pygsti.extras.drift.signal.lowpass_filter

Contents

pygsti.extras.drift.signal.lowpass_filter#

lowpass_filter(data, max_freq=None)#

Implements a low-pass filter on the input array, by DCTing the input, mapping all but the lowest max_freq modes to zero, and then inverting the transform.

Parameters:

  • data (numpy.array,) – The vector to low-pass filter

  • max_freq (None or int, optional) – The highest frequency to keep. If None then it keeps the minimum of 50 or l/10 frequencies, where l is the length of the data vector

Returns:

The low-pass-filtered data.

Return type:

numpy.array

Contents