ideal_hp2.m

来自「新版Matlab 7辅助信号处理技术与应用」· M 代码 · 共 11 行

function hd=ideal_hp2(Wc,N)
% compute the ideal highpass 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(pi*m)-cos(Wc*m)]./(pi*m);