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24 tracks an hour long ?

Basically thats the question. Can logic handle it ? A friend asked me to mix his live gig. Oh and the dude who recorded it. Recorded it slow. About 3/4 of a step flat. He would like me to bring it back up to 440.

Posted on Feb 7, 2013 12:02 PM

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Posted on Feb 7, 2013 12:45 PM

Recorded it slow?


On a tape machine?


Are you sure it's being played back at the correct sample rate?


48kHz played back at 44.1 will be flat.


My old PPC G5 would handle 24 mono tracks no sweat so I imagine a more recent machine would have no problems.. you have a separate audio drive right?

15 replies

Feb 7, 2013 1:23 PM in response to Pancenter

Hey PC, Still waiting for the info from this guy. ( How, what format, on what, and so on ) I'm guessing a 24 track digital something. Good point though 48kHz played back at 44.1 would be flat. Wondering if it would be what my friend is describing, What he's hearing 3/4 of a whole step flat. I have a Mac Pro in one setup 4 core 2 gig ram, And I Mac Duel core 4 gig ram. I'll load the files in to both. Both have an external seagate 2 TB drive that I use for logic additional content and NI additional content. When I do receive the files, I'm thinking of loading it using 24 track multi stereo production preset. Your thoughts on that ? Also I haven't used the external drives dedicated for audio yet. Both Macs are 3/4's free. If you think I should use the ex drives. Can I do this for this one project ? And lastly, Any questions I should ask this guy before he sends this using a large file page. Aside from what format.

P.S Its a pretty cool project being handed over to me. The band is fantastic. Their doing Dark Side Of The Rainbow live with video sync. You Probably know what that is. Thanks Bill

Feb 7, 2013 4:45 PM in response to cowbell bill

Are these mono or stereo tracks, mono I'm guessing.


Make sure he's sounding you a copy of the original files as the difference in pitch is about what you would exxpect playing a 48kHz file at 44.1. You don't want files he's resaved with the pitch difference.


Personally, I would use the Mac Pro and if possible, but put more RAM in it. You want to keep long audio files off the system drive as the operating system does quite a bit of writing to sys drive. I would use an external drive with Journaling disabled.


That's many, many GB of files to downloard, good luck.

Feb 7, 2013 6:57 PM in response to cowbell bill

To get the slower playback I'm pretty sure the files were originally 48kHz. An hour long mono 48k/24-bit audio file is going to be around 525 megabytes per file.


You can download them anywhere that's convenient and then create a folder on the external drive with the name of the project and move them there, or create the folder first and download to there, that would save time.


To Disable Journaling on a drive, open Disk Utility, select the drive, hold down the Option key and mouse up to the "File" menu, you should see it there.

Feb 10, 2013 6:05 AM in response to Pancenter

Hey PC, OK it looks like they were laid down at 48K/24 bit. I went to drag the 1st track in to the project. And logic asked me if I want to change project to 48k. I said yes but it still sounds flat, Is this correct ?

Also when I went to disable journaling on the ex drive, The message was it cannot be done on this volume. I guess I can use speed and pitch to bring it up to 440 and bounce in place to relive usage ?

Feb 10, 2013 10:44 AM in response to cowbell bill

Follow this order.


1. Go to your Audio device's (Duet?) software applet, change the sample rate to 48kHz.


2. Open Logic, set the sample rate to 48k (Settings/Audio)
2a. (Go back and check the Apogee hardware to make sure you're at 48)

3. Open the Audio Bin window and import (Add Audio File) a single test file from the files you've received.


Where do you stand now?


Using the Audio bin you can multi-select files and import all at once.

Feb 11, 2013 11:27 AM in response to Pancenter

Hey PC, Thanks. OK I did what you said. Still flat. BTW Duet knows what sample rate the project is at. Pretty cool. So this guy did something to cause the files to be flat at 48K whatever. I've imported all 24 tracks and bought up time and speed 9.38 % to bring it to 440 pitch ( incase anyone wants to know for the future ) My question know is if I bounce in place all tracks will they be saved at 440 so I can turn off vari pitch ? And send the tracks back down south at 48K 440 pitch. Thanks for all your help. Bill

24 tracks an hour long ?

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