Interleaved stereo file, with built in offset...

I'm not necessarily looking for an answer to what just happened here, but it's worth documenting in these forums.


I often record acoustic guitar into a stereo interleaved file. Today, this happened. I punched in, played a section of the song, and when I went back to edit the in/out points, the right side of the interleaved signal was delayed by as much as one second, maybe more. You can see the section before this take was fine, as was the section after it.


I have never before, in recording with Logic for 16 + years, seen, or experienced this.


I also posted a few days ago about some bizarre marker naming abnormalities, as well as Logic randomly removing takes from the arrange page after recording... ALL of this has started after the update to 10.2.1


Curious if anyone has seen this before...


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Posted on Feb 25, 2016 11:38 AM

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10 replies

Feb 26, 2016 9:54 AM in response to Jim Frazier

I have testbed rigs here with OS X 10.10.5, 10.11.3 and 10.11.4b (15E49a) all running LPX 10.2.1.... and I believe I 'tested' your reported issues under all three without being able to duplicate them...


I'll need to double check the Marker one later this weekend.. under 10.10.5 as my notes aren't clear as to if I actually did that test under that OS X / LPX combination.... but certainly the "punch out' problem was one I did test on all three, again without any success at duping it....

Feb 26, 2016 10:19 AM in response to Pancenter

Pancenter... the blip was me bumping something... maybe setting my coffee mug down before the downbeat hit 🙂 If I had peeled it back, you would've seen that on the other side as well.


The levels are different intentionally. It wasn't a true stereo recording,,, just 2 mics, but favoring the one side. Regardless, it just seems so weird an interleaved file could even do that, since the left and right sides are "locked" together. Hopefully, an isolated incident.


Maybe that was Logic's way of telling me it thought I had a better take in me...!

Feb 26, 2016 1:29 PM in response to Drew Reece

Drew, the only time I could see that happening on input would be the possibility of the sample delay plugin on an input channel.


I've never been aware of a way to purposely delay input from an audio device, unless ,as you suggested, it was a global setting. But not two different settings from the same hardware.


On a separate, but similar note, my key command gremlins just decided to join in on the key command "New track with same instrument". It worked for hours (and 15 or so years) until an hour ago. Now I get the flashing screen.


I just repaired permissions.... I hadn't done that in a long time. Next course of action will probably be Nigel's suggestion creating a new admin account, and logging in from there.


Thanks all for your discussion on this. I'm always hopeful it will cause one of those "A-HA" moments... and it'll become more obvious

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Interleaved stereo file, with built in offset...

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