How to remove noise from wav file? [duplicate]

Question

This question already has an answer here:

• Suppressing noise in wav files 1 answer

I am actually mixing two wav files using the simple equation (a+b)/2 where a and b are the samples from the two wav files.This is fine and I am able to listen the audio from both files at the same time. But the problem is there is a lot of hssss noise (similar like the radio) playing in the background,how can I get rid of this white noise/noise.

Answer 1

You can create a low pass filter to remove the noise.

How to implement low pass filter using java

Please look into this link too http://www.dsprelated.com/showcode/256.php