- cupyx.scipy.signal.ellipap(N, rp, rs)#
Return (z,p,k) of Nth-order elliptic analog lowpass filter.
The filter is a normalized prototype that has rp decibels of ripple in the passband and a stopband rs decibels down.
The filter’s angular (e.g., rad/s) cutoff frequency is normalized to 1, defined as the point at which the gain first drops below
Filter design function using this prototype