freqtr.asv

FIR filter design with unseperable window, seperable window, frequency sampling method

b = firpm(8,[0 0.1 0.3 0.41]*2,[1 1 0 0]);
[H,w] = freqz(b,1,64,'whole');
colormap(jet(64))
plot(w/pi-1,fftshift(abs(H)))


h = ftrans2(b);
*freqz2(h)