Analysis Descriptor Documentation

Contents

Analysis Settings

The analysis sample rate is 44100Hz and the audio file’s channels are mixed down to mono. For the lowlevel namespace the frame size is 2048 samples with a hop size of 1024, while for the tonal namespace the frame size is 4096 and the hop size 2048.

Acronyms for the statistics

Generally, the lowlevel descriptors have the statistics mean, max, min, var, dmean, dmean2, dvar, and dvar2. These should be read as follows.

Statistic  
mean The arithmetic mean
max The maximum value
min The minimum value
var The variance
dmean The mean of the derivative
dmean2 The mean of the second derivative
dvar The variance of the derivative
dvar2 The variance of the second derivative

Metadata Descriptors

metadata.version

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/metadata/version

Lowlevel Descriptors

lowlevel.spectral_complexity

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/lowlevel/spectral_complexity

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_SpectralComplexity.html

Stats:

/min
/max
/dvar2
/dmean2
/dmean
/var
/dvar
/mean

Distribution in Freesound

_images/lowlevel.spectral_complexity.mean.png

lowlevel.silence_rate_20dB

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/lowlevel/silence_rate_20dB

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_SilenceRate.html

Stats:

/min
/max
/dvar2
/dmean2
/dmean
/var
/dvar
/mean

Distribution in Freesound

_images/lowlevel.silence_rate_20dB.mean.png

lowlevel.erb_bands

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/lowlevel/erb_bands

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_ERBBands.html

Stats:

/min
/max
/dvar2
/dmean2
/dmean
/var
/dvar
/mean

Distribution in Freesound

_images/lowlevel.erb_bands.mean.000.png _images/lowlevel.erb_bands.mean.001.png _images/lowlevel.erb_bands.mean.002.png _images/lowlevel.erb_bands.mean.003.png _images/lowlevel.erb_bands.mean.004.png _images/lowlevel.erb_bands.mean.005.png _images/lowlevel.erb_bands.mean.006.png _images/lowlevel.erb_bands.mean.007.png _images/lowlevel.erb_bands.mean.008.png _images/lowlevel.erb_bands.mean.009.png _images/lowlevel.erb_bands.mean.010.png _images/lowlevel.erb_bands.mean.011.png _images/lowlevel.erb_bands.mean.012.png _images/lowlevel.erb_bands.mean.013.png _images/lowlevel.erb_bands.mean.014.png _images/lowlevel.erb_bands.mean.015.png _images/lowlevel.erb_bands.mean.016.png _images/lowlevel.erb_bands.mean.017.png

lowlevel.average_loudness

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/lowlevel/average_loudness

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_Loudness.html
_images/lowlevel.average_loudness.png

lowlevel.spectral_rms

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/lowlevel/spectral_rms

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_RMS.html

Stats:

/min
/max
/dvar2
/dmean2
/dmean
/var
/dvar
/mean

Distribution in Freesound

_images/lowlevel.spectral_rms.mean.png

lowlevel.spectral_kurtosis

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/lowlevel/spectral_kurtosis

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_CentralMoments.html

Stats:

/min
/max
/dvar2
/dmean2
/dmean
/var
/dvar
/mean

Distribution in Freesound

_images/lowlevel.spectral_kurtosis.mean.png

lowlevel.barkbands_kurtosis

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/lowlevel/barkbands_kurtosis

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_CentralMoments.html

Stats:

/min
/max
/dmean2
/dmean
/var
/mean

Distribution in Freesound

_images/lowlevel.barkbands_kurtosis.mean.png

lowlevel.scvalleys

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/lowlevel/scvalleys

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_SpectralContrast.html

Stats:

/min
/max
/dvar2
/dmean2
/dmean
/var
/dvar
/mean

Distribution in Freesound

_images/lowlevel.scvalleys.mean.000.png _images/lowlevel.scvalleys.mean.001.png _images/lowlevel.scvalleys.mean.002.png _images/lowlevel.scvalleys.mean.003.png _images/lowlevel.scvalleys.mean.004.png _images/lowlevel.scvalleys.mean.005.png

lowlevel.spectral_spread

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/lowlevel/spectral_spread

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_CentralMoments.html

Stats:

/min
/max
/dvar2
/dmean2
/dmean
/var
/dvar
/mean

Distribution in Freesound

_images/lowlevel.spectral_spread.mean.png

lowlevel.pitch

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/lowlevel/pitch

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_PitchYinFFT.html

Stats:

/min
/max
/dvar2
/dmean2
/dmean
/var
/dvar
/mean

Distribution in Freesound

_images/lowlevel.pitch.mean.png

lowlevel.dissonance

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/lowlevel/dissonance

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_Dissonance.html

Stats:

/min
/max
/dvar2
/dmean2
/dmean
/var
/dvar
/mean

Distribution in Freesound

_images/lowlevel.dissonance.mean.png

lowlevel.spectral_energyband_high

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/lowlevel/spectral_energyband_high

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_EnergyBand.html

Stats:

/min
/max
/dvar2
/dmean2
/dmean
/var
/dvar
/mean

Distribution in Freesound

_images/lowlevel.spectral_energyband_high.mean.png

lowlevel.gfcc

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/lowlevel/gfcc

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_GFCC.html

Stats:

/min
/max
/dvar2
/dmean2
/dmean
/var
/dvar
/mean

Distribution in Freesound

_images/lowlevel.gfcc.mean.000.png _images/lowlevel.gfcc.mean.001.png _images/lowlevel.gfcc.mean.002.png _images/lowlevel.gfcc.mean.003.png _images/lowlevel.gfcc.mean.004.png _images/lowlevel.gfcc.mean.005.png _images/lowlevel.gfcc.mean.006.png _images/lowlevel.gfcc.mean.007.png _images/lowlevel.gfcc.mean.008.png _images/lowlevel.gfcc.mean.009.png _images/lowlevel.gfcc.mean.010.png _images/lowlevel.gfcc.mean.011.png _images/lowlevel.gfcc.mean.012.png

lowlevel.spectral_flux

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/lowlevel/spectral_flux

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_Flux.html

Stats:

/min
/max
/dvar2
/dmean2
/dmean
/var
/dvar
/mean

Distribution in Freesound

_images/lowlevel.spectral_flux.mean.png

lowlevel.silence_rate_30dB

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/lowlevel/silence_rate_30dB

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_SilenceRate.html

Stats:

/min
/max
/dvar2
/dmean2
/dmean
/var
/dvar
/mean

Distribution in Freesound

_images/lowlevel.silence_rate_30dB.mean.png

lowlevel.spectral_contrast

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/lowlevel/spectral_contrast

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_SpectralContrast.html

Stats:

/min
/max
/dvar2
/dmean2
/dmean
/var
/dvar
/mean

Distribution in Freesound

_images/lowlevel.spectral_contrast.mean.000.png _images/lowlevel.spectral_contrast.mean.001.png _images/lowlevel.spectral_contrast.mean.002.png _images/lowlevel.spectral_contrast.mean.003.png _images/lowlevel.spectral_contrast.mean.004.png _images/lowlevel.spectral_contrast.mean.005.png

lowlevel.spectral_energyband_middle_high

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/lowlevel/spectral_energyband_middle_high

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_EnergyBand.html

Stats:

/min
/max
/dvar2
/dmean2
/dmean
/var
/dvar
/mean

Distribution in Freesound

_images/lowlevel.spectral_energyband_middle_high.mean.png

lowlevel.barkbands_spread

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/lowlevel/barkbands_spread

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_CentralMoments.html

Stats:

/min
/max
/dvar2
/dmean2
/dmean
/var
/dvar
/mean

Distribution in Freesound

_images/lowlevel.barkbands_spread.mean.png

lowlevel.spectral_centroid

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/lowlevel/spectral_centroid

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_Centroid.html

Stats:

/min
/max
/dvar2
/dmean2
/dmean
/var
/dvar
/mean

Distribution in Freesound

_images/lowlevel.spectral_centroid.mean.png

lowlevel.pitch_salience

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/lowlevel/pitch_salience

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_PitchSalience.html

Stats:

/min
/max
/dvar2
/dmean2
/dmean
/var
/dvar
/mean

Distribution in Freesound

_images/lowlevel.pitch_salience.mean.png

lowlevel.silence_rate_60dB

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/lowlevel/silence_rate_60dB

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_SilenceRate.html

Stats:

/min
/max
/dvar2
/dmean2
/dmean
/var
/dvar
/mean

Distribution in Freesound

_images/lowlevel.silence_rate_60dB.mean.png

lowlevel.spectral_entropy

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/lowlevel/spectral_entropy

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_Entropy.html

Stats:

/min
/max
/dvar2
/dmean2
/dmean
/var
/dvar
/mean

Distribution in Freesound

_images/lowlevel.spectral_entropy.mean.png

lowlevel.spectral_rolloff

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/lowlevel/spectral_rolloff

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_RollOff.html

Stats:

/min
/max
/dvar2
/dmean2
/dmean
/var
/dvar
/mean

Distribution in Freesound

_images/lowlevel.spectral_rolloff.mean.png

lowlevel.barkbands

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/lowlevel/barkbands

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_BarkBands.html

Stats:

/min
/max
/dvar2
/dmean2
/dmean
/var
/dvar
/mean

Distribution in Freesound

_images/lowlevel.barkbands.mean.000.png _images/lowlevel.barkbands.mean.001.png _images/lowlevel.barkbands.mean.002.png _images/lowlevel.barkbands.mean.003.png _images/lowlevel.barkbands.mean.004.png _images/lowlevel.barkbands.mean.005.png _images/lowlevel.barkbands.mean.006.png _images/lowlevel.barkbands.mean.007.png _images/lowlevel.barkbands.mean.008.png _images/lowlevel.barkbands.mean.009.png _images/lowlevel.barkbands.mean.010.png _images/lowlevel.barkbands.mean.011.png _images/lowlevel.barkbands.mean.012.png _images/lowlevel.barkbands.mean.013.png _images/lowlevel.barkbands.mean.014.png _images/lowlevel.barkbands.mean.015.png _images/lowlevel.barkbands.mean.016.png _images/lowlevel.barkbands.mean.017.png _images/lowlevel.barkbands.mean.018.png _images/lowlevel.barkbands.mean.019.png _images/lowlevel.barkbands.mean.020.png _images/lowlevel.barkbands.mean.021.png _images/lowlevel.barkbands.mean.022.png _images/lowlevel.barkbands.mean.023.png _images/lowlevel.barkbands.mean.024.png _images/lowlevel.barkbands.mean.025.png _images/lowlevel.barkbands.mean.026.png

lowlevel.spectral_energyband_low

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/lowlevel/spectral_energyband_low

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_EnergyBand.html

Stats:

/min
/max
/dvar2
/dmean2
/dmean
/var
/dvar
/mean

Distribution in Freesound

_images/lowlevel.spectral_energyband_low.mean.png

lowlevel.barkbands_skewness

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/lowlevel/barkbands_skewness

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_CentralMoments.html

Stats:

/min
/max
/dvar2
/dmean2
/dmean
/var
/dvar
/mean

Distribution in Freesound

_images/lowlevel.barkbands_skewness.mean.png

lowlevel.pitch_instantaneous_confidence

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/lowlevel/pitch_instantaneous_confidence

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_PitchYinFFT.html

Stats:

/min
/max
/dvar2
/dmean2
/dmean
/var
/dvar
/mean

Distribution in Freesound

_images/lowlevel.pitch_instantaneous_confidence.mean.png

lowlevel.spectral_energyband_middle_low

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/lowlevel/spectral_energyband_middle_low

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_EnergyBand.html

Stats:

/min
/max
/dvar2
/dmean2
/dmean
/var
/dvar
/mean

Distribution in Freesound

_images/lowlevel.spectral_energyband_middle_low.mean.png

lowlevel.spectral_strongpeak

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/lowlevel/spectral_strongpeak

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_StrongPeak.html

Stats:

/min
/max
/dvar2
/dmean2
/dmean
/var
/dvar
/mean

Distribution in Freesound

_images/lowlevel.spectral_strongpeak.mean.png

lowlevel.startFrame

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/lowlevel/startFrame

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_StartStopSilence.html
_images/lowlevel.startFrame.png

lowlevel.spectral_decrease

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/lowlevel/spectral_decrease

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_Decrease.html

Stats:

/dmean2
/dmean
/mean
/max
/min

Distribution in Freesound

_images/lowlevel.spectral_decrease.mean.png

lowlevel.stopFrame

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/lowlevel/stopFrame

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_StartStopSilence.html
_images/lowlevel.stopFrame.png

lowlevel.mfcc

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/lowlevel/mfcc

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_MFCC.html

Stats:

/min
/max
/dvar2
/dmean2
/dmean
/var
/dvar
/mean

Distribution in Freesound

_images/lowlevel.mfcc.mean.000.png _images/lowlevel.mfcc.mean.001.png _images/lowlevel.mfcc.mean.002.png _images/lowlevel.mfcc.mean.003.png _images/lowlevel.mfcc.mean.004.png _images/lowlevel.mfcc.mean.005.png _images/lowlevel.mfcc.mean.006.png _images/lowlevel.mfcc.mean.007.png _images/lowlevel.mfcc.mean.008.png _images/lowlevel.mfcc.mean.009.png _images/lowlevel.mfcc.mean.010.png _images/lowlevel.mfcc.mean.011.png _images/lowlevel.mfcc.mean.012.png

lowlevel.spectral_energy

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/lowlevel/spectral_energy

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_Energy.html

Stats:

/min
/max
/dvar2
/dmean2
/dmean
/var
/dvar
/mean

Distribution in Freesound

_images/lowlevel.spectral_energy.mean.png

lowlevel.spectral_flatness_db

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/lowlevel/spectral_flatness_db

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_FlatnessDB.html

Stats:

/min
/max
/dvar2
/dmean2
/dmean
/var
/dvar
/mean

Distribution in Freesound

_images/lowlevel.spectral_flatness_db.mean.png

lowlevel.frequency_bands

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/lowlevel/frequency_bands

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_FrequencyBands.html

Stats:

/min
/max
/dvar2
/dmean2
/dmean
/var
/dvar
/mean

Distribution in Freesound

_images/lowlevel.frequency_bands.mean.000.png _images/lowlevel.frequency_bands.mean.001.png _images/lowlevel.frequency_bands.mean.002.png _images/lowlevel.frequency_bands.mean.003.png _images/lowlevel.frequency_bands.mean.004.png _images/lowlevel.frequency_bands.mean.005.png _images/lowlevel.frequency_bands.mean.006.png _images/lowlevel.frequency_bands.mean.007.png _images/lowlevel.frequency_bands.mean.008.png _images/lowlevel.frequency_bands.mean.009.png _images/lowlevel.frequency_bands.mean.010.png _images/lowlevel.frequency_bands.mean.011.png _images/lowlevel.frequency_bands.mean.012.png _images/lowlevel.frequency_bands.mean.013.png _images/lowlevel.frequency_bands.mean.014.png _images/lowlevel.frequency_bands.mean.015.png _images/lowlevel.frequency_bands.mean.016.png _images/lowlevel.frequency_bands.mean.017.png _images/lowlevel.frequency_bands.mean.018.png _images/lowlevel.frequency_bands.mean.019.png _images/lowlevel.frequency_bands.mean.020.png _images/lowlevel.frequency_bands.mean.021.png _images/lowlevel.frequency_bands.mean.022.png _images/lowlevel.frequency_bands.mean.023.png _images/lowlevel.frequency_bands.mean.024.png _images/lowlevel.frequency_bands.mean.025.png _images/lowlevel.frequency_bands.mean.026.png _images/lowlevel.frequency_bands.mean.027.png

lowlevel.zerocrossingrate

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/lowlevel/zerocrossingrate

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_ZeroCrossingRate.html

Stats:

/min
/max
/dvar2
/dmean2
/dmean
/var
/dvar
/mean

Distribution in Freesound

_images/lowlevel.zerocrossingrate.mean.png

lowlevel.spectral_skewness

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/lowlevel/spectral_skewness

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_CentralMoments.html

Stats:

/min
/max
/dvar2
/dmean2
/dmean
/var
/dvar
/mean

Distribution in Freesound

_images/lowlevel.spectral_skewness.mean.png

lowlevel.hfc

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/lowlevel/hfc

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_HFC.html

Stats:

/min
/max
/dvar2
/dmean2
/dmean
/var
/dvar
/mean

Distribution in Freesound

_images/lowlevel.hfc.mean.png

lowlevel.spectral_crest

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/lowlevel/spectral_crest

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_Crest.html

Stats:

/min
/max
/dvar2
/dmean2
/dmean
/var
/dvar
/mean

Distribution in Freesound

_images/lowlevel.spectral_crest.mean.png

Rhythm Descriptors

rhythm.first_peak_bpm

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/rhythm/first_peak_bpm

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_BpmHistogramDescriptors.html

Stats:

/max
/min
/mean

Distribution in Freesound

_images/rhythm.first_peak_bpm.mean.png

rhythm.onset_times

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/rhythm/onset_times

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_OnsetRate.html

rhythm.beats_count

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/rhythm/beats_count

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_RhythmExtractor2013.html
_images/rhythm.beats_count.png

rhythm.beats_loudness

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/rhythm/beats_loudness

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_BeatsLoudness.html

Stats:

/min
/max
/dvar2
/dmean2
/dmean
/var
/dvar
/mean

Distribution in Freesound

_images/rhythm.beats_loudness.mean.png

rhythm.first_peak_spread

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/rhythm/first_peak_spread

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_BpmHistogramDescriptors.html

Stats:

/max
/min
/mean

Distribution in Freesound

_images/rhythm.first_peak_spread.mean.png

rhythm.second_peak_weight

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/rhythm/second_peak_weight

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_BpmHistogramDescriptors.html

Stats:

/max
/min
/mean

Distribution in Freesound

_images/rhythm.second_peak_weight.mean.png

rhythm.bpm

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/rhythm/bpm

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_RhythmExtractor2013.html
_images/rhythm.bpm.png

rhythm.bpm_intervals

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/rhythm/bpm_intervals

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_RhythmExtractor2013.html

rhythm.onset_count

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/rhythm/onset_count

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_OnsetRate.html
_images/rhythm.onset_count.png

rhythm.second_peak_spread

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/rhythm/second_peak_spread

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_BpmHistogramDescriptors.html

Stats:

/max
/min
/mean

Distribution in Freesound

_images/rhythm.second_peak_spread.mean.png

rhythm.beats_loudness_band_ratio

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/rhythm/beats_loudness_band_ratio

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_BeatsLoudness.html

Stats:

/min
/max
/dvar2
/dmean2
/dmean
/var
/dvar
/mean

Distribution in Freesound

_images/rhythm.beats_loudness_band_ratio.mean.000.png _images/rhythm.beats_loudness_band_ratio.mean.001.png _images/rhythm.beats_loudness_band_ratio.mean.002.png _images/rhythm.beats_loudness_band_ratio.mean.003.png _images/rhythm.beats_loudness_band_ratio.mean.004.png _images/rhythm.beats_loudness_band_ratio.mean.005.png

rhythm.second_peak_bpm

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/rhythm/second_peak_bpm

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_BpmHistogramDescriptors.html

Stats:

/max
/min
/mean

Distribution in Freesound

_images/rhythm.second_peak_bpm.mean.png

rhythm.onset_rate

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/rhythm/onset_rate

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_OnsetDetection.html

rhythm.beats_position

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/rhythm/beats_position

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_RhythmExtractor2013.html

rhythm.first_peak_weight

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/rhythm/first_peak_weight

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_BpmHistogramDescriptors.html

Stats:

/max
/min
/mean

Distribution in Freesound

_images/rhythm.first_peak_weight.mean.png

Tonal Descriptors

tonal.hpcp_entropy

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/tonal/hpcp_entropy

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_Entropy.html

Stats:

/min
/max
/dvar2
/dmean2
/dmean
/var
/dvar
/mean

Distribution in Freesound

_images/tonal.hpcp_entropy.mean.png

tonal.chords_scale

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/tonal/chords_scale

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_ChordsDescriptors.html

tonal.chords_number_rate

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/tonal/chords_number_rate

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_ChordsDescriptors.html
_images/tonal.chords_number_rate.png

tonal.key_strength

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/tonal/key_strength

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_Key.html
_images/tonal.key_strength.png

tonal.chords_progression

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/tonal/chords_progression

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_ChordsDetection.html

tonal.key_scale

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/tonal/key_scale

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_Key.html

tonal.chords_strength

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/tonal/chords_strength

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_ChordsDetection.html

Stats:

/min
/max
/dvar2
/dmean2
/dmean
/var
/dvar
/mean

Distribution in Freesound

_images/tonal.chords_strength.mean.png

tonal.key_key

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/tonal/key_key

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_Key.html

tonal.chords_changes_rate

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/tonal/chords_changes_rate

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_ChordsDescriptors.html
_images/tonal.chords_changes_rate.png

tonal.chords_count

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/tonal/chords_count

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_ChordsDescriptors.html
_images/tonal.chords_count.png

tonal.hpcp_crest

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/tonal/hpcp_crest

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_Crest.html

Stats:

/min
/max
/dvar2
/dmean2
/dmean
/var
/dvar
/mean

Distribution in Freesound

_images/tonal.hpcp_crest.mean.png

tonal.chords_histogram

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/tonal/chords_histogram

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_ChordsDescriptors.html

tonal.chords_key

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/tonal/chords_key

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_ChordsDescriptors.html

tonal.tuning_frequency

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/tonal/tuning_frequency

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_TuningFrequency.html

Stats:

/min
/max
/dvar2
/dmean2
/dmean
/var
/dvar
/mean

Distribution in Freesound

_images/tonal.tuning_frequency.mean.png

tonal.hpcp_peak_count

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/tonal/hpcp_peak_count

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_PeakDetection.html
_images/tonal.hpcp_peak_count.png

tonal.hpcp

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/tonal/hpcp

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_HPCP.html

Stats:

/min
/max
/dvar2
/dmean2
/dmean
/var
/dvar
/mean

Distribution in Freesound

_images/tonal.hpcp.mean.000.png _images/tonal.hpcp.mean.001.png _images/tonal.hpcp.mean.002.png _images/tonal.hpcp.mean.003.png _images/tonal.hpcp.mean.004.png _images/tonal.hpcp.mean.005.png _images/tonal.hpcp.mean.006.png _images/tonal.hpcp.mean.007.png _images/tonal.hpcp.mean.008.png _images/tonal.hpcp.mean.009.png _images/tonal.hpcp.mean.010.png _images/tonal.hpcp.mean.011.png _images/tonal.hpcp.mean.012.png _images/tonal.hpcp.mean.013.png _images/tonal.hpcp.mean.014.png _images/tonal.hpcp.mean.015.png _images/tonal.hpcp.mean.016.png _images/tonal.hpcp.mean.017.png _images/tonal.hpcp.mean.018.png _images/tonal.hpcp.mean.019.png _images/tonal.hpcp.mean.020.png _images/tonal.hpcp.mean.021.png _images/tonal.hpcp.mean.022.png _images/tonal.hpcp.mean.023.png _images/tonal.hpcp.mean.024.png _images/tonal.hpcp.mean.025.png _images/tonal.hpcp.mean.026.png _images/tonal.hpcp.mean.027.png _images/tonal.hpcp.mean.028.png _images/tonal.hpcp.mean.029.png _images/tonal.hpcp.mean.030.png _images/tonal.hpcp.mean.031.png _images/tonal.hpcp.mean.032.png _images/tonal.hpcp.mean.033.png _images/tonal.hpcp.mean.034.png _images/tonal.hpcp.mean.035.png

Sfx Descriptors

sfx.temporal_decrease

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/sfx/temporal_decrease

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_Decrease.html

Stats:

/max
/min
/mean

Distribution in Freesound

_images/sfx.temporal_decrease.mean.png

sfx.inharmonicity

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/sfx/inharmonicity

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_ Inharmonicity.html

Stats:

/min
/max
/dvar2
/dmean2
/dmean
/var
/dvar
/mean

Distribution in Freesound

_images/sfx.inharmonicity.mean.png

sfx.pitch_min_to_total

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/sfx/pitch_min_to_total

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_MinToTotal.html
_images/sfx.pitch_min_to_total.png

sfx.tc_to_total

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/sfx/tc_to_total

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_TCToTotal.html
_images/sfx.tc_to_total.png

sfx.der_av_after_max

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/sfx/der_av_after_max

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_DerivativeSFX.html

Stats:

/max
/min
/mean

Distribution in Freesound

_images/sfx.der_av_after_max.mean.png

sfx.pitch_max_to_total

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/sfx/pitch_max_to_total

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_MaxToTotal.html
_images/sfx.pitch_max_to_total.png

sfx.temporal_spread

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/sfx/temporal_spread

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_CentralMoments.html

Stats:

/max
/min
/mean

Distribution in Freesound

_images/sfx.temporal_spread.mean.png

sfx.temporal_kurtosis

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/sfx/temporal_kurtosis

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_CentralMoments.html

Stats:

/max
/min
/mean

Distribution in Freesound

_images/sfx.temporal_kurtosis.mean.png

sfx.logattacktime

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/sfx/logattacktime

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_LogAttackTime.html

Stats:

/max
/min
/mean

Distribution in Freesound

_images/sfx.logattacktime.mean.png

sfx.temporal_centroid

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/sfx/temporal_centroid

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_Centroid.html

Stats:

/max
/min
/mean

Distribution in Freesound

_images/sfx.temporal_centroid.mean.png

sfx.tristimulus

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/sfx/tristimulus

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_ Tristimulus.html

Stats:

/min
/max
/dvar2
/dmean2
/dmean
/var
/dvar
/mean

Distribution in Freesound

_images/sfx.tristimulus.mean.000.png _images/sfx.tristimulus.mean.001.png _images/sfx.tristimulus.mean.002.png

sfx.max_der_before_max

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/sfx/max_der_before_max

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_DerivativeSFX.html

Stats:

/max
/min
/mean

Distribution in Freesound

_images/sfx.max_der_before_max.mean.png

sfx.strongdecay

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/sfx/strongdecay

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_StrongDecay.html
_images/sfx.strongdecay.png

sfx.pitch_centroid

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/sfx/pitch_centroid

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_Centroid.html

Stats:

/max
/min
/mean

Distribution in Freesound

_images/sfx.pitch_centroid.mean.png

sfx.duration

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/sfx/duration

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_ Duration.html
_images/sfx.duration.png

sfx.temporal_skewness

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/sfx/temporal_skewness

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_CentralMoments.html

Stats:

/max
/min
/mean

Distribution in Freesound

_images/sfx.temporal_skewness.mean.png

sfx.effective_duration

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/sfx/effective_duration

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_EffectiveDuration.html

Stats:

/max
/min
/mean

Distribution in Freesound

_images/sfx.effective_duration.mean.png

sfx.max_to_total

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/sfx/max_to_total

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_MaxToTotal.html
_images/sfx.max_to_total.png

sfx.oddtoevenharmonicenergyratio

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/sfx/oddtoevenharmonicenergyratio

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_ OddToEvenHarmonicEnergyRatio.html

Stats:

/dmean2
/dmean
/mean
/max
/min

Distribution in Freesound

_images/sfx.oddtoevenharmonicenergyratio.mean.png

sfx.pitch_after_max_to_before_max_energy_ratio

curl http://www.freesound.org/api/sounds/<sound_id>/analysis/sfx/pitch_after_max_to_before_max_energy_ratio

Essentia Algorithm

http://essentia.upf.edu/documentation/reference/streaming_AfterMaxToBeforeMaxEnergyRatio.html
_images/sfx.pitch_after_max_to_before_max_energy_ratio.png