Specifications
Pro Tools Reference Guide40
Delay Compensation Engine
(Pro Tools 6.4 for Pro Tools|HD Systems Only)
The Delay Compensation Engine lets you en-
able Delay Compensation for managing DSP de-
lays in the Pro Tools mixer. For more informa-
tion, see “Delay Compensation” on page 428.
There are three settings in the Playback Engine
dialog for dedicating DSP resources for Delay
Compensation:
None Allocates no DSP resources for automatic
delay compensation.
Short Allocates minimal DSP resources for delay
compensation for each channel. This is the
most efficient setting for Pro Tools|HD Accel
systems.
Long Allocates maximum DSP resources for de-
lay compensation for each mixer channel. Long
delay compensation uses the same DSP re-
sources used by high DSP overhead plug-ins.
To configure the Delay Compensation Engine:
1 Choose Setups > Playback Engine.
2 From the Delay Compensation Engine pop-up
menu, select a Delay compensation setting.
3 Click OK.
The delay compensation setting is saved as a ses-
sion and system preference.
DAE Playback Buffer Size
The DAE Playback Buffer Size determines the
amount of memory DAE uses to manage disk
buffers, which affects system performance.
◆ Lower DAE Playback Buffer Size settings can
improve playback and recording initiation
speed. However, a lower setting can make it dif-
ficult for slower hard drives to play or record
tracks reliably.
◆ Higher DAE Playback Buffer Size settings can
allow for a higher density of edits in a session.
However, a higher setting can cause a time lag to
occur before playback or recording begins. It can
also cause a time lag to occur when you are ed-
iting during playback.
To change the DAE Playback Buffer Size:
1 Choose Setups > Playback Engine.
2 From the DAE Playback Buffer pop-up menu,
select a buffer size. Memory requirements for
each setting are shown at the bottom of the
Playback Engine dialog.
3 Click OK.
4 If Pro Tools needs more system memory for
the DAE Playback Buffer, it will prompt you to
restart your computer.
Playback Engine dialog (Pro Tools 6.x)