chroma_features(*, audio[, app, normalised])
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chroma_scape_features(*, features[, app])
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downsampler(*, features[, app])
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fourier_features(*, features[, app])
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Compute the amplitude and phase of all Fourier components using get_fourier_component.  | 
get_downsampler(n)
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none_feature(*, audio[, app])
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normaliser(*, features[, app, inplace, axis])
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spectrogram_features(*, audio[, app])
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use_chroma_features(app[, n, name, ...])
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use_chroma_scape_features(app[, name, ...])
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use_fourier_features(app[, name, ...])
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use_fourier_scape_features(app[, name, ...])
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waveform_feature(*, audio[, app, use_real_file])
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