Logic/GarageBand m4a

When recording in either of these, (they use the same Core audio engine), what format are they using? Is it m4a? Or is the output compressed to m4a?

I believe its AIFF. It is compressed to M4A when sending it to I-tunes

read here http://documentation.apple.com/en/logicpro/usermanual/index.html#chapter=11%26section=1%26tasks=true

Logic gives you a choice of wav, aiff, and a couple others, IIRC. Not so sure about GB.

Have a look in the audio prefs or settings. It's in there somewhere!

Cheers,
Geoff

Logic and GB both record in aiff (or wav or both). You can render out from both at full or compressed quality. The cool thing about Logic is that you can render out several different formats at the same time.

As said, GB records as an AIFF. The "Share" menu (for both sending to iTunes and exporting to disk) gives you AIFF unless the "Compress" box is checked, then you can choose between MP3 and AAC (MP4/m4a). With Logic, a bounce gives you options of PCM (from which you can choose AIFF, WAV or CAF) plus MP3, M4A or CDDA.

Crisis averted.

Two things happened at the same time...I took an old scratch track in GarageBand and exported to disk. I don't usually do that and didn't know it only exports in m4a.

So I see the track as m4a and go to the Logic version of the song. Export, and it too goes to m4a. Oh *****.

So I had the same song from two different sources in a bad format. As far as I knew, the only common factor was the original files. You know that sick feeling you get when.....

Anyway, seems like months ago I was emailing that track and changed the Logic setting. Then of course, I forgot about it. And GB will export to iTunes as AIFF, just not to disk.

Thanks for the quick responses. I did hit another problem but have to make sure it's not operator error. Stay tuned.