scipy.signal.cheb2ap¶
-
scipy.signal.
cheb2ap
(N, rs)[source]¶ Return (z,p,k) for Nth-order Chebyshev type I analog lowpass filter.
The returned filter prototype has rs decibels of ripple in the stopband.
The filter’s angular (e.g. rad/s) cutoff frequency is normalized to 1, defined as the point at which the gain first reaches
-rs
.See also
cheby2
Filter design function using this prototype