cheb1bandpass.m

IIR滤波器的matlab实现

clc
clear
close all

%IIR
%lowpass
fs=1000;%Sample frequence
fpass=[60 200];%pass frequence
fstop=[50 250];%stop frequence
Wp = fpass/(0.5*fs); Ws = fstop/(0.5*fs);
Rp = 3; Rs = 60;
[n,Wn] = cheb1ord(Wp,Ws,Rp,Rs)
[b,a]= cheby1(n,Rp,Wn);
freqz(b,a,512,fs); title('Chebyshev Type I Bandpass');