eelbrain.Butterworth

class eelbrain.Butterworth(low, high, order, sfreq=None)

Butterworth filter

Parameters:

low : scalar

Low cutoff frequency.

high : scalar | None

High cutoff frequency.

order : int

Filter order.

sfreq : scalar

Downsample filtered signal to this sampling frequency.

Notes

Uses scipy.signal.butter().

Methods

filter(self, ndvar)	Filter an NDVar
filtfilt(self, ndvar)	Forward-backward filter an NDVar