MATLAB program for the design and implementation of Chebyshev low pass filter

Program code

%Chebyshev low pass filter

clc;

clear all;

close all;

fp=input('Please enter the pass band frequency: ');

fs=input('Please enter the stop band frequency: ');

rp=input('Please enter the pass band attenuation: ');

rs=input('Please enter the stop band attenuation: ');

sf=input('Please enter the sampling frequency: ');

wp=2*fp/sf;

ws=2*fs/sf;

[n,wn]=cheb1ord(wp,ws,rp,rs);

[b,a]=cheby1(n,rp,wn,'low');

freqz(b,a);

title('Chebyshev low pass filter');

Example of output

Please enter the pass band frequency: 2000

Please enter the stop band frequency: 1600

Please enter the pass band attenuation: .4

Please enter the stop band attenuation: 50

Please enter the sampling frequency: 8000 

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