User`s guide

Chapter 3: Pro Tools Concepts 11
Track
A track is where audio or MIDI regions are
strung together in a playlist. A playlist can
be made up of a single region or many sep-
arate regions. It can be made up of similar
elements, such as regions from several dif-
ferent takes of a solo, or dissimilar ele-
ments, such as several sound effects.
Voice
(TDM Systems Only)
On TDM-equipped Pro Tools systems, voice
refers to the number of digital audio events
that Pro Tools can play back simulta-
neously. For example, a Pro Tools 24 core
system is a 32-voice system and can there-
fore playback 32 different audio events at
one time.
On TDM systems, you can have more
tracks in a session than your system has
voices; they just cannot all play back at the
same time. These tracks are referred to as
virtual tracks.
Channel
The term channel is used to describe several
related components of a Pro Tools system.
The first refers to a physical input or output
of your Pro Tools system. For example, an
888/24 I/O Audio Interface provides 8
channels of analog input and output to a
TDM-equipped system, and a Digi 001 sys-
tem provides up to 18 channels of input
and output to a Pro Tools LE system.
The second use of the term channel refers to
a mixer strip in the Pro Tools Mix window.
The term channel strip refers to the mixer
strip of any Audio track, MIDI track, Auxil-
iary Input track or Master Fader track in a
session.
Audio track in the Edit Window
Choosing a voice for an Audio track
Rear view of 888/24 I/O Interface
Channel strip from the Mix window
Computer 1
ANALOG OUTPUT ANALOG INPUT AES/EBU OUTPUT AES/EBU INPUT
Computer 2
8 CH Mode
2 x 4 CH Mode
S/PDIF
IN
S/PDIF
OUT
SLAVE CLOCK
IN
SLAVE CLOCK
OUT
7
8
5
6
3
4
1
2
7
8
5
6
3
4
1
2
5/6
7/8
1/2
3/4
5/6
7/8
1/2
3/4