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Utilizing Automatic Delay Compensation (ADC)

From: Pro Tools 10 Essential Training

Video: Utilizing Automatic Delay Compensation (ADC)

When you add a real-time plug-in or hardware insert to a track, it takes Pro Tools a little bit of time to process the signal. That little bit of time can cause latency or delay when playing back and recording tracks in Pro Tools. Automatic Delay Compensation or ADC, helps to manage the delays created from plug-ins and hardware inserts, and keeps all the tracks in the session time aligned. How does it work? Pro Tools adds the exact amount of delay necessary to each track, so that they all have the same amount of delay, thus keeping them all time-aligned.

Utilizing Automatic Delay Compensation (ADC)

When you add a real-time plug-in or hardware insert to a track, it takes Pro Tools a little bit of time to process the signal. That little bit of time can cause latency or delay when playing back and recording tracks in Pro Tools. Automatic Delay Compensation or ADC, helps to manage the delays created from plug-ins and hardware inserts, and keeps all the tracks in the session time aligned. How does it work? Pro Tools adds the exact amount of delay necessary to each track, so that they all have the same amount of delay, thus keeping them all time-aligned.

We can adjust the delay compensation within the playback engine, if we go to Setup > Playback Engine. We can see right here Delay Compensation Engine. We can choose from four different values. The Short ADC value uses less processing power than longer ADC values, and should be find for any session that only has a few plug-ins on it and that don't induce much delay. Note that the number of samples per channel of delay shown here depends on the session's sample rate.

At higher sampling rates, the number of samples of delay will be larger. But the same amount of delay compensation from the time perspective will be applied regardless of the sampling rate. For instance, on the short setting shown here, there are 1023 samples of delay. At a sampling rate of 44.1 kHz, which is what we have for our session. If we create a session with the sampling rate that's double that, at 88.2 kHz, the Short ADC setting will be 2047 samples.

Double the number of samples, but equal to the same length of time, because the sampling rate is also doubled. The Long ADC value allocates a larger amount of resources for delay compensation. You should use this in sessions where there are a lot of plug-ins causing a large amount of delay. The Maximum setting should be used when the long setting just isn't long enough. Note that Pro Tools HD systems do not have this setting due to limitations with the TDM hardware. When you activate Delay Compensation, Pro Tools needs to reset itself and will save and close your session.

Let's check it out, and choose the Maximum value, and we get this dialog, Selecting this playback engine will automatically save and close your session. The session will be reopened when you are done changing settings. Are you sure you want to proceed? Choose Yes, and if we want to change anything in here, we can, but we're happy with it, so I want to click OK, and Pro Tools will reopen. And now we can see the Delay Compensation is on, we can see it right here. With it on, now we can go to the Options menu, and choose whether we want to keep it on or turn it off.

So if I check this, now I have actually turned off the Delay Compensation. We don't see it here anymore. I can go back to the Options menu, click Delay Compensation, and it will turn it back on. Now you don't need to activate Delay Compensation when you're recording your first tracks in a session. However, once your session starts to become a little more complicated, when you've got a bunch of plug-ins, effects loops, virtual instruments, using ADC will become a necessity to keep all of your tracks time-aligned.

I recommend enabling Automatic Delay Compensation during most playback and mixing sessions, and also during many recording situations. I'll discuss much more about ADC in the recording and mixing chapters in this course.

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This video is part of

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Pro Tools 10 Essential Training

108 video lessons · 16556 viewers

David Franz
Author

 
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  1. 13m 44s
    1. Welcome
      1m 20s
    2. Exploring the different versions of Pro Tools
      3m 22s
    3. Optimizing your computer before installing Pro Tools
      4m 18s
    4. Troubleshooting
      2m 19s
    5. Using the exercise files
      2m 25s
  2. 36m 55s
    1. Installing and authorizing Pro Tools
      1m 49s
    2. Connecting your Pro Tools system
      4m 31s
    3. Powering up and powering down
      58s
    4. Choosing the Playback Engine and Hardware settings
      5m 55s
    5. Optimizing Pro Tools' performance
      6m 26s
    6. Utilizing Automatic Delay Compensation (ADC)
      3m 36s
    7. Setting essential preferences
      2m 35s
    8. Creating a Pro Tools session
      4m 31s
    9. Identifying elements in a session folder
      2m 36s
    10. Creating new tracks
      3m 58s
  3. 42m 5s
    1. Exploring the Edit window
      6m 44s
    2. Exploring the Mix window
      3m 11s
    3. Exploring the Transport and Big Counter windows
      2m 57s
    4. Using the Color palette and window arrangements
      2m 35s
    5. Investigating the menus
      3m 22s
    6. Understanding samples and ticks
      3m 34s
    7. Viewing and manipulating tracks
      4m 31s
    8. Selecting inputs, outputs, and busses
      3m 58s
    9. Selecting an I/O settings file
      4m 12s
    10. Understanding signal paths and gain stages
      3m 46s
    11. Utilizing keyboard shortcuts and Keyboard Focus
      3m 15s
  4. 21m 11s
    1. Using DigiBase and the Workspace browser
      4m 14s
    2. Importing audio
      3m 0s
    3. Importing MIDI
      2m 48s
    4. Importing session data
      5m 34s
    5. Importing tracks from a CD
      2m 51s
    6. Importing video
      2m 44s
  5. 56m 46s
    1. Recording audio
      6m 13s
    2. Playing back audio and Edit window scrolling
      4m 52s
    3. Creating a click track
      5m 24s
    4. Overdubbing and using the record modes
      8m 52s
    5. Recording with playlists and Loop Record
      4m 6s
    6. Punch recording and using the monitoring modes
      4m 14s
    7. Dealing with latency and ADC
      4m 58s
    8. Creating a group
      6m 5s
    9. Adding effects while recording
      5m 16s
    10. Creating a headphone (cue) mix
      4m 29s
    11. Assigning disk allocation
      2m 17s
  6. 1h 28m
    1. Understanding nondestructive editing and region types
      3m 19s
    2. Using the Selector and Grabber tools
      3m 37s
    3. Using the Trim and Scrubber tools
      7m 5s
    4. Using the Zoomer tool and zoom presets
      5m 51s
    5. Using the Pencil tool
      3m 10s
    6. Using the Smart tool
      1m 27s
    7. Understanding the Edit modes
      5m 51s
    8. Arranging clips
      6m 40s
    9. Undoing an edit
      2m 44s
    10. Utilizing fades and crossfades
      9m 41s
    11. Building a comp track using playlists
      5m 17s
    12. Locking and muting clips
      2m 48s
    13. Special Edit window buttons
      7m 15s
    14. Creating an audio loop
      5m 19s
    15. Editing a voiceover
      9m 41s
    16. Using Elastic Time and Elastic Pitch
      9m 12s
  7. 17m 21s
    1. Working with clip groups
      4m 33s
    2. Using time, tempo, meter, key, and chord
      5m 37s
    3. Creating memory locations
      7m 11s
  8. 33m 10s
    1. Setting up MIDI on a Mac
      4m 17s
    2. Setting up MIDI on a PC
      2m 14s
    3. Setting up MIDI in Pro Tools
      2m 44s
    4. Recording MIDI data
      3m 14s
    5. Recording multiple MIDI tracks with one virtual instrument
      2m 17s
    6. Recording options for MIDI
      6m 21s
    7. Using Step Input
      4m 35s
    8. Making a drum loop with MIDI Merge
      3m 36s
    9. Composing with virtual instruments
      3m 52s
  9. 57m 1s
    1. Using the edit tools for editing MIDI data
      10m 0s
    2. Editing MIDI data in the MIDI Editor
      7m 31s
    3. Working with the MIDI Event List
      2m 12s
    4. Editing MIDI data with Event Operations
      8m 33s
    5. Quantizing MIDI tracks
      12m 16s
    6. Creating and using Groove Templates
      5m 35s
    7. Utilizing real-time properties
      5m 50s
    8. Using MIDI Learn
      5m 4s
  10. 17m 30s
    1. Exploring the Score Editor
      5m 49s
    2. Using the Score Editor
      5m 5s
    3. Setting up a score
      4m 48s
    4. Printing and exporting a score
      1m 48s
  11. 25m 39s
    1. Writing and editing automation
      6m 40s
    2. Drawing automation with the Pencil tool
      4m 2s
    3. Editing automation with the Trim and Grabber tools
      2m 58s
    4. Cutting, copying, pasting, and clearing automation
      4m 12s
    5. Turning automation on and off
      3m 52s
    6. Automating plug-ins and virtual instruments
      3m 55s
  12. 1h 49m
    1. Setting up a session for mixing
      8m 50s
    2. Setting up an effects loop
      9m 30s
    3. Working with plug-ins
      4m 33s
    4. Utilizing ADC while mixing
      9m 8s
    5. Applying EQ
      12m 43s
    6. Adding compression and limiting
      14m 25s
    7. Using delay effects
      6m 52s
    8. Applying AudioSuite plug-ins
      6m 24s
    9. Adding reverb to your mix
      6m 50s
    10. Bouncing down a mix
      4m 15s
    11. Making an MP3 for iTunes and SoundCloud
      2m 53s
    12. Setting up a session for mastering
      4m 58s
    13. Mastering a session
      10m 37s
    14. Bouncing down master recordings with Dither and Noise Shaping
      7m 24s
  13. 9m 59s
    1. Importing and displaying video files
      2m 38s
    2. Adding music, foley, ADR, and FX
      4m 29s
    3. Bouncing down video and audio together
      2m 52s
  14. 4m 0s
    1. Archiving an entire session
      4m 0s
  15. 58s
    1. Further recommendations
      58s

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