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1 @prefix Yaafe: <file:///Users/alo/MusicOntology/features/rdf/> .
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2 @prefix dc: <http://purl.org/dc/elements/1.1/> .
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3 @prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
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4
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5 Yaafe:AmplitudeModulation a rdfs:Resource ;
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6 dc:description "Tremelo and Grain description, according to [SE2005]_ and [AE2001]_." .
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7
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8 Yaafe:AutoCorrelation a rdfs:Resource ;
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9 dc:description "Compute autocorrelation coefficients *ac* on each frames." .
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10
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11 Yaafe:AutoCorrelationPeaksIntegrator a rdfs:Resource ;
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12 dc:description "Feature transform that compute peaks of the autocorrelation function, outputs peaks and amplitude." .
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13
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14 Yaafe:Cepstrum a rdfs:Resource ;
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15 dc:description "Feature transform that compute cepstrum coefficients of input feature frames. (use DCT II)" .
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16
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17 Yaafe:ComplexDomainOnsetDetection a rdfs:Resource ;
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18 dc:description "Compute onset detection using a complex domain spectral flux method [CD2003]_." .
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19
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20 Yaafe:Derivate a rdfs:Resource ;
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21 dc:description "Compute temporal derivative of input feature. The derivative is approximated by" .
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22
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23 Yaafe:Energy a rdfs:Resource ;
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24 dc:description "Compute energy as root mean square of an audio Frame." .
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25
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26 Yaafe:Envelope a rdfs:Resource ;
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27 dc:description "Extract amplitude envelope using hilbert transform, low-pass filtering and decimation." .
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28
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29 Yaafe:EnvelopeShapeStatistics a rdfs:Resource ;
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30 dc:description "Centroid, spread, skewness and kurtosis of each frame's amplitude envelope. For more details about moments, see :ref:Shape Statistics shapestatistics." .
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31
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32 Yaafe:Frames a rdfs:Resource ;
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33 dc:description "Segment input signal into frames." .
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34
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35 Yaafe:HistogramIntegrator a rdfs:Resource ;
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36 dc:description "Feature transform that compute histogram of input values" .
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37
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38 Yaafe:LPC a rdfs:Resource ;
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39 dc:description "Compute the Linear Predictor Coefficients (LPC) of a signal frame. It uses autocorrelation and Levinson-Durbin algorithm. see [JM1975]_." .
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40
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41 Yaafe:LSF a rdfs:Resource ;
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42 dc:description "Compute the Line Spectral Frequency (LSF) coefficients of a signal frame. Algorithm was adapted from ([TB2006]_, [SH1976]_)." .
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43
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44 Yaafe:Loudness a rdfs:Resource ;
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45 dc:description "The loudness coefficients are the energy in each Bark band, normalized by the overall sum. see [GP2004]_ and [MG1997]_ for more details." .
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46
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47 Yaafe:MFCC a rdfs:Resource ;
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48 dc:description "Compute the Mel-frequencies cepstrum coefficients [DM1980]_." .
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49
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50 Yaafe:MagnitudeSpectrum a rdfs:Resource ;
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51 dc:description "Compute frame's magnitude spectrum, using an analysis window (Hanning or Hamming), or not." .
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52
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53 Yaafe:MelSpectrum a rdfs:Resource ;
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54 dc:description "Compute the Mel-frequencies spectrum [DM1980]_." .
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55
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56 Yaafe:OBSI a rdfs:Resource ;
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57 dc:description "Compute Octave band signal intensity using a trigular octave filter bank ([SE2005]_)." .
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58
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59 Yaafe:OBSIR a rdfs:Resource ;
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60 dc:description "Compute log of :class:OBSI ratio between consecutive octave." .
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61
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62 Yaafe:PerceptualSharpness a rdfs:Resource ;
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63 dc:description "Compute the sharpness of :class:Loudness coefficients, according to [GP2004]_." .
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64
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65 Yaafe:PerceptualSpread a rdfs:Resource ;
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66 dc:description "Compute the spread of :class:Loudness coefficients, according to [GP2004]_." .
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67
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68 Yaafe:SlopeIntegrator a rdfs:Resource ;
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69 dc:description "Feature transform that compute the slope of input feature over the given number of frames." .
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70
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71 Yaafe:SpectralCrestFactorPerBand a rdfs:Resource ;
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72 dc:description "Compute spectral crest factor per log-spaced band of 1/4 octave." .
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73
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74 Yaafe:SpectralDecrease a rdfs:Resource ;
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75 dc:description "Compute spectral decrease accoding to [GP2004]_." .
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76
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77 Yaafe:SpectralFlatness a rdfs:Resource ;
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78 dc:description "Compute global spectral flatness using the ratio between geometric and arithmetic mean." .
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79
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80 Yaafe:SpectralFlatnessPerBand a rdfs:Resource ;
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81 dc:description "Compute spectral flatness per log-spaced band of 1/4 octave, as proposed in MPEG7 standard." .
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82
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83 Yaafe:SpectralFlux a rdfs:Resource ;
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84 dc:description "Compute flux of :class:spectrum MagnitudeSpectrum between consecutives frames." .
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85
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86 Yaafe:SpectralRolloff a rdfs:Resource ;
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87 dc:description "Spectral roll-off is the frequency so that 99% of the energy is contained below. see [SS1997]_." .
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88
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89 Yaafe:SpectralShapeStatistics a rdfs:Resource ;
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90 dc:description "Compute shape statistics of :class:MagnitudeSpectrum, (see [GR2004]_)." .
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91
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92 Yaafe:SpectralSlope a rdfs:Resource ;
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93 dc:description "SpectralSlope is computed by linear regression of the spectral amplitude. (see [GP2004]_)" .
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94
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95 Yaafe:SpectralVariation a rdfs:Resource ;
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96 dc:description "SpectralVariation is the normalized correlation of :class:spectrum MagnitudeSpectrum between consecutive frames. (see [GP2004]_)" .
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97
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98 Yaafe:StatisticalIntegrator a rdfs:Resource ;
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99 dc:description "Feature transform that compute the temporal mean and variance of input feature over the given number of frames." .
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100
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101 Yaafe:TemporalShapeStatistics a rdfs:Resource ;
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102 dc:description "Compute :ref:shape statistics shapestatistics of signal frames." .
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103
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104 Yaafe:ZCR a rdfs:Resource ;
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105 dc:description "Compute zero-crossing rate in frames. see [SS1997]_." .
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106
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