I write [num,den]=invfreqz(tf(1:50001),f,3,3) to compute my num and den of my transfer function(tf). Then, from the num and den that I obtained, I compute my approximated frequency response using fvtool(num,den). But this computed frequency response does not match my measured response. I do not know what goes wrong. Can someone help me?
32.1 KB Views: 35