How can I apply a designed Low pass filter on an audio file ?

i have a designed Low pass filter

i want to apply this low pass filter on an audio file

How can i do ?

i only know that i can use [y,Fs] = audioread('XXX.wav');

Answer 1

[Ameer Hamza]

You can use Control system approach to filter this signal as follow

[data, fs] = audioread('sample.wav');
T = 1/fs;
t = (0:size(data,1)-1)'*T; % get time of samples;

filter = tf(18181818, [1 9090.9090909090 18181818.181818]);
channel1_filtered = lsim(filter, data(:,1), t);
channel2_filtered = lsim(filter, data(:,2), t);