Audacity Forum

Many thanks for your reply, Bill.

Yeah, I was hoping to infer this from the recording, but the difficulty is getting this exactly, which will be necessary to do the cancellation, right?

Do you think without this information it's a lost cause?

I have an audio file (one track I’m afraid) which has the same audio recorded twice with a short lag between them. This second source was recorded in error (and is identical to the first) and I’d like to strip it out. Is it possibly to programmatically (or even better automatically) duplicate the in...