ex07011.m

数字信号处理（机械工业出版社）的源码

% Chapter 7: Example 7.11 filter design
%
Wp = [60 200]/500; Ws = [50 250]/500; Rp = 3; Rs = 40;
[n,Wn] = cheb1ord(Wp,Ws,Rp,Rs)
[b,a] = cheby1(n,Rp,Wn);
freqz(b,a,512,1000); title('n=7 Chebyshev Type I Bandpass Filter')