DigiDesign Pro Tools 8.0 Reference Manual page 202

Setting Voice Assignment
A track's voice assignment can be turned off or
set to be dynamically allocated, and with
Pro Tools HD, can also be explicitly assigned to a
specific voice number.
On all Pro Tools systems, you can use Dynami-
cally Allocated Voicing to automatically take
care of voice management in the background,
assigning voices not in use by other tracks.
Pro Tools LE supports Dynamically Allocated
Voicing only; it does not support explicit voice
assignments.
With Pro Tools HD, tracks assigned to a specific
voice number take priority over dynamically al-
located tracks and support voice borrowing (see
"Voice Borrowing" on page 186). To ensure that
a track is heard, or that it is available for Quick-
Punch, TrackPunch, or DestructivePunch re-
cording, assign an explicit voice to that track.
With Pro Tools HD, QuickPunch, Track-
Punch, and DestructivePunch require addi-
tional voices. For more information, see
Chapter 21, "Punch Recording Modes."
With Pro Tools HD, the initial insert of an
RTAS plug-in uses additional voices in cer-
tain situations. See "Voice Usage and Total
Latency for RTAS Plug-ins" on page 874 .
For stereo and multichannel tracks, voices ap-
pear in pairs and multichannel groups. Voices
already explicitly assigned to another track ap-
pear in bold in the Voice selector's pop-up
menu.
With Pro Tools HD, you can preview audio
files in DigiBase browsers during session
playback. This requires additional playback
voices. For more information, see "Reserve
Voices for Preview in Context" on page 252.
184 Pro Tools Reference Guide
To set the voice assignment for a track:
Click the Voice selector and set the track to
Dyn, Off, or select a voice number (Pro Tools HD
only).
Voice selector for stereo audio track (Pro Tools HD
shown)
Elastic Audio and RTAS plug-ins are not
allowed on explicitly voiced tracks (Pro Tools
HD only). Use Dynamically Allocated
Voicing for tracks on which you want to use
Elastic Audio or RTAS plug-ins.