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added rdfpy and rdfonto directories
author nothing@tehis.net
date Tue, 23 Apr 2013 11:49:20 +0100
parents 62d2c72e4223
children
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<?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>