ideal_lp2.m

来自「matla窗口制作」· M 代码 · 共 10 行

function hd=ideal_lp2(wc,N)
%compute the ideal lowpass fiter unit pulse respondence hd(n)
%wc: cutoff frequency
%N: window length
%hd: unit pulse respondence
alpha=(N-1)/2;
n=0:1:N-1;
m=n-alpha+eps;
hd=cos(wc*m)./(pi*m);