Specifications
Chapter 6: System Setup 71
Delay Compensation Engine
Depending on your Pro Tools system, the Delay
Compensation Engine
setting in the Playback En-
gine determines how much DSP or host-based pro-
cessing resources are dedicated to Pro Tools Delay
Compensation, which manages DSP and host-
based delays in the Pro Tools mixer.
Within a session, you can enable or disable Delay
Compensation (
Options > Delay Compensation).
When Delay Compensation is disabled, it uses no
DSP or host-processing resources.
To configure the Delay Compensation Engine:
1 Choose Setup > Playback Engine.
2 From the Delay Compensation Engine pop-up
menu, select
None, Short, Long, or Maximum.
3 Click OK.
Delay Compensation Settings
Depending on your Pro Tools system, there are up
to four settings available in the Playback Engine to
dedicate processing resources for Delay Compen-
sation:
None
Allocates no resources for Delay Compensa-
tion.
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 ses-
sions 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 Com-
pensation for each mixer channel. For sessions
with plug-ins on mixer channels that result in more
the 4,000 samples of delay at 48 kHz, select this
setting.
For more information, see “Delay Compen-
sation” on page 971.
The Maximum option is unavailable with
Pro Tools|HD systems.
Pro Tools HD with Avid HDX hardware ac-
celeration always uses the full DSP resources
of the Maximum setting when Delay Compen-
sation is enabled. The None, Short, and Long
settings are included only for compatibility
with legacy sessions.