remove the noise from an audio signal

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enas
enas 2014-4-3
Iam using this code
rec1 = audiorecorder(8000, 16, 2);
disp('Start speaking.')
recordblocking(rec1, 2);
disp('End of Recording.');
play(rec1);
y= getaudiodata(rec1);
x2=y(:,1);
and I want to filter out the noise using ellipord filter (or any other suggestion) to apply the filter I need to find a & b and those depends on ws & wp which I dont know how to find or identify them , I've already read the help in matlab but it didnt help that much

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