features: onsets, spectral-flux and other audio features

maelzel.snd.features Module

Functions

amp2db(amp)	convert amp (0, 1) to dB
centroidbpf(samples, sr[, fftsize, overlap, ...])	Construct a bpf representing the centroid of the given audio over time
chunks(data, chunksize[, hop, padwith])	Iterate over data in chunks of chunksize.
db2amp(db)	convert dB to amplitude (0, 1)
filterOnsets(onsets, samples, sr[, ...])	Returns a selection array where a value of 1 marks an onset as relevant
findOffsets(onsets, samples, sr[, rmscurve, ...])	For each onset find its corresponding offset
numChannels(array)	Returns the number of channels represented by the given array
onsets(samples, sr[, winsize, hopsize, ...])	Detect onsets
onsetsAubio(samples, sr[, method, winsize, ...])	Detect onsets in samples
playTicks(times[, engine, chan, midinote, ...])	Given a list of times offsets, play these as ticks
plotOnsets(samples, sr, onsets[, onsetbpf, ...])	Plot the results of onsets detection
rmsbpf(samples, sr[, dt, overlap])	Return a bpf representing the rms of this sample as a function of time