cheb2highpass.m

IIR滤波器的matlab实现

clc
clear
close all

%IIR
%lowpass
fs=1000;%Sample frequence
fpass=150;%pass frequence
fstop=40;%stop frequence
Wp = fpass/(0.5*fs); Ws = fstop/(0.5*fs);
Rp = 3; Rs = 60;
[n,Wn] = cheb2ord(Wp,Ws,Rp,Rs)
[b,a]= cheby2(n,Rp,Wn,'high');
freqz(b,a,512,fs); title('Chebyshev Type II Highpass');