Avid Pro Audio Community

Avid Pro Audio Community

How to Join & Post  •  Community Terms of Use  •  Help Us Help You

Knowledge Base Search  •  Community Search  •  Learn & Support


Avid Home Page

Go Back   Avid Pro Audio Community > Pro Tools Software > macOS

Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 05-25-2024, 12:15 AM
skylab001 skylab001 is offline
Member
 
Join Date: Nov 2003
Location: The Foothills of Socal
Posts: 231
Default HDX Delay Compensation and Aux tracks

I’ve noticed when in standard HDX mode when recording a live input that signals sent to Aux tracks are not perfectly aligned with delay compensation. Let’s say I’m recording a guitar and have an FX send bussed to an Aux track with an echo on it(I’ve used both soundtoys native or Mcdsp native & aax DSP), and the echo is a synced 1/8th note. The echo will not be in time while input monitored during recording, but when I switch off live input and playback the track, it syncs up. I’ve found I need to turn off delay compensation on the aux track while the track is input monitored for it to sync while recording. This seems like it should happen automatically. Is there something I’m doing wrong or is this “just the way it is”?
Reply With Quote
  #2  
Old 05-25-2024, 08:08 AM
devinemke's Avatar
devinemke devinemke is offline
Member
 
Join Date: Sep 2018
Location: NYC
Posts: 164
Default Re: HDX Delay Compensation and Aux tracks

I am having what I think is the same/similar issue. In my case I am doing large Post mixes for Film/TV and and have an imported video file with it's embedded audio. My mix is routed through a series of auxes to create 4 x 5.1 stems, then headed to 4 x 5.1 stem print tracks, then to a composite 5.1 print master track. When all the print tracks are in input (while mixing) the summed audio is out of sync with the video embedded audio (which is headed directly out of the session monitor path) but when playing back (printed) everything is perfectly in sync. I thought the ADC engine would accurately compensate for this.

My rig: Pro Tools HDX (3 cards) 2024.3.1 Ultimate running a Mac Pro 2019 macOS 13.6.6
__________________
Devin Emke
Audio Post Production
Saturday Night Live, NBC
Reply With Quote
  #3  
Old 05-25-2024, 02:13 PM
BScout BScout is offline
Member
 
Join Date: Mar 2007
Location: Los Angeles, CA
Posts: 4,250
Default Re: HDX Delay Compensation and Aux tracks

Quote:
Originally Posted by skylab001 View Post
I’ve noticed when in standard HDX mode when recording a live input that signals sent to Aux tracks are not perfectly aligned with delay compensation. Let’s say I’m recording a guitar and have an FX send bussed to an Aux track with an echo on it(I’ve used both soundtoys native or Mcdsp native & aax DSP), and the echo is a synced 1/8th note. The echo will not be in time while input monitored during recording, but when I switch off live input and playback the track, it syncs up. I’ve found I need to turn off delay compensation on the aux track while the track is input monitored for it to sync while recording. This seems like it should happen automatically. Is there something I’m doing wrong or is this “just the way it is”?
It is operating the correct way (and the way it has always worked.) The point is the least amount of delay for the player. If it was delay compensating the input/record track, it would add latency. So while input monitored or in record, that track does not delay compensate.

If you want to work against this, you can put "auto delay comp" into blue mode (right click the lower delay comp box on the Mix window for the track and you will get this option.)
__________________
Pro Tools Ult 2024.3.1, HDX 2, MTRX/SPQ, RME BBF Pro + MADIface ProS1 x 2, Fire Max11 x 2, Dock, iPad Air5 Mac Mini 14,12, 12 core, macOS 13.6.7RAM 32GB, SSD 4TB, GPU 19 coreQNAP TVS-872XT 148TB TB3
Reply With Quote
  #4  
Old 05-25-2024, 02:17 PM
BScout BScout is offline
Member
 
Join Date: Mar 2007
Location: Los Angeles, CA
Posts: 4,250
Default Re: HDX Delay Compensation and Aux tracks

Quote:
Originally Posted by devinemke View Post
I am having what I think is the same/similar issue. In my case I am doing large Post mixes for Film/TV and and have an imported video file with it's embedded audio. My mix is routed through a series of auxes to create 4 x 5.1 stems, then headed to 4 x 5.1 stem print tracks, then to a composite 5.1 print master track. When all the print tracks are in input (while mixing) the summed audio is out of sync with the video embedded audio (which is headed directly out of the session monitor path) but when playing back (printed) everything is perfectly in sync. I thought the ADC engine would accurately compensate for this.

My rig: Pro Tools HDX (3 cards) 2024.3.1 Ultimate running a Mac Pro 2019 macOS 13.6.6
You need to put those tracks into blue mode. Blue mode was specifically created for post-production people who need stem and full mix tracks to always align (where there's no issue with delay because you aren't recording an instrumentalist live.)
This is not a fault -- things are working correctly.
__________________
Pro Tools Ult 2024.3.1, HDX 2, MTRX/SPQ, RME BBF Pro + MADIface ProS1 x 2, Fire Max11 x 2, Dock, iPad Air5 Mac Mini 14,12, 12 core, macOS 13.6.7RAM 32GB, SSD 4TB, GPU 19 coreQNAP TVS-872XT 148TB TB3
Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Delay Compensation on AUX tracks - automatic mesaone Pro Tools 11 12 07-21-2020 05:29 PM
tracks flambing - delay compensation? ByronC Pro Tools 11 6 12-10-2017 08:49 PM
Instrument Tracks Delay Compensation Bug migueldgoncalves Pro Tools 12 5 06-29-2017 08:42 AM
Delay compensation and Aux Tracks Terry Wetzel Windows 10 04-08-2012 07:19 AM
Pro Tools 9 Delay and Delay Compensation on Aux Tracks and Bussing CNSound macOS 1 01-27-2012 11:10 AM


All times are GMT -7. The time now is 06:10 PM.


Powered by: vBulletin, Copyright ©2000 - 2008, Jelsoft Enterprises Limited. Forum Hosted By: URLJet.com