cupyx.scipy.signal.sos2zpk#

cupyx.scipy.signal.sos2zpk(sos)[source]#

Return zeros, poles, and gain of a series of second-order sections

Parameters:

sos (array_like) – Array of second-order filter coefficients, must have shape (n_sections, 6). See sosfilt for the SOS filter format specification.

Returns:

z (ndarray) – Zeros of the transfer function.
p (ndarray) – Poles of the transfer function.
k (float) – System gain.

Notes

The number of zeros and poles returned will be n_sections * 2 even if some of these are (effectively) zero.