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(ndvar)

Filter an NDVar

filtfilt(ndvar)

Forward-backward filter an NDVar