45t.m

包含50个数字信号处理方面的matlab程序

clear;
clc;
wp=0.6*pi;ws=0.4*pi;Rp=0.5;Rs=60;
N=50;n=[0:1:N-1];
wc=(wp+ws)/2;
hd=ideal_lp(wc,N).*exp(j*pi*n);
w_han=(kaiser(N,5.658))';
h=hd.*w_han;
[db,mag,pha,grd,w]=freqz_m(h,1);
subplot(211);stem(n,h,'.');xlabel('n');ylabel('h(n)');
subplot(212);plot(w/pi,db);xlabel('w/pi');ylabel('pha');axis([0,1,-150,10])
grid;