freqsamp.m

来自「FIR filter design with unseperable windo」· M 代码 · 共 7 行

[f1,f2] = freqspace(9,'meshgrid');
Hd = ones(9);
r = sqrt(f1.^2 + f2.^2);
Hd(r>0.2) = 0;
h = fsamp2(Hd);
freqz2(h)