Speed of a drum track MP3

[mister bunko]

Ok.

1. Friend 500 miles away records drums over my MP3.

2. Drummer sends mp3 of drum track to me via DivShare.

3. Drums are now about a measure ahead by the end of the song now. He sends the MP3 of his performance WITH my track and it's perfect.

4. Drummer previously emailed a drum track and it synched perfectly.

What's happening to the file?​

 

[DrewPeterson7]

Interesting. Are you and he using the same recording program? My guess is no, and that there are slight differences in internal time code in play here. He opened your project at, oh, 120bpm, whereas you'd actually recorded it at like 119.6 or something, and the program he used simply sped up the file. Or, vice versa...

Either way, Reaper (and I'm posting this from my work computer and I've never tried this, so bear with me) lets you adjust the number of beats per wave file for loops, so it's worth a try to open it as a loop and then manually adjust the number of beats until it syncs up perfectly. Alternately, theres a "play back file as % of original speed" field or something too - if that's not 1.0000, then try setting it to 1 (or maybe it's 100%, again, I don't have it in front of me) and that might do the trick.

 

[Rokket]

It's possible that the mp3 encoding messed with your tracks too. I'd send it to him as a .wav file and see if it happens again.

But like Drew said, it's possible that the recording medium he used doesn't sync up with yours. There may be just enough latency at the beginning of the tracks that it throws it off by the end. Try bumping the drums back a hair and see if you can fix it that way.