42t.m

包含50个数字信号处理方面的matlab程序

Rp=3;Rs=20;
N=33;n=[0:1:N-1];
wc=pi/4;
hd=ideal_lp(wc,N);
w_han=(hanning(N))';%矩形窗w_han=(boxcar(N))'汉宁窗w_han=(hanning(N))'海明窗w_han=(hamming(N))'布莱克曼窗w_han=(blackman(N))'凯瑟窗w_han=(kaiser(N,7.865))'
h=hd.*w_han;
[db,mag,pha,grd,w]=freqz_m(h,1);
subplot(211);plot(w/pi,db);xlabel('w/pi');ylabel('db');
subplot(212);plot(w/pi,pha);xlabel('w/pi');ylabel('pha');