chaudio.plugins.filters module

filters to remove frequency ranges, pass zones, bands, etc

class chaudio.plugins.filters.Butter(**kwargs)

Bases: chaudio.plugins.Basic

Butterworth filter (https://en.wikipedia.org/wiki/Butterworth_filter), the actuation function based on frequency is nearly linear (in respect to gain in dB), so there not many artifacts around the pass zone

coef(cutoff, hz, order, btype)

Internal function for getting the filter coefficients

process(_data)

Return the result, with some frequencies filtered out

“order”:Butterworth filter order, which should probably stay at 5 (the default) “cutoff”:Frequency, in hz, of the cutoff. If btype is highpass, then anything above cutoff remains in the resulting signal (i.e. the high values pass). If btype=="lowpass", all frequencies lower than cutoff remain in the signal. “btype”:What filter type? Possible values are “highpass” and “lowpass”.

__module__ = 'chaudio.plugins.filters'