ex_06_04_1.m

来自「清华大学胡广书教授< 数字信号处理理论算法实现>>第二版一书的」· M 代码 · 共 14 行

%  ex_06_04_1.m :  习题 6.4
clear;

fp=[44 56];
fs=[47 53];
rp=3;
rs=50;
Fs=1000;
wp=2*fp/Fs;ws=2*fs/Fs;
[n,wn]=cheb1ord(wp,ws,rp,rs);
[b,a]=cheby1(n,rp,wn,'stop')
[h,w]=freqz(b,a,256,Fs);
h=20*log10(abs(h));
plot(w,h);grid;