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Old 11-30-2021, 09:04 PM
mennis04 mennis04 is offline
Join Date: Sep 2020
Location: USA
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Default h/w insert delay compensation not correct

I followed the instructions for determining the h/w insert delay from pro tools reference guide. Delay compensation on. Create two tracks, a tone on track 1, HW insert on track 1.Bus the output of track 1 to track 2. But when I record a tone to track 2, track 2 is ahead of track 1. Shouldn't it be behind? I'm sure I'm missing something.
Mac mini (2018)
3.2 GHz 6-Core Intel Core i7
macOS Catalina version 10.15.7
Pro Tools version 2021.10.0
UA Apollo x8
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Old 11-30-2021, 11:22 PM
Darryl Ramm Darryl Ramm is offline
Join Date: Nov 2010
Location: USA
Posts: 15,500
Default Re: h/w insert delay compensation not correct

Hi, welcome to DUC.

Sounds like you have an incorrect value set for the insert delay. Or just try turning delay comp off and see what you get then.

Do all this in a totally empty new session. No plugins nothing else just two mono tracks. And no the track you are playing into from the prerecorded track can't be ahead of the prerecorded track, causality and all that.

You should have already tried trashing prefs, always start troubleshooting with that. See "help us help you" up the top of each web page.

Still stuck, give more info...

Screenshots of your measurement tracks showing the insert and I/O selectors.
Screenshots of the Setup>IO>HW Insert Delay page
Does the outboard box work at all for you?
What latency/difference are you measuring?
What is the hardware delay set to?
What exact interface? brand/model.
What I/O ports are you connecting the outboard box to?
What exact outboard effects box? brand/model.
What do you measure if you use a straight through cable instead of an outboard box?

Last edited by Darryl Ramm; 12-01-2021 at 12:51 AM.
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Old 11-30-2021, 11:33 PM
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Top Jimmy Top Jimmy is offline
Join Date: Oct 2005
Location: Spokane, WA
Posts: 5,644
Default Re: h/w insert delay compensation not correct

If you're using the H/W Insert Delay settings, understand that Pro Tools already automatically compensates for the I/O delay of your interface. IOW, if your interface is set to a buffer of 256, Pro Tools will already account for the 512 samples of round-trip delay (plus the converter delay if your interface reports it). The purpose for the H/W Insert Delay setting is to account for any delay incurred in the outboard gear the signal passes through.
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Old 12-01-2021, 07:30 AM
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albee1952 albee1952 is online now
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Default Re: h/w insert delay compensation not correct

Knowing exactly what interface and what hardware is in play might help the conversation
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