User Manual

Chapter 6: System Setup 71
Configuring Pro Tools
Aggregate I/O
(Mac Only)
On Mac systems using Core Audio, you can se-
lect Pro Tools Aggregate I/O as the Current Engine
to use the built-in audio inputs and outputs on
your Mac computer. You can configure the
Pro Tools Aggregate I/O setting in the Mac Au-
dio Setup, which can be accessed from the
Pro Tools Hardware Setup.
To configure Pro Tools Aggregate I/O settings:
1 Choose Setup > Hardware.
2 In the Peripherals list, select Pro Tools Aggre-
gate I/O—or whichever Built-in input or output
option is selected as the Current Engine in the
Playback Engine.
3 Click the Launch Setup App button.
4 In the Audio Devices window of the Mac Au-
dio Setup, configure the Pro Tools Aggregate I/O
settings.
Configuring Default Sample Rate
Setting in Hardware Setup
The Sample Rate setting in the Hardware Setup
dialog determines the default sample rate when
you create a new session. This setting is available
only when there is no session open. Otherwise,
the current session sample rate is displayed, but
cannot be changed.
On Pro Tools HD, you can change the default
Sample Rate in the Hardware Setup, or in the
Playback Engine.
On Pro Tools, you can only change the default
sample rate in the Hardware Setup or using the
control panel for M-Audio and third-party audio
interfaces.
Hardware Setup for Pro Tools Aggregate I/O (Mac only)
Pro Tools Aggregate I/O in the Audio Devices window
On Pro Tools HD, the Sample Rate setting
can affect the number of available voices.
You can change the sample rate when
creating a new Pro Tools session by selecting
a different sample rate in the New Session
dialog.