Configuring Delay Compensation Engine

Depending on your Pro Tools system, the amount of Delay Compensation available for your session is set in the Playback Engine. The total amount of delay due to inserts and mixer routing for the entire session is displayed in the Session Setup window.

Depending on your Pro Tools system, there are up to four settings available in the Playback Engine to dedicate processing resources for Delay Compensation:

None

Allocates no resources for Delay Compensation.

Short

Provides 1,023 samples at 44.1/48 kHz, 2,047 samples at 88.2/96 kHz, or 4,094 samples at 176.4/192 kHz of Delay Compensation for each channel. This is the most efficient setting. For sessions with only a few plug-ins that do not induce too much DSP and host–based delay, this setting should be sufficient.

Long

Allocates 4,095 samples at 44.1/48 kHz, 8,191 samples at 88.2/96 kHz, or 16,382 samples at 176.4/192 kHz of Delay Compensation for each mixer channel. For sessions with a lot of plug-ins resulting in a large amount of DSP and host–based delay, select this setting.

Maximum

Allocates 16,383 samples at 44.1/48 kHz, 32,767 samples at 88.2/96 kHz, or 65,534 samples at 176.4/192 kHz of Delay Compensation for each mixer channel. For sessions with certain plug-ins that result in more the 4,000 samples of delay, select this setting.

The Maximum option is unavailable with Pro Tools|HD systems.

Pro Tools HD with Avid HDX hardware acceleration always uses the full DSP resources of the Maximum setting when Delay Compensation is enabled. The None, Short, and Long settings are included solely for compatibility with legacy sessions.

To configure the Delay Compensation Engine:

1 Choose Setup > Playback Engine.

2 From the Delay Compensation Engine pop-up menu, select a Delay Compensation setting.

3 Click OK.