I want the background noise!

I have a recording of a conference call I have to transcribe. Unfortunately the recorder was placed near a noisy co-worker, who has become the main sound during the recording. Is there some way to pull out and enhance what is now the background noise, my important call?

If you want to <strong>keep</strong> the background noise and discard the main signal, you have a very difficult problem (unless the two speakers have very different vocal ranges). When it comes to separating mixed signals, human beings are generally much better at the task than computers. <br /> <br /> The computation in general is called <a href="http://en.wikipedia.org/wiki/Blind_signal_separation">blind source separation</a> or the <a href="http://en.wikipedia.org/wiki/Cocktail_party_problem">cocktail party problem</a>. Your particular version of it is called monaural speech segregation. Perhaps a graduate student who works in this field could run your data through an experimental program?<br />
Re-design8 years ago
Go to this <a href="http://www.songsurgeon.com/">link and download this trial software</a>. It's called song surgeon. It's supposed to be able to remove the vocal from music. It's adjustable so you may be able to get it to take out the "offender" and atleast make what you want to hear better.<br />
lemonie8 years ago
You need to filter this and Burf has given you a good answer, I second that.

Burf8 years ago
If you have Audacity you can use it to filter out some of the noise, but how much is only a guess. If you don't have it and want to give it a try, you can download it here:<br /> http://audacity.sourceforge.net/<br />