Features¶

Accentuation features¶

`accentuation_feature`(signal, fs[, sum_flag, …])	Compute accentuation feature from audio signal.
`feature_normalization`(feature, time, beats)	Local amplitude normalization of the feature signal.
`feature_time_quantize`(feature, time, tatums)	Time quantization of the feature signal to a tatum grid.

feature_map(feature, time, beats, downbeats) Compute feature map from accentuation feature signal.

`spectrogram`(signal, fs[, window_length, …])	Calculates the Short-Time Fourier Transform a signal.
`melSpectrogram`(in_spec, in_time, in_freq[, …])	This function converts a Spectrogram with linearly spaced frequency components to the Mel scale.

`generate_tatum_grid`(beats, downbeats, n_tatums)	Generate tatum temporal grid from time instants of the tactus beats.
`halfWaveRectification`(in_signal)	Half-wave rectifies features.
`calculateDelta`(in_signal[, delta_filter_length])	This function calculates the delta coefficients of a given feature.
`sumFeatures`(in_signal)	This function sums all features along frames.