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Problem with Audio Sample Rate

Problem with Audio Sample Rate

2005-03-25 by James DeMeo

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From: James DeMeo <demeo@...>
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Here's a problem I hope someone might help with.

I'm running Logic Express 7 on a good Mac G4 with plenty of memory and 
speed, and recently recorded an audio track at 48000 khz using a Mobile-Pre 
USB interface.  After recording it, I immediately played it back and all was fine.  
I made some automation edits, adding reverb, etc., and all was fine.  The file 
was saved for completion later on.

When I re-opened the file, without the Mobile-Pre USB interface, Logic 
immediately gave the message "Core Audio: Sample rate 48000 not allowed" 
-- I clicked "OK" and proceeded, but my file was then interpreted as only 
44100 khz, which stretched out the file length and both slowed and lowered 
the octave of everything.  

I then tried to re-set the Audio Sample Rate, but the same "not allowed" 
message came up again.  

I tried adjusting the Project Settings - selecting the "Convert audio file sample 
rate when importing" -- then resarted Logic, and even restarted the Mac as 
well, but this changed nothing.  

The only way I can get the file which was recorded at 48000 to display and 
playback at proper speed is to re-connect the Mobile-Pre USB interface, as if 
I'm going to record something once again.

I've searched my Logic books and the Help pdfs and can find nothing 
addressing this problem.  It seems as if Logic is always looking to "record" 
and therefore sets its speed at whatever the current interface is -- so if I do not 
connect the Mobile-Pre unit, it defaults to the "Built-In Audio" interface which 
has a maximum speed of 44100.   Is there somewhere a way to tell Logic that 
I don't want to record anything, and allow me to manually set the Audio 
Sample Rate, or to shut off the input parameters so that the Sample Rate will 
be properly adjusted at startup?  The manuals gilbly say all this should be 
automatically adjusted by Logic, but it just ain't so.

In frustration....

James

Move to quarantaine

This moves the raw source file on disk only. The archive index is not changed automatically, so you still need to run a manual refresh afterward.