Removing noise from a wav signal in matlab

[der14]

In matlab I have taken in a wav signal of my voice using the wavread function.
But from this voice signal I need only those samples whose values(amplitude) is greater than say 0.05 ,so that noise is not taken. I then have to show the signal without noise using the functions subplot and then stem.
Please can someone give me the code to do this in matlab.

 

[milind.a.kulkarni]

I think 0.05 is your threshold... Now in this case is this is the threshold is in analog voice recording side or in digital data processing side.... If it is on digital side the you can use simple if else for this threshold based approach ..... But way that noise filtering is done in digital side using designing proper digital filter for proper frequency response..

Good luck