Specifications

Chapter 2: Pro Tools Application and System Changes 7
New Pro Tools System
Settings
New Playback Engine Settings
Pro Tools lets you adjust the performance of
your system by changing system settings that
affect its capacity for processing, playback, and
recording. These system settings are available in
the Playback Engine (Setup > Playback
Engine).
Current Engine
Pro Tools 9.0 provides a new system setting for
selecting the audio engine for Pro Tools to use
with your audio interface. The available options
are determined by which audio interfaces are
connected and have compatible drivers in-
stalled.
Changing the Current Engine setting can be use-
ful if you have multiple audio interfaces con-
nected to your computer with different routing
configurations in your studio, or if you want to
prepare a session for use with a specific interface
on a different system (for example you might
want to prepare a session created on your HD
system for use with the built-in audio on your
Mac laptop).
To select the audio engine for Pro Tools to use
with your audio interface:
1 Choose Setup > Playback Engine.
2 From the Current Engine selector, select your
audio interface:
• For Pro Tools|HD and Pro Tools|HD Native
systems, use the default setting of HD TDM
or HD Native.
• For supported Pro Tools and M-Audio au-
dio interfaces (such as the Mbox Pro or Pro-
Fire 2626), selecting the name of the
corresponding interface uses the Direct I/O
engine for Pro Tools.
• For third-party audio interfaces with com-
patible CoreAudio (Mac) or ASIO (Win-
dows), select the name of the
corresponding Core Audio (Mac) or ASIO
(Windows) compatible audio interface.
• On Mac systems, if you are using built-in
audio, select any of the available built-in
options for playback or select Pro Tools Ag-
gregate I/O for simultaneous input and out-
put with the built-in I/O hardware options.
3 Click OK.
When changing engines with a Pro Tools ses-
sion open, Pro Tools must close and relaunch
the session to be able to initialize the new en-
gine.
Playback Engine for Pro Tools|HD system