Utilities

Convert

power_to_db(X[, min_db])	Convert power spectrogram to relative decibel(dB) spectrogram.
power_to_abs_db(X[, fft_length, is_norm, min_db])	Convert power spectrogram to absolute decibel(dB) spectrogram
mag_to_abs_db(X[, fft_length, is_norm, min_db])	Convert magnitude spectrogram to absolute decibel(dB) spectrogram
log_compress(X[, gamma])	log compression
log10_compress(X[, gamma])	log10 compression
delta(X[, order])	Compute delta features
get_phase(D)	Extract phase data from a complex-valued spectrogram D.

Filter

auditory_weight_a(fre_arr)	Compute the weight-a of a set of frequencies.
auditory_weight_b(fre_arr)	Compute the weight-b of a set of frequencies.
auditory_weight_c(fre_arr)	Compute the weight-c of a set of frequencies.
auditory_weight_d(fre_arr)	Compute the weight-d of a set of frequencies.

Scale

min_max_scale(X)	min max scale
stand_scale(X[, tp])	stand scale
max_abs_scale(X)	max abs scale
robust_scale(X)	robust scale
center_scale(X)	center scale
mean_scale(X)	mean scale
arctan_scale(X)	arctan scale

Audio

read(path)	Load an audio file as a NumPy array of floats.
write(path, data[, samplate, subtype, format])	Write audio data from a NumPy array to the file.
chirp(fmin, fmax, duration[, samplate, phi, ...])	chirp signal
WaveReader(file_path)	Wave Reader
WaveWriter(file_path[, samplate, bit, ...])	Wave Writer

Utils

note_to_midi(note)	Convert note to MIDI number.
note_to_hz(note)	Convert note to the frequency (Hz).
midi_to_note(midi[, is_octave])	Convert MIDI number to note.
midi_to_hz(midi)	Convert MIDI number to the frequency (Hz).
hz_to_note(frequencies)	Convert the frequency (Hz) to note.
hz_to_midi(frequencies)	Convert the frequency (Hz) to MIDI number.

Sample

sample_path(name)

Get sample path