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Old 06-19-2007, 10:26 AM
Tim R. Tim R. is offline
Join Date: Oct 1999
Posts: 1,145
Default Negative \"User offset\" ADC numbers possible?

On Apogee's website it says that Digi doesn't support negative compensation (and that the only way to compensate negatively is to nudge), but in the PT's manual it states that you CAN enter a negative number in the User offset. I've found though, that entering a negative number does NOTHING to compensate.

Anyone know what the deal is with negative user offset numbers?

I'm trying to compensate for the Rosetta 800's analog I/O delay (which I've found to be 63 samples in my case).

Tim Reisig
Main System: Pro Tools Ultimate 23.12, HD Native TB, HD OMNI, S3/Artist Transport/Eucontrol 22.20, Apogee Rosetta 800 w/XHD card, Avid 96 I/O
Mac OS 13.2.1, 2018 Mac Mini 3Ghz i5, 32Gig RAM

System 2: Pro Tools 23.9 (no Hardware), Mac OS 13.2.1, MBP (Macbook Air M2, 2022 24Gig Ram)
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Old 06-19-2007, 03:14 PM
Stig Eliassen's Avatar
Stig Eliassen Stig Eliassen is offline
Join Date: Jan 2005
Location: Norway @ Studio Varmt & Trangt
Posts: 7,455
Default Re: Negative \"User offset\" ADC numbers possible?

If you've made the Rosetta an insert in the I/O setup, you can type in a H/W insert delay. I believe you must use milliseconds, so it's 63 samples/ 44.1 ~ 1.43 ms of delay.

I don't think the session sample rate affects the delay of external devices, but I almost blew a fuse in my brain thinking about it.

Studio rig - Pro Tools|HDX 2018.7 | Logic Pro X.4.2 | Avid HD I/O (8x8x8) | 6-core 3.33 Westmere w/24GB RAM | OS 10.12.3 | D-Command ES | Eleven Rack | Vienna Ensemble Pro 5
Mobile rig - Macbook Pro i7 w/16GB RAM | UA Apollo 8p | Pro Tools|HD 2018.3 | Logic Pro X.4.2 | OS 10.12.6
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