ideal_lp.m

来自「the file contain many matlab signal sour」· M 代码 · 共 12 行

function hd=ideal_lp(wc,M);
% Ideal Lowpass filter computation 
% ---------------------
% [hd]=ideal_lp(wc,M)
% hd=ideal impulse response between 0 to M-1
% wc=cutoff frequency in radians
% M=length of the ideal filter
%
alpha=(M-1)/2;
n=[0:(M-1)];
m=n-alpha+eps;
hd=sin(wc*m)./(pi*m);