Audacity Forum

But I guess you already gave me the reason: I'm working with mp3 You can stop now. You can't do phase cancellation from MP3 and once you make one, the damage is permanent. You can't convert an MP3 to anything else. That's the reason we recommend very strongly not to use MP3 anywhere in a production...

Time and date only works on a clean, fresh recording.

If you lose the AUP file on an edited show, the time and date stamps stop working and that's the end of the show.

Koz

Do you have "live" Time Machine? If you have a constantly operating Time Machine backup, I think it will try to do a ten minute backup and you might be able to use that to get a slightly older AUP file back. That's the tiny clock in the desktop top menu bar. I don't do that. I do a weekly ...

You and I have an additional curse. Mac OS-X is based on the Linux operating system which doesn't do File Deletion UNDO very well, or sometimes at all. So accidentally deleted work tends to stay deleted.

Koz

in which order should I import those files? That's the problem. The filenames are intentionally randomized and the only clue how they're supposed to go is each individual time and date stamp. Even if you do get those right, the Left/Right sound channel alternation may get scrambled. A reading from ...

This is another posting who has a cousin problem. http://forum.audacityteam.org/viewtopic.php?f=46&t=95111 She has a valuable interview with a Skype echo on the voices. It says here, you should be able to use phase inversion, timing and volume to cancel or at least suppress the echo. It's been d...

If you apply the corrections either side of perfect as you have, I would expect at least the first quarter of the song to be approaching success or show signs you're on the right track. Cancellation can be affected by both phase (timing) and volume. If whomever made the second track decided to chang...

I thought dragon-drop was one of the known problems in 2.1.2.

Koz

I think that's all we got. Also, you're guessing what they did between the two versions, right? Cancellation is tricky. There's pages and pages if reasons for it to fail. If anybody used MP3 or any other compressed sound anywhere in the process, you're dead. If they took an analog step in production...

I would try Effect > Change Speed anyway. That tool has a place to post the old and new times and it will try to resolve them.

Koz