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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: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>