scipy.signal.
sos2zpk#
- scipy.signal.sos2zpk(sos)[source]#
- Return zeros, poles, and gain of a series of second-order sections - Parameters:
- sosarray_like
- Array of second-order filter coefficients, must have shape - (n_sections, 6). See- sosfiltfor the SOS filter format specification.
 
- Returns:
- zndarray
- Zeros of the transfer function. 
- pndarray
- Poles of the transfer function. 
- kfloat
- System gain. 
 
 - Notes - The number of zeros and poles returned will be - n_sections * 2even if some of these are (effectively) zero.- Added in version 0.16.0.