User guide

Appendix b: Configuring ASIO (Windows Only) 27
Buffer Size
You may select from the following buffer sizes
(depending on your Pro Tools hardware):
• 128 samples
• 256 samples
• 512 samples
• 1024 samples
• 2048 samples
 Small buffers have the advantage of low la-
tency in the record monitor path. (Latency is
the time delay between a signal entering the au-
dio inputs and leaving the outputs during re-
cording.)
 Larger buffers have the advantage of making
the ASIO Driver more immune to audio drop-
outs during playback and recording.
In some ASIO-compatible audio programs, per-
forming various tasks will interrupt the ASIO
Driver and may result in clicks and pops in au-
dio playback or recording. Choosing medium or
large buffers (such as 256, 512, or 1024) can help
alleviate this problem.
Changing the Buffer Size setting for the ASIO
Driver does not affect the H/W Buffer Size set-
tings in the Pro Tools Playback Engine dialog.
Device
The Device setting is always set to your installed
Pro Tools hardware.
Advanced Button
The Advanced button opens the Hardware Setup
dialog for the Pro Tools hardware that you are
using.
Hardware Setup dialog, Pro Tools HD I/O shown
For more information on the Hardware Setup
dialog, refer to the Pro Tools Reference Guide
or the User Guide that came with your
Pro Tools system.