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RE: synchronization issue with Logic 7.1- help please
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RE: synchronization issue with Logic 7.1- help please


  • Subject: RE: synchronization issue with Logic 7.1- help please
  • From: Philip Lukidis <email@hidden>
  • Date: Thu, 4 Aug 2005 14:04:01 -0400

Several days ago when I sent this we had massive internal server issues, so
I have opted to send this again, sorry if this turns our to be a double
send.

I will also ask an additional question: could skewed timestamps account for
this?  Let me say that when Logic reports bad audio/MIDI synchronization,
audio still continues to play.

If skewed timestamps could not be responsible, does anyone else know what
could be?

thanks,

Philip Lukidis

-----Original Message-----
From: Philip Lukidis
Sent: Friday, July 29, 2005 3:43 PM
To: email@hidden
Subject: synchronization issue with Logic 7.1- help please


Hello.  I'm responsible for the maintenance of a 1394 kext (top edge is
coreaudio) which I did not write.  MacOSX is not my primary environment, so
forgive me if I am asking a naive questions.

I have a problem when looping a simple project (one of the demos) in Logic
7.1.  After perhaps 45-60 min, I get a popup saying that synchronization
between MIDI and audio was lost.  Meanwhile, audio is still going on in the
background, so it would appear that my timestamps are OK (otherwise, I
thought this might be pertinent
http://lists.apple.com/archives/coreaudio-api/2002/Sep/msg00308.html).

There is nothing being sent over the MIDI at all, nor am I synchronizing off
a remote source/clock, nor is there any MIDI input.  It even occurs when I
have uninstalled my MIDI plugin, though my kext has changed considerably
since then (I will redo this test and post the results).

If anyone has a clue why this could be occurring, I'd appreciate a reply.

thanks,

Philip Lukidis
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