ms5r23.m

《数字信号处理实验(MATLAB版)》这

n=-3:4*pi;
x=sin(n/2);
h=0.5.^n;
[y,ny]=convnew(x,n,h,n);               %卷积运算
subplot(2,2,1);stem(n,x,'filled','k');            
title('f1(n)');
subplot(2,2,2);stem(n,h,'filled','k');
title('f2(n)');
subplot(2,1,2);stem(ny,y,'filled','k');
title('y(n)');