cheb2ap(N, rs)
The returned filter prototype has :None:None:`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
.
Return (z,p,k) for Nth-order Chebyshev type I analog lowpass filter.
cheby2
Filter design function using this prototype
The following pages refer to to this document either explicitly or contain code examples using this.
scipy.signal._filter_design.cheby2
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