view rdfonto/aubio-onto.rdf @ 18:d5012016bf64 tip

added rdfpy and rdfonto directories

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<rdf:RDF
   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/PitchSchmitt">
    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/>
    <dc:description>Pitch detection using a Schmitt trigger</dc:description>
    <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PitchDetection"/>
  </rdf:Description>
  <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralKurtosis">
    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/>
    <dc:description>The kurtosis is a measure of the flatness of the spectrum, computed from the fourth order moment.</dc:description>
    <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralFeature"/>
  </rdf:Description>
  <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralRolloff">
    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/>
    <dc:description>This function returns the bin number below which 95% of the spectrum energy is found.</dc:description>
    <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralFeature"/>
  </rdf:Description>
  <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ModifiedKullbackLieblerOnsetDetectionFunction">
    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/>
    <dc:description>Modified Kullback-Liebler onset detection function.</dc:description>
    <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/OnsetDetection"/>
  </rdf:Description>
  <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/HighFrequencyContentOnsetDetectionFunction">
    <rdf:type rdf:resource="http://www.w3.org/2002/07/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</dc:description>
    <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/OnsetDetection"/>
  </rdf:Description>
  <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralDecrease">
    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/>
    <dc:description>The spectral decrease is another representation of the decreasing rate, based on perceptual criteria.</dc:description>
    <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralFeature"/>
  </rdf:Description>
  <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/KullbackLieblerOnsetDetectionFunction">
    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/>
    <dc:description>Kullback-Liebler onset detection function.</dc:description>
    <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/OnsetDetection"/>
  </rdf:Description>
  <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Pitch">
    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/>
    <dc:description>Generic method for pitch detection</dc:description>
    <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PitchDetection"/>
  </rdf:Description>
  <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PitchFastComb">
    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/>
    <dc:description>Pitch detection using a fast harmonic comb filter</dc:description>
    <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PitchDetection"/>
  </rdf:Description>
  <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PitchDetection">
    <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/Onset">
    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/>
    <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>
    <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/OnsetDetection"/>
  </rdf:Description>
  <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PhaseVocoder">
    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/>
    <dc:description>This object implements a phase vocoder. The spectral frames are computed using a HanningZ window and a swapped version of the signal to simplify the phase relationships across frames. The window sizes and overlap are specified at creation time.</dc:description>
    <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralFeature"/>
  </rdf:Description>
  <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralSlope">
    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/>
    <dc:description>The spectral slope represents decreasing rate of the spectral amplitude, computed using a linear regression.</dc:description>
    <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralFeature"/>
  </rdf:Description>
  <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/OnsetDetectionFunction">
    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/>
    <dc:description>These functions are designed to raise at notes attacks in music signals.</dc:description>
    <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/OnsetDetection"/>
  </rdf:Description>
  <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/BiquadFilter">
    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/>
    <dc:description>Second order Infinite Impulse Response filter.</dc:description>
    <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DigitalFilter"/>
  </rdf:Description>
  <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/CWeightingFilterCoefficients">
    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/>
    <dc:description>A C-weighting digital filter, which reduces low and high frequencies and enhance the middle ones to reflect the ability of the human hearing.</dc:description>
    <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DigitalFilter"/>
  </rdf:Description>
  <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralSkewness">
    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/>
    <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>
    <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralFeature"/>
  </rdf:Description>
  <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/BeatTracking">
    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/>
    <dc:description>Beat tracking using a context dependant model.</dc:description>
    <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Tempo"/>
  </rdf:Description>
  <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PitchMultiComb">
    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/>
    <dc:description>Pitch detection using multiple-comb filter</dc:description>
    <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PitchDetection"/>
  </rdf:Description>
  <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/ComplexDomainMethodOnsetDetectionFunction">
    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/>
    <dc:description>Complex Domain Method onset detection function.</dc:description>
    <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/OnsetDetection"/>
  </rdf:Description>
  <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Tempo">
    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/>
    <dc:description>Tempo detection driver. This object stores all the memory required for tempo detection algorithm and returns the estimated beat locations.</dc:description>
    <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Tempo"/>
  </rdf:Description>
  <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralCentroid">
    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/>
    <dc:description>The spectral centroid represents the barycenter of the spectrum.</dc:description>
    <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralFeature"/>
  </rdf:Description>
  <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/OnsetDetection">
    <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">
    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/>
    <dc:description>Pitch detection using the YIN algorithm</dc:description>
    <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PitchDetection"/>
  </rdf:Description>
  <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/Resampler">
    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/>
    <dc:description>This object resamples an input vector into an output vector using libsamplerate.</dc:description>
    <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DigitalFilter"/>
  </rdf:Description>
  <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralFlux">
    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/>
    <dc:description>Spectral Flux</dc:description>
    <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralFeature"/>
  </rdf:Description>
  <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralSpread">
    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/>
    <dc:description>The spectral spread is the variance of the spectral distribution around its centroid.</dc:description>
    <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralFeature"/>
  </rdf:Description>
  <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PeakPicker">
    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/>
    <dc:description>Peak picking utilities function</dc:description>
    <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/OnsetDetection"/>
  </rdf:Description>
  <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/TransientSteadyStateSeparation">
    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/>
    <dc:description>Transient / Steady-state Separation (TSS)</dc:description>
    <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralFeature"/>
  </rdf:Description>
  <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DigitalFilter">
    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/>
    <dc:description>This object stores a digital filter of order N.</dc:description>
    <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DigitalFilter"/>
  </rdf:Description>
  <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/MFCC">
    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/>
    <dc:description>Mel-frequency cepstrum coefficients object</dc:description>
    <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralFeature"/>
  </rdf:Description>
  <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralFeature">
    <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/PitchFftYin">
    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/>
    <dc:description>Pitch detection using a spectral implementation of the YIN algorithm</dc:description>
    <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PitchDetection"/>
  </rdf:Description>
  <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/FilterbankMel">
    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/>
    <dc:description>Mel frequency filter bank coefficients. Set filter bank coefficients to Mel frequency bands</dc:description>
    <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralFeature"/>
  </rdf:Description>
  <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PhaseBasedMethodOnsetDetectionFunction">
    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/>
    <dc:description>Phase Based Method onset detection function.</dc:description>
    <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/OnsetDetection"/>
  </rdf:Description>
  <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/AWeightingFilterCoefficients">
    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/>
    <dc:description>An A-weighting digital filter, which reduces low and high frequencies and enhance the middle ones to reflect the ability of the human hearing.</dc:description>
    <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/DigitalFilter"/>
  </rdf:Description>
  <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/EnergyBasedOnsetDetectionFunction">
    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/>
    <dc:description>This function calculates the local energy of the input spectral frame.</dc:description>
    <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/OnsetDetection"/>
  </rdf:Description>
  <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralDifferenceMethodOnsetDetectionFunction">
    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/>
    <dc:description>Spectral difference method onset detection function.</dc:description>
    <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/PitchDetection"/>
  </rdf:Description>
  <rdf:Description rdf:about="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralShapeDescriptors">
    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/>
    <dc:description>Spectral shape descriptors</dc:description>
    <rdfs:subClassOf rdf:resource="http://sovarr.c4dm.eecs.qmul.ac.uk/features/SpectralFeature"/>
  </rdf:Description>
</rdf:RDF>