix comirva: <file:///Users/alo/MusicOntology/features/rdf/> . +@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . + +comirva:FluctuationPattern a rdfs:Resource . + +comirva:FluctuationPatternCent a rdfs:Resource . + +comirva:MFCC a rdfs:Resource . + +comirva:MandelEllis a rdfs:Resource . + +comirva:SpectralPatternCent a rdfs:Resource . + +comirva:TimbreDistribution a rdfs:Resource . +
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/rdfn3/af-jMIR.n3 Mon Feb 25 14:40:54 2013 +0000 @@ -0,0 +1,153 @@ +@prefix dc: <http://purl.org/dc/elements/1.1/> . +@prefix jMIR: <file:///Users/alo/MusicOntology/features/rdf/> . +@prefix local: <http://sovarr.c4dm.eecs.qmul.ac.uk/features/> . +@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . + +jMIR:AreaMoments a rdfs:Resource ; + dc:description "2D statistical method of moments" ; + local:name "Area Method of Moments" . + +jMIR:AreaMomentsConstantQMFCC a rdfs:Resource ; + dc:description "2D statistical method of moments of ConstantQ-based MFCCs" ; + local:name "Area Method of Moments of ConstantQ-based MFCCs" . + +jMIR:AreaMomentsLogConstantQ a rdfs:Resource ; + dc:description "2D statistical method of moments of the log of the ConstantQ transform" ; + local:name "Area Method of Moments of Log of ConstantQ transform" . + +jMIR:AreaMomentsMFCC a rdfs:Resource ; + dc:description "2D statistical method of moments of MFCCs" ; + local:name "Area Method of Moments of MFCCs" . + +jMIR:AreaPolynomialApproximation a rdfs:Resource ; + dc:description "coeffecients of 2D polynomial best describing the input matrtix." ; + local:name "2D Polynomial Approximation" . + +jMIR:AreaPolynomialApproximationConstantQMFCC a rdfs:Resource ; + dc:description "coeffecients of 2D polynomial best describing the input matrtix." ; + local:name "2D Polynomial Approximation ConstantQ MFCC" . + +jMIR:AreaPolynomialApproximationLogConstantQ a rdfs:Resource ; + dc:description "coeffecients of 2D polynomial best describing the input matrix." ; + local:name "2D Polynomial Approximation of Log of ConstantQ" . + +jMIR:BeatHistogram a rdfs:Resource ; + dc:description "A histogram showing the relative strength of different rhythmic periodicities (tempi) in a signal. Found by calculating the auto-correlation of the RMS." ; + local:name "Beat Histogram" . + +jMIR:BeatHistogramLabels a rdfs:Resource ; + dc:description "The bin label, in beats per minute, of each beat histogram bin. Not useful as a feature in itself, but useful for calculating other features from the beat histogram." ; + local:name "Beat Histogram Bin Labels" . + +jMIR:BeatSum a rdfs:Resource ; + dc:description "The sum of all entries in the beat histogram. This is a good measure of the importance of regular beats in a signal." ; + local:name "Beat Sum" . + +jMIR:Compactness a rdfs:Resource ; + dc:description "A measure of the noisiness of a signal. Found by comparing the components of a window's magnitude spectrum with the magnitude spectrum of its neighbouring windows." ; + local:name "Compactness" . + +jMIR:ConstantQ a rdfs:Resource ; + dc:description "signal to frequency transform using exponential-spaced frequency bins." ; + local:name "ConstantQ" . + +jMIR:ConstantQMFCC a rdfs:Resource ; + dc:description "MFCCs directly caluclated from ConstantQ exponential bins" ; + local:name "ConstantQ derived MFCCs" . + +jMIR:FFTBinFrequencies a rdfs:Resource ; + dc:description "The bin label, in Hz, of each power spectrum or magnitude spectrum bin. Not useful as a feature in itself, but useful for calculating other features from the magnitude spectrum and power spectrum." ; + local:name "FFT Bin Frequency Labels" . + +jMIR:FractionOfLowEnergyWindows a rdfs:Resource ; + dc:description "The fraction of the last 100 windows that has an RMS less than the mean RMS in the last 100 windows. This can indicate how much of a signal is quiet relative to the rest of the signal." ; + local:name "Fraction Of Low Energy Windows" . + +jMIR:HarmonicSpectralCentroid a rdfs:Resource ; + dc:description "Spectral Centroid calculated based on the center of mass of partials instead of center of mass of bins." ; + local:name "Partial Based Spectral Centroid" . + +jMIR:HarmonicSpectralFlux a rdfs:Resource ; + dc:description "Cacluate the correlation bettween adjacent frames based peaks instead of spectral bins. Peak tracking is primitive - whe the number of bins changes, the bottom bins are matched sequentially and the extra unmatched bins are ignored.) definition = new FeatureDefinition(name, description, true, 1) dependencies = new String[] { Peak Detection, Peak Detection } offsets = new int[] { 0, -1 } } /** * Extract the peak based spectral flux from the window. * @param samples * The samples to extract the feature from. * @param sampling_rate * The sampling rate that the samples are encoded with. * @param other_feature_values * The values of other features that are needed to calculate this * value. The order and offsets of these features must be the * same as those returned by this class's getDependencies and * getDependencyOffsets methods respectively. The first indice * indicates the feature/window and the second indicates the * value. * @return The extracted feature value(s). * @throws Exception * Throws an informative exception if the feature cannot be * calculated. * @see jAudioFeatureExtractor.AudioFeatures.FeatureExtractor#extractFeature(double[], * double, double[][]) */ public double[] extractFeature(double[] samples, double sampling_rate, double[][] other_feature_values) { double[] result = new double[1] double[] old = other_feature_values[1] double[] now = other_feature_values[0] double x, y, xy, x2, y2 x = y = xy = x2 = y2 = 0.0 int peakCount = Math.min(old.length, now.length) for (int i = 0 i < peakCount i) { x = old[i] y = now[i] xy = old[i] * now[i] x2 = old[i] * old[i] y2 = now[i] * now[i] } double top = xy - (x * y) / peakCount double bottom = Math.sqrt(Math.abs((x2 - ((x * x) / peakCount)) * (y2 - ((y * y) / peakCount)))) result[0] = top / bottom return result } /** * Proviede a complete copy of this feature. Used to implement the prottype * pattern */ public Object clone() { return new HarmonicSpectralFlux() } }" ; + local:name "Partial Based Spectral Flux" . + +jMIR:HarmonicSpectralSmoothness a rdfs:Resource ; + dc:description "Peak Based Spectral Smoothness is calculated from partials, not frequency bins. It is implemented accortding to McAdams 99 System.getProperty(line.separator) System.getProperty(line.separator) McAdams, S. 1999." ; + local:name "Peak Based Spectral Smoothness" . + +jMIR:LPC a rdfs:Resource ; + dc:description "Linear Prediction Coeffecients calculated using autocorrelation and Levinson-Durbin recursion." ; + local:name "LPC" . + +jMIR:LogConstantQ a rdfs:Resource ; + dc:description "logarithm of each bin of exponentially-spaced frequency bins." ; + local:name "Log of ConstantQ" . + +jMIR:MFCC a rdfs:Resource ; + dc:description "MFCC calculations based upon Orange Cow code" ; + local:name "MFCC" . + +jMIR:MagnitudeSpectrum a rdfs:Resource ; + dc:description "A measure of the strength of different frequency components." ; + local:name "Magnitude Spectrum" . + +jMIR:Moments a rdfs:Resource ; + dc:description "Statistical Method of Moments of the Magnitude Spectrum." ; + local:name "Method of Moments" . + +jMIR:PeakFinder a rdfs:Resource ; + dc:description "All peaks that are within an order of magnitude of the highest point" ; + local:name "Peak Detection" . + +jMIR:PowerSpectrum a rdfs:Resource ; + dc:description "A measure of the power of different frequency components." ; + local:name "Power Spectrum" . + +jMIR:RMS a rdfs:Resource ; + dc:description "A measure of the power of a signal." ; + local:name "Root Mean Square" . + +jMIR:RelativeDifferenceFunction a rdfs:Resource ; + dc:description "Relative Difference Function" ; + local:name "Relative Difference Function" . + +jMIR:SpectralCentroid a rdfs:Resource ; + dc:description "The centre of mass of the power spectrum." ; + local:name "Spectral Centroid" . + +jMIR:SpectralFlux a rdfs:Resource ; + dc:description "A measure of the amount of spectral change in a signal. //\\n Found by calculating the change in the magnitude spectrum //\\n from frame to frame." ; + local:name "Spectral Flux" . + +jMIR:SpectralRolloffPoint a rdfs:Resource ; + dc:description "The fraction of bins in the power spectrum at which 85% // System.getProperty(line.separator) of the power is at lower frequencies. This is a measure // System.getProperty(line.separator) // of the right-skewedness of the power spectrum." ; + local:name "Spectral Rolloff Point" . + +jMIR:SpectralVariability a rdfs:Resource ; + dc:description "The standard deviation of the magnitude spectrum. This is a measure of the variance of a signal's magnitude spectrum." ; + local:name "Spectral Variability" . + +jMIR:StrengthOfStrongestBeat a rdfs:Resource ; + dc:description "How strong the strongest beat in the beat histogram is compared to other potential beats." ; + local:name "Strength Of Strongest Beat" . + +jMIR:StrongestBeat a rdfs:Resource ; + dc:description "The strongest beat in a signal, in beats per minute, found by finding the strongest bin in the beat histogram." ; + local:name "Strongest Beat" . + +jMIR:StrongestFrequencyViaFFTMax a rdfs:Resource ; + dc:description "The strongest frequency component of a signal, in Hz, found via finding the FFT bin with the highest power." ; + local:name "Strongest Frequency Via FFT Maximum" . + +jMIR:StrongestFrequencyViaSpectralCentroid a rdfs:Resource ; + dc:description "The strongest frequency component of a signal, in Hz, found via the spectral centroid." ; + local:name "Strongest Frequency Via Spectral Centroid" . + +jMIR:StrongestFrequencyViaZeroCrossings a rdfs:Resource ; + dc:description "The strongest frequency component of a signal, in Hz, found via the number of zero-crossings." ; + local:name "Strongest Frequency Via Zero Crossings" . + +jMIR:ZeroCrossings a rdfs:Resource ; + dc:description "The number of times the waveform changed sign. An indication of frequency as well as noisiness." ; + local:name "Zero Crossings" . +
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/rdfn3/af-libXtract.n3 Mon Feb 25 14:40:54 2013 +0000 @@ -0,0 +1,121 @@ +@prefix libXtract: <file:///Users/alo/MusicOntology/features/rdf/> . +@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . + +libXtract:Amdf a rdfs:Resource . + +libXtract:Asdf a rdfs:Resource . + +<file:///Users/alo/MusicOntology/features/rdf/Attack time> a rdfs:Resource . + +libXtract:Autocorrelation a rdfs:Resource . + +<file:///Users/alo/MusicOntology/features/rdf/Autocorrelation fft> a rdfs:Resource . + +<file:///Users/alo/MusicOntology/features/rdf/Average deviation> a rdfs:Resource . + +<file:///Users/alo/MusicOntology/features/rdf/Bark coefficients> a rdfs:Resource . + +libXtract:Crest a rdfs:Resource . + +libXtract:Dct a rdfs:Resource . + +<file:///Users/alo/MusicOntology/features/rdf/Decay time> a rdfs:Resource . + +<file:///Users/alo/MusicOntology/features/rdf/Difference vector> a rdfs:Resource . + +libXtract:F0 a rdfs:Resource . + +<file:///Users/alo/MusicOntology/features/rdf/Failsafe f0> a rdfs:Resource . + +libXtract:Flatness a rdfs:Resource . + +<file:///Users/alo/MusicOntology/features/rdf/Flatness db> a rdfs:Resource . + +libXtract:Flux a rdfs:Resource . + +<file:///Users/alo/MusicOntology/features/rdf/Harmonic spectrum> a rdfs:Resource . + +<file:///Users/alo/MusicOntology/features/rdf/Highest value> a rdfs:Resource . + +libXtract:Hps a rdfs:Resource . + +<file:///Users/alo/MusicOntology/features/rdf/Irregularity j> a rdfs:Resource . + +<file:///Users/alo/MusicOntology/features/rdf/Irregularity k> a rdfs:Resource . + +libXtract:Kurtosis a rdfs:Resource . + +libXtract:Lnorm a rdfs:Resource . + +libXtract:Loudness a rdfs:Resource . + +<file:///Users/alo/MusicOntology/features/rdf/Lowest value> a rdfs:Resource . + +libXtract:Lpc a rdfs:Resource . + +libXtract:Lpcc a rdfs:Resource . + +libXtract:Mean a rdfs:Resource . + +libXtract:Mfcc a rdfs:Resource . + +libXtract:Noisiness a rdfs:Resource . + +<file:///Users/alo/MusicOntology/features/rdf/Nonzero count> a rdfs:Resource . + +<file:///Users/alo/MusicOntology/features/rdf/Odd even ratio> a rdfs:Resource . + +<file:///Users/alo/MusicOntology/features/rdf/Peak spectrum> a rdfs:Resource . + +libXtract:Power a rdfs:Resource . + +<file:///Users/alo/MusicOntology/features/rdf/Rms amplitude> a rdfs:Resource . + +libXtract:Rolloff a rdfs:Resource . + +libXtract:Sharpness a rdfs:Resource . + +libXtract:Skewness a rdfs:Resource . + +libXtract:Smoothness a rdfs:Resource . + +<file:///Users/alo/MusicOntology/features/rdf/Spectral average deviation> a rdfs:Resource . + +<file:///Users/alo/MusicOntology/features/rdf/Spectral centroid> a rdfs:Resource . + +<file:///Users/alo/MusicOntology/features/rdf/Spectral inharmonicity> a rdfs:Resource . + +<file:///Users/alo/MusicOntology/features/rdf/Spectral kurtosis> a rdfs:Resource . + +<file:///Users/alo/MusicOntology/features/rdf/Spectral mean> a rdfs:Resource . + +<file:///Users/alo/MusicOntology/features/rdf/Spectral skewness> a rdfs:Resource . + +<file:///Users/alo/MusicOntology/features/rdf/Spectral slope> a rdfs:Resource . + +<file:///Users/alo/MusicOntology/features/rdf/Spectral standard deviation> a rdfs:Resource . + +<file:///Users/alo/MusicOntology/features/rdf/Spectral variance> a rdfs:Resource . + +libXtract:Spectrum a rdfs:Resource . + +libXtract:Spread a rdfs:Resource . + +<file:///Users/alo/MusicOntology/features/rdf/Standard deviation> a rdfs:Resource . + +libXtract:Subbands a rdfs:Resource . + +libXtract:Sum a rdfs:Resource . + +libXtract:Tonality a rdfs:Resource . + +<file:///Users/alo/MusicOntology/features/rdf/Tristimulus 1> a rdfs:Resource . + +<file:///Users/alo/MusicOntology/features/rdf/Tristimulus 2> a rdfs:Resource . + +<file:///Users/alo/MusicOntology/features/rdf/Tristimulus 3> a rdfs:Resource . + +libXtract:Variance a rdfs:Resource . + +libXtract:Zcr a rdfs:Resource . +
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/rdfn3/af-sMIRk.n3 Mon Feb 25 14:40:54 2013 +0000 @@ -0,0 +1,19 @@ +@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . +@prefix sMIRk: <file:///Users/alo/MusicOntology/features/rdf/> . + +sMIRk:AutoCorrelation a rdfs:Resource . + +sMIRk:CrossCorrelation a rdfs:Resource . + +sMIRk:LPC a rdfs:Resource . + +sMIRk:RMS a rdfs:Resource . + +sMIRk:SpectralCentroid a rdfs:Resource . + +sMIRk:SpectralFlux a rdfs:Resource . + +sMIRk:SpectralRolloff a rdfs:Resource . + +sMIRk:ZeroCrossing a rdfs:Resource . +
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/rdfn3/base.n3 Mon Feb 25 14:40:54 2013 +0000 @@ -0,0 +1,1076 @@ +@prefix local: <http://sovarr.c4dm.eecs.qmul.ac.uk/features/> . +@prefix owl: <http://www.w3.org/2002/07/owl#> . + +<http://sovarr.c4dm.eecs.qmul.ac.uk/features/4HzModulationEnergy> a owl:Class ; + local:appdomain "audio segmentation" ; + local:complexity "medium" ; + local:computation "Band-pass Filter (Bank)", + "Discrete Fourier Transform", + "Energy Spectral Density", + "Normalization", + "Regression", + "Root Mean Square", + "Windowing" ; + local:dimensions "1" ; + local:domain "modulation frequency" ; + local:feature "4HzModulationEnergy" ; + local:level "physical" ; + local:model "psychoacoustic" ; + local:temporalscale "interframe" . + +<http://sovarr.c4dm.eecs.qmul.ac.uk/features/4HzModulationHarmonicCoefficients> a owl:Class ; + local:appdomain "audio segmentation" ; + local:complexity "medium" ; + local:computation "Autocorrelation", + "Band-pass Filter (Bank)", + "Discrete Cosine Transform", + "Sum, Weighted Sum", + "Windowing" ; + local:dimensions "1" ; + local:domain "modulation frequency" ; + local:feature "4HzModulationHarmonicCoefficients" ; + local:level "physical" ; + local:temporalscale "interframe" . + +local:AdaptiveTimeFrequencyTransform a owl:Class ; + local:appdomain "music information retrieval" ; + local:complexity "medium" ; + local:computation "Adaptive Time Frequency Transform", + "Spectral binning" ; + local:dimensions "42" ; + local:domain "frequency" ; + local:feature "AdaptiveTimeFrequencyTransform" ; + local:level "physical" ; + local:temporalscale "global" . + +local:AmplitudeDescriptor a owl:Class ; + local:appdomain "environmental sound recognition" ; + local:complexity "low" ; + local:computation "Mean", + "Median", + "Spectral binning", + "Windowing" ; + local:dimensions "9" ; + local:domain "temporal" ; + local:feature "AmplitudeDescriptor" ; + local:level "physical" ; + local:temporalscale "intraframe" . + +local:AuditoryFilterBankTemporalEnvelopes a owl:Class ; + local:appdomain "music information retrieval" ; + local:complexity "medium" ; + local:computation "Band-pass Filter (Bank)", + "Energy Spectral Density", + "Root Mean Square", + "Windowing" ; + local:dimensions "62" ; + local:domain "modulation frequency" ; + local:feature "AuditoryFilterBankTemporalEnvelopes" ; + local:level "physical" ; + local:model "psychoacoustic" ; + local:temporalscale "intraframe" . + +local:AutocorrelationMFCCs a owl:Class ; + local:appdomain "speech recognition" ; + local:complexity "high" ; + local:computation "Autocorrelation", + "Discrete Cosine Transform", + "Discrete Fourier Transform", + "Logarithm", + "Low-pass Filter", + "Regression", + "Windowing" ; + local:dimensions "parameterized" ; + local:domain "cepstral" ; + local:feature "AutocorrelationMFCCs" ; + local:level "physical" ; + local:model "psychoacoustic" ; + local:temporalscale "intraframe" . + +local:BandPeriodicity a owl:Class ; + local:appdomain "audio segmentation" ; + local:complexity "medium" ; + local:computation "Autocorrelation", + "Band-pass Filter (Bank)", + "Root Mean Square", + "Sum, Weighted Sum", + "Windowing" ; + local:dimensions "4" ; + local:domain "modulation frequency" ; + local:feature "BandPeriodicity" ; + local:level "perceptual" ; + local:temporalscale "interframe" . + +local:Bandwidth a owl:Class ; + local:appdomain "several" ; + local:complexity "low" ; + local:computation "Discrete Fourier Transform", + "Logarithm", + "Median", + "Regression", + "Windowing" ; + local:dimensions "1" ; + local:domain "frequency" ; + local:feature "Bandwidth" ; + local:level "perceptual" ; + local:temporalscale "intraframe" . + +local:BarkscaleFrequencyCepstralCoefficients a owl:Class ; + local:appdomain "several" ; + local:complexity "high" ; + local:computation "Discrete Cosine Transform", + "Discrete Fourier Transform", + "Logarithm", + "Regression", + "Windowing" ; + local:dimensions "parameterized" ; + local:domain "cepstral" ; + local:feature "BarkscaleFrequencyCepstralCoefficients" ; + local:level "physical" ; + local:model "psychoacoustic" ; + local:temporalscale "intraframe" . + +local:BeatHistogram a owl:Class ; + local:appdomain "music information retrieval" ; + local:complexity "medium" ; + local:computation "Autocorrelation", + "Discrete Wavelet Transform", + "Low-pass Filter", + "Root Mean Square", + "Spectral binning", + "Windowing" ; + local:dimensions "6" ; + local:domain "modulation frequency" ; + local:feature "BeatHistogram" ; + local:level "perceptual" ; + local:temporalscale "interframe" . + +local:BeatSpectrum a owl:Class ; + local:appdomain "music information retrieval" ; + local:complexity "high" ; + local:computation "Autocorrelation", + "Cross-Correlation", + "Discrete Fourier Transform", + "Logarithm", + "Low-pass Filter", + "Windowing" ; + local:dimensions "parameterized" ; + local:domain "modulation frequency" ; + local:feature "BeatSpectrum" ; + local:level "perceptual" ; + local:temporalscale "interframe" . + +local:BeatTracker a owl:Class ; + local:appdomain "music information retrieval" ; + local:complexity "high" ; + local:computation "Band-pass Filter (Bank)", + "Comb Filter (Bank)", + "Derivation, Difference", + "Low-pass Filter", + "Root Mean Square", + "Windowing" ; + local:dimensions "1" ; + local:domain "modulation frequency" ; + local:feature "BeatTracker" ; + local:level "perceptual" ; + local:temporalscale "interframe" . + +local:ChromaCENSFeatures a owl:Class ; + local:appdomain "music information retrieval" ; + local:complexity "medium" ; + local:computation "Band-pass Filter Bank", + "Low-pass Filter", + "Normalization", + "Root Mean Square", + "Windowing" ; + local:dimensions "12" ; + local:domain "frequency" ; + local:feature "ChromaCENSFeatures" ; + local:level "perceptual" ; + local:temporalscale "intraframe" . + +local:Chromagram a owl:Class ; + local:appdomain "music information retrieval" ; + local:complexity "medium" ; + local:computation "Discrete Fourier Transform", + "Logarithm", + "Root Mean Square", + "Windowing" ; + local:dimensions "12" ; + local:domain "frequency" ; + local:feature "Chromagram" ; + local:level "perceptual" ; + local:temporalscale "intraframe" . + +local:CyclicBeatSpectrum a owl:Class ; + local:appdomain "music information retrieval" ; + local:complexity "high" ; + local:computation "Comb Filter (Bank)", + "Derivation, Difference", + "Discrete Fourier Transform", + "Low-pass Filter", + "Root Mean Square", + "Windowing" ; + local:dimensions "parameterized" ; + local:domain "modulation frequency" ; + local:feature "CyclicBeatSpectrum" ; + local:level "perceptual" ; + local:temporalscale "interframe" . + +local:DWPTbasedRhythmFeature a owl:Class ; + local:appdomain "music information retrieval" ; + local:complexity "medium" ; + local:computation "Autocorrelation", + "Discrete Wavelet Transform", + "Root Mean Square", + "Spectral binning", + "Windowing" ; + local:dimensions "parameterized" ; + local:domain "modulation frequency" ; + local:feature "DWPTbasedRhythmFeature" ; + local:level "perceptual" ; + local:temporalscale "interframe" . + +local:DaubechiesWaveletCoefficientHistogram a owl:Class ; + local:appdomain "music information retrieval" ; + local:complexity "medium" ; + local:computation "Discrete Wavelet Transform", + "Spectral binning", + "Windowing" ; + local:dimensions "28" ; + local:domain "frequency" ; + local:feature "DaubechiesWaveletCoefficientHistogram" ; + local:level "physical" ; + local:temporalscale "intraframe" . + +local:DistortionDiscriminantAnalysis a owl:Class ; + local:appdomain "fingerprinting" ; + local:complexity "high" ; + local:computation "Logarithm", + "Modulated Complex Lapped Transform", + "Principal Component Analysis", + "Windowing" ; + local:dimensions "64" ; + local:domain "eigendomain" ; + local:feature "DistortionDiscriminantAnalysis" ; + local:level "physical" ; + local:temporalscale "interframe" . + +local:HarmonicCoefficient a owl:Class ; + local:appdomain "audio segmentation" ; + local:complexity "low" ; + local:computation "Autocorrelation", + "Sum, Weighted Sum", + "Windowing" ; + local:dimensions "1" ; + local:domain "frequency" ; + local:feature "HarmonicCoefficient" ; + local:level "perceptual" ; + local:temporalscale "intraframe" . + +local:HarmonicConcentration a owl:Class ; + local:appdomain "music information retrieval" ; + local:complexity "medium" ; + local:computation "Discrete Fourier Transform", + "Energy Spectral Density", + "Root Mean Square", + "Windowing", + "Zero-/Level Crossing Detector" ; + local:dimensions "1" ; + local:domain "frequency" ; + local:feature "HarmonicConcentration" ; + local:level "perceptual" ; + local:temporalscale "intraframe" . + +local:HarmonicDerivate a owl:Class ; + local:appdomain "music information retrieval" ; + local:complexity "medium" ; + local:computation "Derivation, Difference", + "Discrete Fourier Transform", + "Logarithm", + "Windowing" ; + local:dimensions "parameterized" ; + local:domain "frequency" ; + local:feature "HarmonicDerivate" ; + local:level "perceptual" ; + local:temporalscale "intraframe" . + +local:HarmonicEnergyEntropy a owl:Class ; + local:appdomain "music information retrieval" ; + local:complexity "medium" ; + local:computation "Discrete Fourier Transform", + "Entropy", + "Windowing", + "Zero-/Level Crossing Detector" ; + local:dimensions "1" ; + local:domain "frequency" ; + local:feature "HarmonicEnergyEntropy" ; + local:level "perceptual" ; + local:temporalscale "intraframe" . + +local:HarmonicProminence a owl:Class ; + local:appdomain "environmental sound recognition" ; + local:complexity "medium" ; + local:computation "Autocorrelation", + "Windowing", + "Zero-/Level Crossing Detector" ; + local:dimensions "1" ; + local:domain "frequency" ; + local:feature "HarmonicProminence" ; + local:level "perceptual" ; + local:temporalscale "intraframe" . + +local:Inharmonicity a owl:Class ; + local:appdomain "music information retrieval" ; + local:complexity "medium" ; + local:computation "Autocorrelation", + "Median", + "Windowing", + "Zero-/Level Crossing Detector" ; + local:dimensions "1" ; + local:domain "frequency" ; + local:feature "Inharmonicity" ; + local:level "perceptual" ; + local:temporalscale "intraframe" . + +local:IntegralLoudness a owl:Class ; + local:appdomain "music information retrieval" ; + local:complexity "high" ; + local:computation "(Non-) Linear Weighting Function", + "Discrete Fourier Transform", + "Exponential Function", + "Logarithm", + "Root Mean Square", + "Windowing" ; + local:dimensions "1" ; + local:domain "frequency" ; + local:feature "IntegralLoudness" ; + local:level "perceptual" ; + local:model "psychoacoustic" ; + local:temporalscale "intraframe" . + +local:JointAcousticandModuluationFrequency a owl:Class ; + local:appdomain "several" ; + local:complexity "high" ; + local:computation "Discrete Fourier Transform", + "Discrete Wavelet Transform", + "Low-pass Filter", + "Regression", + "Root Mean Square", + "Windowing" ; + local:dimensions "parameterized" ; + local:domain "modulation frequency" ; + local:feature "JointAcousticandModuluationFrequency" ; + local:level "physical" ; + local:model "psychoacoustic" ; + local:temporalscale "interframe" . + +local:LineSpectralFrequencies a owl:Class ; + local:appdomain "several" ; + local:complexity "medium" ; + local:computation "Autoregression (Linear Prediction Analysis)", + "Percentile", + "Windowing" ; + local:dimensions "parameterized" ; + local:domain "frequency" ; + local:feature "LineSpectralFrequencies" ; + local:level "physical" ; + local:temporalscale "intraframe" . + +local:LinearPredictionCepstralCoefficients a owl:Class ; + local:abbreviation "LPCC" ; + local:appdomain "speech recognition" ; + local:complexity "medium" ; + local:computation "Autoregression (Linear Prediction Analysis)", + "Band-pass Filter (Bank)", + "Cepstral Recursion Formula", + "Windowing" ; + local:dimensions "parameterized" ; + local:domain "cepstral" ; + local:feature "LinearPredictionCepstralCoefficients" ; + local:level "physical" ; + local:temporalscale "intraframe" . + +local:LinearPredictionZCR a owl:Class ; + local:appdomain "speech recognition" ; + local:complexity "low" ; + local:computation "Autoregression (Linear Prediction Analysis)", + "Spectral binning", + "Windowing" ; + local:dimensions "1" ; + local:domain "temporal" ; + local:feature "LinearPredictionZCR" ; + local:level "physical" ; + local:temporalscale "intraframe" . + +local:LinearPredictiveCoding a owl:Class ; + local:abbreviation "LPC" ; + local:appdomain "speech recognition" ; + local:complexity "low" ; + local:computation "Autoregression (Linear Prediction Analysis)", + "Band-pass Filter (Bank)", + "Discrete Fourier Transform", + "Windowing" ; + local:dimensions "parameterized" ; + local:domain "frequency" ; + local:feature "LinearPredictiveCoding" ; + local:level "physical" ; + local:temporalscale "intraframe" . + +local:MPEG7AudioFundamentalFrequency a owl:Class ; + local:appdomain "several" ; + local:complexity "low" ; + local:computation "Autocorrelation", + "Sum, Weighted Sum", + "Windowing" ; + local:computedIn "MPEG-7" ; + local:dimensions "2" ; + local:domain "frequency" ; + local:feature "MPEG7AudioFundamentalFrequency" ; + local:level "perceptual" ; + local:temporalscale "intraframe" . + +local:MPEG7AudioHarmonicity a owl:Class ; + local:appdomain "several" ; + local:complexity "medium" ; + local:computation "Autocorrelation", + "Sum, Weighted Sum", + "Windowing" ; + local:computedIn "MPEG-7" ; + local:dimensions "2" ; + local:domain "frequency" ; + local:feature "MPEG7AudioHarmonicity" ; + local:level "perceptual" ; + local:temporalscale "intraframe" . + +local:MPEG7AudioSpectrumBasis a owl:Class ; + local:appdomain "environmental sound recognition" ; + local:complexity "high" ; + local:computation "Discrete Fourier Transform", + "Independent Component Analysis", + "Logarithm", + "Normalization", + "Regression", + "Singular Value Decomposition", + "Windowing" ; + local:computedIn "MPEG-7" ; + local:dimensions "parameterized" ; + local:domain "eigendomain" ; + local:feature "MPEG7AudioSpectrumBasis" ; + local:level "physical" ; + local:temporalscale "interframe" . + +local:MPEG7AudioSpectrumCentroid a owl:Class ; + local:appdomain "several" ; + local:complexity "medium" ; + local:computation "Discrete Fourier Transform", + "Logarithm", + "Mean", + "Regression", + "Windowing" ; + local:computedIn "MPEG-7" ; + local:dimensions "1" ; + local:domain "frequency" ; + local:feature "MPEG7AudioSpectrumCentroid" ; + local:level "perceptual" ; + local:model "psychoacoustic" ; + local:temporalscale "intraframe" . + +local:MPEG7AudioSpectrumSpread a owl:Class ; + local:appdomain "several" ; + local:complexity "medium" ; + local:computation "Discrete Fourier Transform", + "Logarithm", + "Median", + "Regression", + "Windowing" ; + local:computedIn "MPEG-7" ; + local:dimensions "1" ; + local:domain "frequency" ; + local:feature "MPEG7AudioSpectrumSpread" ; + local:level "perceptual" ; + local:model "psychoacoustic" ; + local:temporalscale "intraframe" . + +local:MPEG7AudioWaveform a owl:Class ; + local:complexity "low" ; + local:computation "Histogram", + "Sum, Weighted Sum", + "Windowing" ; + local:computedIn "MPEG-7" ; + local:dimensions "2" ; + local:domain "temporal" ; + local:feature "MPEG7AudioWaveform" ; + local:level "physical" ; + local:temporalscale "intraframe" . + +local:MPEG7HarmonicSpectralCentroid a owl:Class ; + local:appdomain "music information retrieval" ; + local:complexity "medium" ; + local:computation "Discrete Fourier Transform", + "Mean", + "Windowing", + "Zero-/Level Crossing Detector" ; + local:computedIn "MPEG-7" ; + local:dimensions "1" ; + local:domain "frequency" ; + local:feature "MPEG7HarmonicSpectralCentroid" ; + local:level "perceptual" ; + local:temporalscale "intraframe" . + +local:MPEG7HarmonicSpectralDeviation a owl:Class ; + local:appdomain "music information retrieval" ; + local:complexity "medium" ; + local:computation "Discrete Fourier Transform", + "Logarithm", + "Mean", + "Median", + "Windowing", + "Zero-/Level Crossing Detector" ; + local:computedIn "MPEG-7" ; + local:dimensions "1" ; + local:domain "frequency" ; + local:feature "MPEG7HarmonicSpectralDeviation" ; + local:level "perceptual" ; + local:temporalscale "intraframe" . + +local:MPEG7HarmonicSpectralSpread a owl:Class ; + local:appdomain "music information retrieval" ; + local:complexity "medium" ; + local:computation "Discrete Fourier Transform", + "Median", + "Windowing", + "Zero-/Level Crossing Detector" ; + local:computedIn "MPEG-7" ; + local:dimensions "1" ; + local:domain "frequency" ; + local:feature "MPEG7HarmonicSpectralSpread" ; + local:level "perceptual" ; + local:temporalscale "intraframe" . + +local:MPEG7HarmonicSpectralVariation a owl:Class ; + local:appdomain "music information retrieval" ; + local:complexity "medium" ; + local:computation "Cross-Correlation", + "Discrete Fourier Transform", + "Windowing", + "Zero-/Level Crossing Detector" ; + local:computedIn "MPEG-7" ; + local:dimensions "1" ; + local:domain "frequency" ; + local:feature "MPEG7HarmonicSpectralVariation" ; + local:level "perceptual" ; + local:temporalscale "intraframe" . + +local:MPEG7LogAttackTime a owl:Class ; + local:appdomain "music information retrieval" ; + local:complexity "low" ; + local:computation "Logarithm", + "Power", + "Root Mean Square", + "Windowing" ; + local:computedIn "MPEG-7" ; + local:dimensions "1" ; + local:domain "temporal" ; + local:feature "MPEG7LogAttackTime" ; + local:level "physical" ; + local:temporalscale "global" . + +local:MPEG7SpectralCentroid a owl:Class ; + local:appdomain "music information retrieval" ; + local:complexity "low" ; + local:computation "Discrete Fourier Transform", + "Mean" ; + local:computedIn "MPEG-7" ; + local:dimensions "1" ; + local:domain "frequency" ; + local:feature "MPEG7SpectralCentroid" ; + local:level "perceptual" ; + local:temporalscale "global" . + +local:MPEG7TemporalCentroid a owl:Class ; + local:appdomain "music information retrieval" ; + local:complexity "low" ; + local:computation "Mean", + "Power", + "Windowing" ; + local:computedIn "MPEG-7" ; + local:dimensions "1" ; + local:domain "temporal" ; + local:feature "MPEG7TemporalCentroid" ; + local:level "physical" ; + local:temporalscale "interframe" . + +local:MelscaleFrequencyCepstralCoefficients a owl:Class ; + local:abbreviation "MFCC" ; + local:appdomain "several" ; + local:complexity "high" ; + local:computation "Discrete Cosine Transform", + "Discrete Fourier Transform", + "Logarithm", + "Regression", + "Windowing" ; + local:dimensions "parameterized" ; + local:domain "cepstral" ; + local:feature "MelscaleFrequencyCepstralCoefficients" ; + local:level "physical" ; + local:model "psychoacoustic" ; + local:temporalscale "intraframe" . + +local:ModifiedGroupDelay a owl:Class ; + local:appdomain "speech recognition" ; + local:complexity "medium" ; + local:computation "Discrete Cosine Transform", + "Discrete Fourier Transform", + "Group Delay Function", + "Low-pass Filter", + "Windowing" ; + local:dimensions "parameterized" ; + local:domain "frequency" ; + local:feature "ModifiedGroupDelay" ; + local:level "physical" ; + local:temporalscale "intraframe" . + +local:MultiresolutionEntropy a owl:Class ; + local:appdomain "speech recognition" ; + local:complexity "medium" ; + local:computation "Discrete Fourier Transform", + "Entropy", + "Normalization", + "Regression", + "Windowing" ; + local:dimensions "parameterized" ; + local:domain "frequency" ; + local:feature "MultiresolutionEntropy" ; + local:level "perceptual" ; + local:temporalscale "intraframe" . + +local:NoiseRobustAuditoryFeature a owl:Class ; + local:appdomain "environmental sound recognition" ; + local:complexity "high" ; + local:computation "(Non-) Linear Weighting Function", + "Band-pass Filter Bank", + "Derivation, Difference", + "Discrete Cosine Transform", + "Logarithm", + "Low-pass Filter", + "Windowing" ; + local:dimensions "256" ; + local:domain "cepstral" ; + local:feature "NoiseRobustAuditoryFeature" ; + local:level "physical" ; + local:model "psychoacoustic" ; + local:temporalscale "intraframe" . + +local:PerceptualLinearPrediction a owl:Class ; + local:appdomain "speech recognition" ; + local:complexity "high" ; + local:computation "(Non-) Linear Weighting Function", + "Autoregression (Linear Prediction Analysis)", + "Cepstral Recursion Formula", + "Discrete Cosine Transform", + "Discrete Fourier Transform", + "Regression", + "Windowing" ; + local:dimensions "parameterized" ; + local:domain "cepstral" ; + local:feature "PerceptualLinearPrediction" ; + local:level "physical" ; + local:model "psychoacoustic" ; + local:temporalscale "intraframe" . + +local:PhaseSpaceFeatures a owl:Class ; + local:appdomain "speech recognition" ; + local:complexity "high" ; + local:computation "Phase Space Embedding", + "Windowing" ; + local:dimensions "parameterized" ; + local:domain "phase space" ; + local:feature "PhaseSpaceFeatures" ; + local:level "physical" ; + local:temporalscale "intraframe" . + +local:Pitch a owl:Class ; + local:appdomain "several" ; + local:complexity "low" ; + local:computation "Autocorrelation", + "Sum, Weighted Sum", + "Windowing" ; + local:dimensions "1" ; + local:domain "frequency" ; + local:feature "Pitch" ; + local:level "perceptual" ; + local:temporalscale "intraframe" . + +local:PitchHistogram a owl:Class ; + local:appdomain "music information retrieval" ; + local:complexity "medium" ; + local:computation "Autocorrelation", + "Root Mean Square", + "Spectral binning", + "Windowing" ; + local:dimensions "parameterized" ; + local:domain "frequency" ; + local:feature "PitchHistogram" ; + local:level "perceptual" ; + local:temporalscale "interframe" . + +local:PitchProfile a owl:Class ; + local:appdomain "music information retrieval" ; + local:complexity "high" ; + local:computation "Constant Q Transform", + "Root Mean Square", + "Spectral binning", + "Sum, Weighted Sum", + "Windowing" ; + local:dimensions "12" ; + local:domain "frequency" ; + local:feature "PitchProfile" ; + local:level "perceptual" ; + local:temporalscale "intraframe" . + +local:PitchSynchronousZCPA a owl:Class ; + local:appdomain "speech recognition" ; + local:complexity "medium" ; + local:computation "Autocorrelation", + "Band-pass Filter (Bank)", + "Logarithm", + "Root Mean Square", + "Spectral binning", + "Sum, Weighted Sum", + "Windowing" ; + local:dimensions "parameterized" ; + local:domain "temporal" ; + local:feature "PitchSynchronousZCPA" ; + local:level "physical" ; + local:model "psychoacoustic" ; + local:temporalscale "intraframe" . + +local:PsychoacousticalPitch a owl:Class ; + local:appdomain "several" ; + local:complexity "high" ; + local:computation "(Non-) Linear Weighting Function", + "Autocorrelation", + "Band-pass Filter (Bank)", + "Root Mean Square" ; + local:dimensions "parameterized" ; + local:domain "frequency" ; + local:feature "PsychoacousticalPitch" ; + local:level "perceptual" ; + local:model "psychoacoustic" ; + local:temporalscale "intraframe" . + +local:PulseMetric a owl:Class ; + local:appdomain "audio segmentation" ; + local:complexity "medium" ; + local:computation "Autocorrelation", + "Band-pass Filter (Bank)", + "Root Mean Square", + "Windowing" ; + local:dimensions "1" ; + local:domain "modulation frequency" ; + local:feature "PulseMetric" ; + local:level "perceptual" ; + local:temporalscale "intraframe" . + +local:RatescalefrequencyFeatures a owl:Class ; + local:appdomain "environmental sound recognition" ; + local:complexity "high" ; + local:computation "(Non-) Linear Weighting Function", + "Band-pass Filter Bank", + "Derivation, Difference", + "Discrete Wavelet Transform", + "Low-pass Filter", + "Principal Component Analysis", + "Root Mean Square", + "Windowing" ; + local:dimensions "256" ; + local:domain "eigendomain" ; + local:feature "RatescalefrequencyFeatures" ; + local:level "physical" ; + local:model "psychoacoustic" ; + local:temporalscale "interframe" . + +local:RelativeSpectralPLP a owl:Class ; + local:appdomain "speech recognition" ; + local:complexity "high" ; + local:computation "(Non-) Linear Weighting Function", + "Autoregression (Linear Prediction Analysis)", + "Band-pass Filter (Bank)", + "Cepstral Recursion Formula", + "Discrete Cosine Transform", + "Discrete Fourier Transform", + "Exponential Function", + "Logarithm", + "Regression", + "Windowing" ; + local:dimensions "parameterized" ; + local:domain "cepstral" ; + local:feature "RelativeSpectralPLP" ; + local:level "physical" ; + local:model "psychoacoustic" ; + local:temporalscale "intraframe" . + +local:RhythmPatterns a owl:Class ; + local:appdomain "music information retrieval" ; + local:complexity "high" ; + local:computation "(Non-) Linear Weighting Function", + "Discrete Fourier Transform", + "Harmonic Peak Detection", + "Logarithm", + "Low-pass Filter", + "Regression", + "Windowing" ; + local:dimensions "80" ; + local:domain "modulation frequency" ; + local:feature "RhythmPatterns" ; + local:level "physical" ; + local:model "psychoacoustic" ; + local:temporalscale "interframe" . + +local:Sharpness a owl:Class ; + local:appdomain "several" ; + local:complexity "medium" ; + local:computation "(Non-) Linear Weighting Function", + "Discrete Fourier Transform", + "Mean", + "Regression", + "Windowing" ; + local:dimensions "1" ; + local:domain "frequency" ; + local:feature "Sharpness" ; + local:level "perceptual" ; + local:model "psychoacoustic" ; + local:temporalscale "intraframe" . + +local:ShortTimeEnergy a owl:Class ; + local:appdomain "several" ; + local:complexity "low" ; + local:computation "Deviation, Sum of Differences", + "Windowing" ; + local:dimensions "1" ; + local:domain "temporal" ; + local:feature "ShortTimeEnergy" ; + local:level "physical" ; + local:temporalscale "intraframe" . + +local:Sone a owl:Class ; + local:appdomain "music information retrieval" ; + local:complexity "high" ; + local:computation "(Non-) Linear Weighting Function", + "Discrete Fourier Transform", + "Logarithm", + "Low-pass Filter", + "Regression", + "Windowing" ; + local:dimensions "parameterized" ; + local:domain "frequency" ; + local:feature "Sone" ; + local:level "perceptual" ; + local:model "psychoacoustic" ; + local:temporalscale "intraframe" . + +local:SpectralCenter a owl:Class ; + local:appdomain "music information retrieval" ; + local:complexity "low" ; + local:computation "Discrete Fourier Transform", + "Energy Spectral Density", + "Harmonic Peak Detection", + "Windowing" ; + local:dimensions "1" ; + local:domain "frequency" ; + local:feature "SpectralCenter" ; + local:level "perceptual" ; + local:temporalscale "intraframe" . + +local:SpectralCentroid a owl:Class ; + local:appdomain "several" ; + local:complexity "low" ; + local:computation "Discrete Fourier Transform", + "Logarithm", + "Mean", + "Regression", + "Windowing" ; + local:dimensions "1" ; + local:domain "frequency" ; + local:feature "SpectralCentroid" ; + local:level "perceptual" ; + local:temporalscale "intraframe" . + +local:SpectralCrest a owl:Class ; + local:appdomain "fingerprinting" ; + local:complexity "low" ; + local:computation "Discrete Fourier Transform", + "Logarithm", + "Mean", + "Regression", + "Sum, Weighted Sum", + "Windowing" ; + local:dimensions "parameterized" ; + local:domain "frequency" ; + local:feature "SpectralCrest" ; + local:level "perceptual" ; + local:temporalscale "intraframe" . + +local:SpectralDispersion a owl:Class ; + local:appdomain "music information retrieval" ; + local:complexity "low" ; + local:computation "Discrete Fourier Transform", + "Energy Spectral Density", + "Harmonic Peak Detection", + "Median", + "Windowing" ; + local:dimensions "1" ; + local:domain "frequency" ; + local:feature "SpectralDispersion" ; + local:level "perceptual" ; + local:temporalscale "intraframe" . + +local:SpectralFlatness a owl:Class ; + local:appdomain "fingerprinting" ; + local:complexity "medium" ; + local:computation "Discrete Fourier Transform", + "Logarithm", + "Mean", + "Regression", + "Windowing" ; + local:dimensions "parameterized" ; + local:domain "frequency" ; + local:feature "SpectralFlatness" ; + local:level "perceptual" ; + local:temporalscale "intraframe" . + +local:SpectralFlux a owl:Class ; + local:abbreviation "SF" ; + local:appdomain "several" ; + local:complexity "low" ; + local:computation "Derivation, Difference", + "Discrete Fourier Transform", + "Root Mean Square", + "Windowing" ; + local:dimensions "1" ; + local:domain "frequency" ; + local:feature "SpectralFlux" ; + local:level "physical" ; + local:temporalscale "intraframe" . + +local:SpectralPeakStructure a owl:Class ; + local:appdomain "music information retrieval" ; + local:complexity "medium" ; + local:computation "Derivation, Difference", + "Discrete Fourier Transform", + "Entropy", + "Spectral binning", + "Windowing", + "Zero-/Level Crossing Detector" ; + local:dimensions "1" ; + local:domain "frequency" ; + local:feature "SpectralPeakStructure" ; + local:level "perceptual" ; + local:temporalscale "intraframe" . + +local:SpectralPeaks a owl:Class ; + local:appdomain "music information retrieval" ; + local:complexity "low" ; + local:computation "Derivation, Difference", + "Discrete Fourier Transform", + "Sum, Weighted Sum", + "Windowing" ; + local:dimensions "parameterized" ; + local:domain "frequency" ; + local:feature "SpectralPeaks" ; + local:level "physical" ; + local:temporalscale "interframe" . + +local:SpectralRolloff a owl:Class ; + local:appdomain "several" ; + local:complexity "low" ; + local:computation "Discrete Fourier Transform", + "Polynomial Root Finding", + "Windowing" ; + local:dimensions "1" ; + local:domain "frequency" ; + local:feature "SpectralRolloff" ; + local:level "perceptual" ; + local:temporalscale "intraframe" . + +local:SpectralSlope a owl:Class ; + local:appdomain "several" ; + local:complexity "low" ; + local:computation "Discrete Fourier Transform", + "Peak Detection", + "Windowing" ; + local:dimensions "4" ; + local:domain "frequency" ; + local:feature "SpectralSlope" ; + local:level "physical" ; + local:temporalscale "intraframe" . + +local:SubbandEnergyRatio a owl:Class ; + local:appdomain "several" ; + local:complexity "low" ; + local:computation "Discrete Fourier Transform", + "Energy Spectral Density", + "Normalization", + "Regression", + "Windowing" ; + local:dimensions "parameterized" ; + local:domain "frequency" ; + local:feature "SubbandEnergyRatio" ; + local:level "physical" ; + local:temporalscale "intraframe" . + +local:SubbandSpectralFlux a owl:Class ; + local:appdomain "environmental sound recognition" ; + local:complexity "medium" ; + local:computation "Derivation, Difference", + "Discrete Fourier Transform", + "Logarithm", + "Mean", + "Normalization", + "Regression", + "Windowing" ; + local:dimensions "8" ; + local:domain "frequency" ; + local:feature "SubbandSpectralFlux" ; + local:level "perceptual" ; + local:temporalscale "intraframe" . + +local:Volume a owl:Class ; + local:appdomain "several" ; + local:complexity "low" ; + local:computation "Power", + "Windowing" ; + local:dimensions "1" ; + local:domain "temporal" ; + local:feature "Volume" ; + local:level "physical" ; + local:temporalscale "intraframe" . + +local:ZeroCrossingPeakAmplitudes a owl:Class ; + local:appdomain "speech recognition" ; + local:complexity "medium" ; + local:computation "Band-pass Filter (Bank)", + "Logarithm", + "Root Mean Square", + "Spectral binning", + "Windowing" ; + local:dimensions "parameterized" ; + local:domain "temporal" ; + local:feature "ZeroCrossingPeakAmplitudes" ; + local:level "physical" ; + local:model "psychoacoustic" ; + local:temporalscale "intraframe" . + +local:ZeroCrossingRate a owl:Class ; + local:abbreviation "ZCR" ; + local:appdomain "several" ; + local:complexity "low" ; + local:computation "Spectral binning", + "Windowing" ; + local:dimensions "1" ; + local:domain "temporal" ; + local:feature "ZeroCrossingRate" ; + local:level "physical" ; + local:temporalscale "intraframe" . +
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/rdfpy/convertXMLtoN3.py Mon Feb 25 14:40:54 2013 +0000 @@ -0,0 +1,16 @@ +import rdflib, os, fnmatch +from rdflib import Graph, RDF, RDFS, plugin, URIRef, Literal, OWL + +basedir = '/Users/alo/MusicOntology/features/' + +local = 'http://sovarr.c4dm.eecs.qmul.ac.uk/features/' + +for name in os.listdir(basedir+'rdf/'): + if fnmatch.fnmatch(name, '*.rdf'): + graph = Graph() + graph.parse(basedir+'rdf/'+name) + graph.bind(name[3:-4], URIRef('file://'+basedir+"rdf/")) + graph.bind('owl', 'http://www.w3.org/2002/07/owl#') + + graph.serialize(basedir+'rdfn3/'+name.split('.')[0]+'.n3', format='n3') + print "Serialized graph to " + basedir+'rdfn3/'+name.split('.')[0]+'.n3' \ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/rdfpy/writeAubioOnto.py Mon Feb 25 14:40:54 2013 +0000 @@ -0,0 +1,52 @@ +import rdflib +from rdflib import Graph, RDF, RDFS, plugin, URIRef, Literal, OWL + +basedir = '/Users/alo/MusicOntology/features/' + +local = 'http://sovarr.c4dm.eecs.qmul.ac.uk/features/' + +graph = Graph() +graph.bind('af', URIRef(local)) +graph.bind('dc', URIRef('http://purl.org/dc/elements/1.1/')) +graph.bind('owl', URIRef('http://www.w3.org/2002/07/owl#')) + +source = Graph() +source.parse(basedir+'rdfonto/af-aubio.n3', format='n3') + +categories = [] + +for su, ob in source.subject_objects(URIRef('file:///Users/alo/MusicOntology/features/rdf/type')): + if not ob in categories: + categories.append(ob) + +for category in categories: + graph.add(( + URIRef(local+category), + RDF.type, + OWL.Class + )) + +for su in source.subjects(RDF.type, RDFS.Resource): + idref = URIRef(local+su.split('/')[-1]) + graph.add(( + idref, + RDF.type, + OWL.Class + )) + + for ob in source.objects(su,URIRef('file:///Users/alo/MusicOntology/features/rdf/type')): + graph.add(( + idref, + RDFS.subClassOf, + URIRef(local+ob) + )) + + for ob in source.objects(su,URIRef('http://purl.org/dc/elements/1.1/description')): + graph.add(( + idref, + URIRef('http://purl.org/dc/elements/1.1/description'), + ob + )) + +graph.serialize(basedir + 'rdfonto/aubio-onto.rdf') +graph.serialize(basedir + 'rdfonto/aubio-onto.n3', format='n3') \ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/rdfpy/writeBaseOnto.py Mon Feb 25 14:40:54 2013 +0000 @@ -0,0 +1,609 @@ +import rdflib, os, fnmatch, urllib2 +from rdflib import Graph, RDF, RDFS, plugin, URIRef, Literal, OWL, XSD, Namespace +from xml.dom.minidom import parseString + +names = [line.strip() for line in open('pdfextract/names.txt')] +cat = [line.strip() for line in open('pdfextract/categories.txt')] +sig = [line.strip() for line in open('pdfextract/sig.txt')] + +basedir = '/Users/alo/MusicOntology/features/' + +local = 'http://sovarr.c4dm.eecs.qmul.ac.uk/features/' + +DC = Namespace(u"http://purl.org/dc/elements/1.1/") +VS = Namespace(u"http://www.w3.org/2003/06/sw-vocab-status/ns#") + +graph = Graph() +graph.bind('af', URIRef(local)) +graph.bind('dc', URIRef('http://purl.org/dc/elements/1.1/')) +graph.bind('owl', URIRef('http://www.w3.org/2002/07/owl#')) +graph.bind('xsd', URIRef('http://www.w3.org/2001/XMLSchema#')) +graph.bind('vs', URIRef('http://www.w3.org/2003/06/sw-vocab-status/ns#')) + +graph.add(( + URIRef(''), + RDF.type, + OWL.Ontology +)) + +graph.add(( + URIRef(''), + DC['title'], + Literal("Audio Features Base Ontology") +)) + +graph.add(( + URIRef(''), + OWL.versionInfo, + Literal("Version 0.1") +)) + +graph.add(( + URIRef(''), + DC['description'], + Literal("This is a base ontology for the Audio Features engineering process collected from literature") +)) + +graph.add(( + VS['term_status'], + RDF.type, + OWL.AnnotationProperty +)) + +i = 0 + +order = [ + "Zero Crossing Rate", + "Linear Predictive Coding", + "Mel-scale Frequency Cepstral Coefficients", + "Auditory Filter Bank Temporal Envelopes", + "Rate-scale-frequency Features", + "Phase Space Features" +] + +domains = { + "Zero Crossing Rate": 'temporal', + "Linear Predictive Coding": 'frequency', + "Mel-scale Frequency Cepstral Coefficients": 'cepstral', + "Auditory Filter Bank Temporal Envelopes": 'modulation frequency', + "Rate-scale-frequency Features": 'eigendomain', + "Phase Space Features": 'phase space' +} + +abbr = { + "Zero Crossing Rate": "ZCR", + "Mel-scale Frequency Cepstral Coefficients": "MFCC", + "Linear Predictive Coding": "LPC", + "Linear Prediction Cepstral Coefficients": "LPCC", + "Zero crossing peak amplitudes": "ZCPA", + "Line spectral frequencies": "LSF", + "Short-time energy": "STE", + "Amplitude descriptor": "AD", + "Adaptive time frequency transform": "ATFT", + "Daubechies Wavelet coefficient histogram": "DWCH", + "Spectral Flux": "SF", + "Group delay function": "GDF", + "Modified group delay function": "MGDF", + "Spectral centroid": "SC", + "Subband spectral flux": "SSF", + "Perceptual linear prediction": "PLP" +} + +appdom = { + 'ASR': "Speech Recognition", + 'ESR': "Environmental Sound Recognition", + 'MIR': "Music Information Retrieval", + 'AS': "Audio Segmentation", + 'FP': "Fingerprinting", + 'VAR': "Several", + 'EXC': "" +} + +domain = "" +domainIndex = 0 +compdict = {} + +graph.add(( + URIRef(local + 'MathematicalOperation'), + RDF.type, + OWL.Class +)) + +graph.add(( + URIRef(local + 'Filter'), + RDF.type, + OWL.Class +)) +graph.add(( + URIRef(local + 'Filter'), + RDFS.subClassOf, + URIRef(local + 'MathematicalOperation') +)) + +graph.add(( + URIRef(local + 'Transformation'), + RDF.type, + OWL.Class +)) +graph.add(( + URIRef(local + 'Transformation'), + RDFS.subClassOf, + URIRef(local + 'MathematicalOperation') +)) +graph.add(( + URIRef(local + 'Aggregation'), + RDF.type, + OWL.Class +)) +graph.add(( + URIRef(local + 'Aggregation'), + RDFS.subClassOf, + URIRef(local + 'MathematicalOperation') +)) + +for filename in ['filters', 'trans', 'aggr']: + compsuper = filename.replace('filters', 'Filter').replace('trans', 'Transformation').replace('aggr', 'Aggregation') + for line in [line.strip() for line in open(basedir + 'pdfextract/' + filename + '.txt')]: + compname = line[2:] + compidref = URIRef(local + compname.replace(' ', '').replace('(', '').replace(')', '').replace('-', '').replace(',', '')) + graph.add(( + compidref, + RDF.type, + OWL.Class + )) + graph.add(( + compidref, + RDFS.subClassOf, + URIRef(local + compsuper) + )) + graph.add(( + compidref, + RDFS.label, + Literal(compname) + )) + compdict[line[0]] = compidref + +graph.add(( + URIRef(local + 'Signal'), + RDF.type, + OWL.Class +)) + +graph.add(( + URIRef(local + 'Feature'), + RDF.type, + OWL.Class +)) + +graph.add(( + URIRef(local + 'Feature'), + OWL.subClassOf, + URIRef(local + 'Signal'), +)) + +for dom in domains.values(): + idref = URIRef(local + dom.capitalize().replace(' ', '') + 'Feature') + graph.add(( + idref, + RDF.type, + OWL.Class + )) + graph.add(( + idref, + RDFS.subClassOf, + URIRef(local + 'Feature') + )) + +graph.add(( + URIRef(local + 'PerceptualFeature'), + RDF.type, + OWL.Class +)) +graph.add(( + URIRef(local + 'PerceptualFeature'), + RDFS.subClassOf, + URIRef(local + 'Feature') +)) + +graph.add(( + URIRef(local + 'FrequencyDomainPerceptualFeature'), + RDF.type, + OWL.Class +)) +graph.add(( + URIRef(local + 'FrequencyDomainPerceptualFeature'), + RDFS.subClassOf, + URIRef(local + 'FrequencyFeature') +)) +graph.add(( + URIRef(local + 'FrequencyDomainPerceptualFeature'), + OWL.equivalentClass, + URIRef(local + 'PerceptualFeature') +)) + +graph.add(( + URIRef(local + 'FrequencyDomainPhysicalFeature'), + RDF.type, + OWL.Class +)) +graph.add(( + URIRef(local + 'FrequencyDomainPhysicalFeature'), + RDFS.subClassOf, + URIRef(local + 'FrequencyFeature') +)) +graph.add(( + URIRef(local + 'FrequencyDomainPhysicalFeature'), + OWL.equivalentClass, + URIRef(local + 'PhysicalFeature') +)) + + + +graph.add(( + URIRef(local + 'PhysicalFeature'), + RDF.type, + OWL.Class +)) +graph.add(( + URIRef(local + 'PhysicalFeature'), + RDFS.subClassOf, + URIRef(local + 'Feature') +)) + +graph.add(( + URIRef(local + 'ParametrizedDimensions'), + RDF.type, + OWL.Class +)) + +graph.add(( + URIRef(local + 'ComputationalComplexity'), + RDF.type, + OWL.Class +)) +graph.add(( + URIRef(local + 'LowComplexity'), + RDF.type, + OWL.Class +)) +graph.add(( + URIRef(local + 'LowComplexity'), + RDFS.subClassOf, + URIRef(local + 'ComputationalComplexity') +)) +graph.add(( + URIRef(local + 'MediumComplexity'), + RDF.type, + OWL.Class +)) +graph.add(( + URIRef(local + 'MediumComplexity'), + RDFS.subClassOf, + URIRef(local + 'ComputationalComplexity') +)) +graph.add(( + URIRef(local + 'HighComplexity'), + RDF.type, + OWL.Class +)) +graph.add(( + URIRef(local + 'HighComplexity'), + RDFS.subClassOf, + URIRef(local + 'ComputationalComplexity') +)) + +graph.add(( + URIRef(local + 'TemporalScale'), + RDF.type, + OWL.Class +)) +graph.add(( + URIRef(local + 'IntraFrame'), + RDF.type, + OWL.Class +)) +graph.add(( + URIRef(local + 'IntraFrame'), + RDFS.subClassOf, + URIRef(local + 'TemporalScale') +)) +graph.add(( + URIRef(local + 'InterFrame'), + RDF.type, + OWL.Class +)) +graph.add(( + URIRef(local + 'InterFrame'), + RDFS.subClassOf, + URIRef(local + 'TemporalScale') +)) +graph.add(( + URIRef(local + 'Global'), + RDF.type, + OWL.Class +)) +graph.add(( + URIRef(local + 'Global'), + RDFS.subClassOf, + URIRef(local + 'TemporalScale') +)) + + +graph.add(( + URIRef(local + 'ApplicationDomain'), + RDF.type, + OWL.Class +)) + +for key in appdom.keys(): + if appdom[key] != "": + idref = URIRef(local + appdom[key].replace(" ", "")) + graph.add(( + idref, + URIRef(RDF.type), + OWL.Class + )) + graph.add(( + idref, + RDFS.subClassOf, + URIRef(local + 'ApplicationDomain') + )) + +#properties +graph.add(( + URIRef(local + "application_domain"), + RDF.type, + RDF.Property +)) +graph.add(( + URIRef(local + "application_domain"), + RDFS.range, + URIRef(local + 'ApplicationDomain') +)) +graph.add(( + URIRef(local + "application_domain"), + VS['term_status'], + Literal("testing") +)) +graph.add(( + URIRef(local + "application_domain"), + RDFS.comment, + Literal("application domain property") +)) + + + +graph.add(( + URIRef(local + "semantic_interpretation"), + RDF.type, + RDF.Property +)) +graph.add(( + URIRef(local + "semantic_interpretation"), + VS['term_status'], + Literal("testing") +)) + +graph.add(( + URIRef(local + "computational_complexity"), + RDF.type, + RDF.Property +)) +graph.add(( + URIRef(local + "computational_complexity"), + VS['term_status'], + Literal("testing") +)) + +graph.add(( + URIRef(local + "computational_complexity"), + RDFS.range, + URIRef(local + 'ComputationalComplexity') +)) + +graph.add(( + URIRef(local + "psychoacoustic_model"), + RDF.type, + RDF.Property +)) +graph.add(( + URIRef(local + "psychoacoustic_model"), + RDFS.range, + XSD.Boolean +)) +graph.add(( + URIRef(local + "psychoacoustic_model"), + VS['term_status'], + Literal("testing") +)) + + +graph.add(( + URIRef(local + "dimensions"), + RDF.type, + RDF.Property +)) +graph.add(( + URIRef(local + "dimensions"), + RDFS.range, + XSD.Integer +)) +graph.add(( + URIRef(local + "dimensions"), + RDFS.range, + URIRef(local + 'ParametrizedDimensions') +)) + +graph.add(( + URIRef(local + "temporal_scale"), + RDF.type, + RDF.Property +)) +graph.add(( + URIRef(local + "temporal_scale"), + RDFS.range, + URIRef(local + 'TemporalScale') +)) + +for name in names: + id = local + (name.replace(' ','').replace('-','')) + + if name == order[domainIndex]: + domain = domains[order[domainIndex]] + domainIndex += 1 + + graph.add(( URIRef(id), + URIRef('http://www.w3.org/1999/02/22-rdf-syntax-ns#type'), + OWL.Class + )) + + graph.add(( + URIRef(id), + VS['term_status'], + Literal("testing") + )) + + if domain == "frequency": + if word[1] == 'Y': + temp = URIRef(local + 'FrequencyDomainPerceptualFeature') + else: + temp = URIRef(local + 'FrequencyDomainPhysicalFeature') + + graph.add(( + URIRef(id), + RDFS.subClassOf, + URIRef(temp) + )) + + else: + graph.add(( + URIRef(id), + RDFS.subClassOf, + URIRef(local + domain.capitalize().replace(' ', '') + 'Feature') + )) + + graph.add(( + URIRef(id), + #URIRef(local + 'feature'), + RDFS.label, + Literal(name.replace(' ','').replace('-','')) + )) + + graph.add(( + URIRef(id), + RDFS.comment, + Literal(name + " feature") + )) + + graph.add(( + URIRef(id), + RDFS.label, + Literal(name) + )) + + word = cat[i].split(' ') + + temp = { + 'I': URIRef(local+'IntraFrame'), + 'X': URIRef(local+'InterFrame'), + 'G': URIRef(local+'Global') + }[word[0]] + + graph.add(( + URIRef(id), + URIRef(local + 'temporal_scale'), + temp + )) + + + if word[1] == 'Y': + temp = URIRef(local + 'PerceptualFeature') + else: + temp = URIRef(local + 'PhysicalFeature') + + graph.add(( + URIRef(id), + URIRef(local + "semantic_interpretation"), + temp + )) + + if word[2] == 'Y': + graph.add(( + URIRef(id), + URIRef(local + "psychoacoustic_model"), + Literal(True) + )) + else: + graph.add(( + URIRef(id), + URIRef(local + "psychoacoustic_model"), + Literal(False) + )) + + temp = { + 'L': URIRef(local + 'LowComplexity'), + 'M': URIRef(local + 'MediumComplexity'), + 'H': URIRef(local + 'HighComplexity') + }[word[3]] + + graph.add(( + URIRef(id), + URIRef(local + "computational_complexity"), + temp + )) + + if word[4] == 'V': + temp = URIRef(local + 'ParametrizedDimensions') + else: + temp = Literal(int(word[4])) + + graph.add(( + URIRef(id), + URIRef(local + 'dimensions'), + temp + )) + + temp = appdom[word[5]] + + if temp != '': + graph.add(( + URIRef(id), + URIRef(local + "application_domain"), + URIRef(local + temp.replace(" ", "")) + )) + + steps = sig[i].split(' ') + + for key in steps: + graph.add(( + URIRef(id), + URIRef(local + 'computation'), + compdict[key] + )) + + if name.find('MPEG-7') >= 0: + graph.add(( + URIRef(id), + URIRef(local + 'computedIn'), + Literal('MPEG-7') + )) + #graph.add(( + # URIRef(local+name.replace('MPEG-7', '').lower().lstrip().replace(' ', '_')+'_feature'), + # RDF.type, + # URIRef(id) + #)) + + if name in abbr.keys(): + graph.add(( + URIRef(id), + URIRef(local + 'abbreviation'), + Literal(abbr[name]) + )) + + + i += 1 + + + +graph.serialize('/Users/alo/MusicOntology/features/baseOnto.n3', format='n3') +graph.serialize('/Users/alo/MusicOntology/features/baseOnto.rdf')
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/rdfpy/writeCatalogue.py Mon Feb 25 14:40:54 2013 +0000 @@ -0,0 +1,27 @@ +import rdflib, os, fnmatch, urllib2 +from rdflib import Graph, RDF, RDFS, plugin, URIRef, Literal, OWL +from xml.dom.minidom import parseString + +ns = 'http://sovarr.c4dm.eecs.qmul.ac.uk/features/' + +basedir = '/Users/alo/MusicOntology/features/' + +execfile(basedir + 'pdfextract/graphDefs.py') + +graph = Graph() +graph.bind('af', URIRef(ns)) +graph.bind('dc', URIRef('http://purl.org/dc/elements/1.1/')) +graph.bind('owl', OWL) + +addBaseTriples(graph, ns) + +loadBase( graph, basedir + 'rdf/base.rdf' ) + +for name in os.listdir(basedir+'rdf/'): + if fnmatch.fnmatch(name, 'af-*.rdf'): + addTriplesFromFile(graph, basedir+'rdf/'+name, ns) + +compareForSimilarities(graph, ns) + +graph.serialize(basedir + 'af-catalogue.rdf') +graph.serialize(basedir + 'af-catalogue.n3', format='n3') \ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/rdfpy/writeMIRToolboxOnto.py Mon Feb 25 14:40:54 2013 +0000 @@ -0,0 +1,125 @@ +import rdflib, os +from rdflib import Graph, RDF, RDFS, plugin, URIRef, Literal, OWL, Namespace + +basedir = '/Users/alo/MusicOntology/features/' + +local = 'http://sovarr.c4dm.eecs.qmul.ac.uk/features/' + +DC = Namespace(u"http://purl.org/dc/elements/1.1/") + +graph = Graph() +graph.bind('af', URIRef(local)) +graph.bind('dc', URIRef('http://purl.org/dc/elements/1.1/')) +graph.bind('owl', URIRef('http://www.w3.org/2002/07/owl#')) + +graph.add(( + URIRef(''), + RDF.type, + OWL.Ontology +)) + +graph.add(( + URIRef(''), + DC['title'], + Literal("MIR Toolbox Ontology") +)) + +graph.add(( + URIRef(''), + OWL.versionInfo, + Literal("Version 0.1") +)) + +graph.add(( + URIRef(''), + DC['description'], + Literal("This is an ontology derived from MIR Toolbox for the Audio Features engineering process") +)) + +source = Graph() +source.parse(basedir+'rdfonto/af-MIRToolbox.rdf') + +graph.add(( + URIRef(local+'Operator'), + RDF.type, + OWL.Class +)) +graph.add(( + URIRef(local+'FeatureExtractor'), + RDF.type, + OWL.Class +)) +graph.add(( + URIRef(local+'HighLevelFeature'), + RDF.type, + OWL.Class +)) + +for name in ['Structure', 'Statistics', 'Predictions', 'Similarity']: + idref = URIRef(local+name) + graph.add(( + idref, + RDF.type, + OWL.Class + )) + graph.add(( + idref, + RDFS.subClassOf, + URIRef(local+'HighLevelFeature') + )) + + +for name in ['Dynamics', 'Rhythm', 'Timbre', 'Pitch', 'Tonality']: + idref = URIRef(local+name+'FeatureExtractor') + graph.add(( + idref, + RDF.type, + OWL.Class + )) + graph.add(( + idref, + RDFS.subClassOf, + URIRef(local+'FeatureExtractor') + )) + +for su in source.subjects(RDF.type, RDFS.Resource): + idref = URIRef(local + su.split('/')[-1]) + graph.add(( + idref, + RDF.type, + OWL.Class + )) + + count=sum(1 for _ in source.objects(su, URIRef(local+'tag'))) + + if count == 1: + for it in source.objects(su, URIRef(local+'tag')): + graph.add(( + idref, + RDFS.subClassOf, + URIRef(local+it+'FeatureExtractor') + )) + + count = sum(1 for _ in source.objects(su, URIRef(local+'group'))) + + if count == 1: + for it in source.objects(su, URIRef(local+'group')): + graph.add(( + idref, + RDFS.subClassOf, + URIRef(local+it) + )) + + count=sum(1 for _ in source.objects(su, URIRef(local+'type'))) + + if count == 1: + for it in source.objects(su, URIRef(local+'type')): + if it == "Operator": + graph.add(( + idref, + RDFS.subClassOf, + URIRef(local+it) + )) + +graph.serialize(basedir + 'rdfonto/MIR-onto.rdf') +graph.serialize(basedir + 'rdfonto/MIR-onto.n3', format='n3') \ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/rdfpy/writeMarsyas.py Mon Feb 25 14:40:54 2013 +0000 @@ -0,0 +1,42 @@ +import rdflib, os, fnmatch, urllib2 +from rdflib import Graph, RDF, RDFS, plugin, URIRef, Literal, OWL + +############# Marsyas ############### +def removeNonAscii(s): return "".join(i for i in s if ord(i)<128) + +mdir = '/Users/alo/Development/MIR/marsyas-0.4.7/src/marsyas/' + +graph = Graph() +local = 'http://sovarr.c4dm.eecs.qmul.ac.uk/features/' +graph.bind('local', URIRef(local)) +graph.bind('dc', URIRef('http://purl.org/dc/elements/1.1/')) + +for name in os.listdir(mdir): + if fnmatch.fnmatch(name, '*.h'): + file = open(mdir + name) + code = file.read() + file.close() + if ('\ingroup' in code) and ('Analysis' in code): + if code.find('\class') == -1: + cl = name[:-2] + else: + cl = code[code.find('\class')+7:code.find('\n', code.find('\class')+7)] + + br = code[code.find('brief')+5:code.find('*/', code.find('brief')+5)] + br = br.replace('\n', ' ') + br = " ".join(br.split()) + + br = removeNonAscii(br) + + graph.add(( + URIRef(cl), + URIRef('http://www.w3.org/1999/02/22-rdf-syntax-ns#type'), + URIRef('http://www.w3.org/2000/01/rdf-schema#Resource') + )) + graph.add(( + URIRef(cl), + URIRef('http://purl.org/dc/elements/1.1/description'), + Literal(br) + )) + +graph.serialize('/Users/alo/MusicOntology/features/rdfn3/af-Marsyas.n3', format='n3')
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/rdfpy/writeMarsyasOnto.py Mon Feb 25 14:40:54 2013 +0000 @@ -0,0 +1,99 @@ +import rdflib +from rdflib import Graph, RDF, RDFS, plugin, URIRef, Literal, OWL, Namespace + +basedir = '/Users/alo/MusicOntology/features/' + +local = 'http://sovarr.c4dm.eecs.qmul.ac.uk/features/' + +DC = Namespace(u"http://purl.org/dc/elements/1.1/") + +graph = Graph() +graph.bind('af', URIRef(local)) +graph.bind('dc', URIRef('http://purl.org/dc/elements/1.1/')) +graph.bind('owl', URIRef('http://www.w3.org/2002/07/owl#')) + +graph.add(( + URIRef(''), + RDF.type, + OWL.Ontology +)) + +graph.add(( + URIRef(''), + DC['title'], + Literal("Marsyas Ontology") +)) + +graph.add(( + URIRef(''), + OWL.versionInfo, + Literal("Version 0.1") +)) + +graph.add(( + URIRef(''), + DC['description'], + Literal("This is an ontology derived from Marsyas feature extraction tools for the Audio Features engineering process") +)) + + +source = Graph() +source.parse(basedir+'rdfonto/af-Marsyas.n3', format='n3') + +categories = [] + +for su, ob in source.subject_objects(URIRef('file:///Users/alo/MusicOntology/features/rdf/type')): + if not ob in categories: + categories.append(ob) + +graph.add(( + URIRef(local+'Analysis'), + RDF.type, + OWL.Class +)) + +for category in categories: + graph.add(( + URIRef(local+category), + RDF.type, + OWL.Class + )) + graph.add(( + URIRef(local+category), + RDFS.subClassOf, + URIRef(local+'Analysis'), + )) + +for su in source.subjects(RDF.type, RDFS.Resource): + idref = URIRef(local+su.split('/')[-1]) + graph.add(( + idref, + RDF.type, + OWL.Class + )) + + count = sum(1 for _ in source.objects(su,URIRef('file:///Users/alo/MusicOntology/features/rdf/type'))) + + if count > 0: + for ob in source.objects(su,URIRef('file:///Users/alo/MusicOntology/features/rdf/type')): + graph.add(( + idref, + RDFS.subClassOf, + URIRef(local+ob) + )) + else: + graph.add(( + idref, + RDFS.subClassOf, + URIRef(local+'Analysis'), + )) + + for ob in source.objects(su,URIRef('http://purl.org/dc/elements/1.1/description')): + graph.add(( + idref, + URIRef('http://purl.org/dc/elements/1.1/description'), + ob + )) + +graph.serialize(basedir + 'rdfonto/Marsyas-onto.rdf') +graph.serialize(basedir + 'rdfonto/Marsyas-onto.n3', format='n3') \ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/rdfpy/writeRDFs.py Mon Feb 25 14:40:54 2013 +0000 @@ -0,0 +1,272 @@ +import rdflib, os, fnmatch, urllib2 +from rdflib import Graph, RDF, RDFS, plugin, URIRef, Literal, OWL +from xml.dom.minidom import parseString + +############# Vamp ############### + +vampdir = '/Users/alo/Library/Audio/Plug-Ins/Vamp/' + +source = Graph() + +graph = Graph() +local = 'http://sovarr.c4dm.eecs.qmul.ac.uk/features/' +graph.bind('local', URIRef(local)) +graph.bind('dc', URIRef('http://purl.org/dc/elements/1.1/')) + +for name in os.listdir(vampdir): + if fnmatch.fnmatch(name, '*.n3'): + + print (vampdir + name) + + source.parse(vampdir + name, format='n3') + + for su, pr in source.subject_predicates(URIRef('http://purl.org/ontology/vamp/Plugin')): + + for name in source.objects(su, URIRef('http://purl.org/ontology/vamp/name')): + id = name.replace(' ', '').replace('Marsyas-BatchFeatureExtract-', '') + feature = name + graph.add(( + URIRef(id), + URIRef('http://www.w3.org/1999/02/22-rdf-syntax-ns#type'), + URIRef('http://www.w3.org/2000/01/rdf-schema#Resource') + )) + graph.add(( + URIRef(id), + URIRef(local+'feature'), + Literal(feature) + )) + for domain in source.objects(su, URIRef('http://purl.org/ontology/vamp/input_domain')): + dom = domain.split('/')[-1].replace('Domain', '') + dom = dom.lower().replace('Time', 'temporal') + graph.add(( + URIRef(id), + URIRef(local+'domain'), + Literal(dom) + )) + for desc in source.objects(su, URIRef('http://purl.org/dc/elements/1.1/description')): + description = " ".join(desc.split()) + graph.add(( + URIRef(id), + URIRef('http://purl.org/dc/elements/1.1/description'), + Literal(description) + )) + for maker in source.objects(su, URIRef('http://xmlns.com/foaf/0.1/maker')): + for mname in source.objects(maker, URIRef('http://xmlns.com/foaf/0.1/name')): + makername = mname + graph.add(( + URIRef(id), + URIRef(local+'source'), + Literal(makername) + )) + + count=sum(1 for _ in source.objects(su, URIRef('http://purl.org/ontology/vamp/output'))) + + if count == 1: + for it in source.objects(su, URIRef('http://purl.org/ontology/vamp/output')): + for output in source.objects(it, URIRef('http://www.w3.org/1999/02/22-rdf-syntax-ns#type')): + out = output.split('/')[-1].replace('Output', '') + if out.find('Sparse') >= 0 or out.find('Dense') >= 0: + graph.add(( + URIRef(id), + URIRef(local+'output'), + Literal(out) + )) + + else: + for it in source.objects(su, URIRef('http://purl.org/ontology/vamp/output')): + for name in source.objects(it, URIRef('http://purl.org/dc/elements/1.1/title')): + if name != feature: + subid = name.replace(' ', '') + graph.add(( + URIRef(subid), + URIRef('http://www.w3.org/1999/02/22-rdf-syntax-ns#type'), + URIRef('http://www.w3.org/2000/01/rdf-schema#Resource') + )) + graph.add(( + URIRef(subid), + URIRef(local+'feature'), + Literal(name + " (" + feature + ")") + )) + graph.add(( + URIRef(subid), + URIRef(local+'domain'), + Literal(dom) + )) + graph.add(( + URIRef(subid), + URIRef(local+'source'), + Literal(makername) + )) + for output in source.objects(it, URIRef('http://www.w3.org/1999/02/22-rdf-syntax-ns#type')): + out = output.split('/')[-1].replace('Output', '') + if out.find('Sparse') >= 0 or out.find('Dense') >= 0: + graph.add(( + URIRef(subid), + URIRef(local+'output'), + Literal(out) + )) + +graph.serialize('/Users/alo/MusicOntology/features/rdf/af-Vamp.rdf') + +############# Marsyas ############### +mdir = '/Users/alo/Development/MIR/marsyas-0.4.7/src/marsyas/' + +madict = {} + +graph = Graph() +local = 'http://sovarr.c4dm.eecs.qmul.ac.uk/features/' +graph.bind('local', URIRef(local)) +graph.bind('dc', URIRef('http://purl.org/dc/elements/1.1/')) + +for name in os.listdir(mdir): + if fnmatch.fnmatch(name, '*.h'): + code = [line.strip() for line in open(mdir + name)] + found = False + for line in code: + if line.find('\ingroup Analysis') >= 0: + found = True + break + + if found: + i = 0 + cl = '' + for line in code: + if line.find('\class') >= 0: + cl = line.split(' ')[-1] + madict[cl] = {'brief': code[i+2][7:]} + if code[i+3] != '': + madict[cl]['brief'] += code[i+3] + + break + + i += 1 + + graph.add(( + URIRef(cl), + URIRef('http://www.w3.org/1999/02/22-rdf-syntax-ns#type'), + URIRef('http://www.w3.org/2000/01/rdf-schema#Resource') + )) + + graph.add(( + URIRef(cl), + URIRef('http://purl.org/dc/elements/1.1/description'), + Literal(madict[cl]['brief']) + )) + +graph.serialize('/Users/alo/MusicOntology/features/rdf/af-Marsyas.rdf') + +############# jMIR ############### +jdir = '/Users/alo/Development/MIR/jAudio/jAudio/' +jsrc = '/Users/alo/Development/MIR/jAudio/jAudio/src/jAudioFeatureExtractor/AudioFeatures/' + +file = urllib2.urlopen('file://' + jdir + 'features.xml') +data = file.read() +file.close() + +dom = parseString(data) +jmir = dom.getElementsByTagName('feature') + +graph = Graph() +local = 'http://sovarr.c4dm.eecs.qmul.ac.uk/features/' +graph.bind('local', URIRef(local)) +graph.bind('dc', URIRef('http://purl.org/dc/elements/1.1/')) + +for nodes in jmir: + jname = nodes.childNodes[1].firstChild.nodeValue.split('.')[-1] + graph.add(( + URIRef(jname), + URIRef('http://www.w3.org/1999/02/22-rdf-syntax-ns#type'), + URIRef('http://www.w3.org/2000/01/rdf-schema#Resource') + )) + file = open(jsrc + jname + '.java') + code = file.read() + searchstr = 'String name =' + start = code.find(searchstr) + len(searchstr) + start = code.find('"', start) + 1 + end = code.find('"', start) + name = code[start:end] + + if name > "": + graph.add(( + URIRef(jname), + URIRef(local+'name'), + Literal(name) + )) + + searchstr = 'String description' + start = code.find(searchstr) + len(searchstr) + start = code.find('"', start) + 1 + end = code.find('";', start) + desc = code[start:end] + desc = desc.replace(" ", "").replace("\t", "").replace('\n', '').replace('+', '').replace('"', '').replace(';', '').replace('//\n', '') + desc = " ".join(desc.split()) + + if desc > "": + graph.add(( + URIRef(jname), + URIRef('http://purl.org/dc/elements/1.1/description'), + Literal(desc) + )) + + +graph.serialize('/Users/alo/MusicOntology/features/rdf/af-jMIR.rdf') + + +############# yaafe ############### + +graph = Graph() +local = 'http://sovarr.c4dm.eecs.qmul.ac.uk/features/' +graph.bind('local', URIRef(local)) +graph.bind('dc', URIRef('http://purl.org/dc/elements/1.1/')) + +path = "/Users/alo/Development/MIR/yaafe-v0.64/src_python/yaafefeatures.py" + +lines = [line.strip() for line in open(path)] + +count = 0 + +for ln in lines: + if ln.find('class ') >= 0: + yname = ln[6:ln.find('(AudioFeature)')] + desc = lines[count+2] + desc = desc.replace("`", "").replace("<", "").replace(">", "") + desc = " ".join(desc.split()) + + graph.add(( + URIRef(yname), + URIRef('http://www.w3.org/1999/02/22-rdf-syntax-ns#type'), + URIRef('http://www.w3.org/2000/01/rdf-schema#Resource') + )) + + graph.add(( + URIRef(yname), + URIRef('http://purl.org/dc/elements/1.1/description'), + Literal(desc) + )) + + count += 1 + +graph.serialize('/Users/alo/MusicOntology/features/rdf/af-Yaafe.rdf') + +############# libXtract ############### +graph = Graph() +local = 'http://sovarr.c4dm.eecs.qmul.ac.uk/features/' +graph.bind('local', URIRef(local)) +graph.bind('dc', URIRef('http://purl.org/dc/elements/1.1/')) + +path = '/Users/alo/Development/MIR/LibXtract/xtract/libxtract.h' + +lines = [line.strip() for line in open(path)] + +xtract = lines[(lines.index('enum xtract_features_ {')+1):(lines.index('XTRACT_WINDOWED')-1)] + +for ln in xtract: + xname = ln[(ln.index('_')+1):-1].replace("_", " ").lower().capitalize() + + graph.add(( + URIRef(xname), + URIRef('http://www.w3.org/1999/02/22-rdf-syntax-ns#type'), + URIRef('http://www.w3.org/2000/01/rdf-schema#Resource') + )) + +graph.serialize('/Users/alo/MusicOntology/features/rdf/af-libXtract.rdf')