Remove sine wave sound from wave file

Question

Basically I have one wave file that as some audio messages mixed with a loud beep, that I suspected is a sine wave sound generated. My questions are: It's possible to remove this beep, or somehow filter it using java? I already tried applying some low level and high level filters, but with no sucess...

Answer 1

A sine will be a single very specific frequency. An extremely narrow bandpass filter centered on that frequency would do a lot to mute it. Cutting it out entirely would require knowing EXACTLY what frequency it is.

What I'd do would be fire up my copy of SoundSoap, let it learn on a sample or two of the beep, and have it do all the work. But that's a commercial product.