Chebyshev Type II filter prototype
Return the poles and gain of an analog Chebyshev Type II lowpass filter prototype.
cheb2ap(n, Rs)
n |
Order of the filter. |
Rs |
dB of stop-band ripple. |
This function exists for compatibility with 'Matlab' and 'Octave'only, and is
equivalent to cheby2(n, Rp, 1, "low", "s").
list of class Zpg containing poles and gain of the
filter
Carne Draug, carandraug+dev@gmail.com.
Conversion to R by Geert van Boxtel, G.J.M.vanBoxtel@gmail.com.
## 9th order Chebyshev type II low-pass analog filter zp <- cheb2ap(9, 30) w <- seq(0, 4, length.out = 128) freqs(zp, w)
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