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Instrument Plug-ins
Instrument plug-ins are unique from other plug-
ins in that they generate audio by synthesis or
sample playback, and are controlled by MIDI.
Typically, plug-in instruments are inserted on
Instrument tracks.
You can also insert plug-in instruments on Aux-
iliary Input tracks and control them with an ad-
ditional MIDI track. In some cases you may
want to insert and instrument plug-in on and
instrument track, assign any additional audio
outputs in may have to additional Auxiliary In-
put tracks, and control it from not only the In-
strument track on which it is inserted, but also
from multiple MIDI tracks (for example, if you
are using a multiple output–capable drum ma-
chine plug-in).
For more information on Instrument tracks,
see the Pro Tools Reference Guide.
Multiple Outputs for Instrument
Plug-ins
You can route the output of an instrument plug-
in to the main track outputs and to individual
track inputs on other tracks. This lets you route
multiple samples or synth sounds through sepa-
rate outputs for individual processing.
For specific information about using multi-
ple plug-in outputs with third-party plug-
ins, consult the documentation from the
plug-in manufacturer.
Main and Auxiliary Plug-in Outputs
When a plug-in that has both main and auxil-
iary outputs is inserted on a track, the plug-in's
main outputs are routed through the track that
the plug-in is inserted on, and the plug-in's aux-
iliary mono or stereo outputs are available in the
track input pop-up menu on other tracks.
If none of the inserted plug-ins has auxiliary
outputs, the plug-in category in the track in-
put pop-up menu is grayed out.
RTAS Plug-ins on Auxiliary
Input and Master Fader Tracks
(Pro Tools HD Only)
In Pro Tools HD, RTAS plug-ins can be inserted
on Auxiliary Input and Master Fader tracks, or
after TDM plug-ins on any kind of track.
While HTDM plug-ins have a fixed buffer
size, latency caused by RTAS plug-ins is ad-
justable via the HW Buffer Size setting in
the Playback Engine dialog. For more infor-
mation, see the Pro Tools Reference Guide.
When you use a previous version of
Pro Tools to open a session originally cre-
ated in Pro Tools 7.0, any RTAS plug-ins
inserted on Auxiliary Input or Master Fader
tracks—or after TDM plug-ins on any kind
of track—are made inactive.
This also affects the following RTAS-related be-
havior in Pro Tools:
• Voice usage and total latency for RTAS
plug-ins
• Limitations on inserting or removing plug-
ins during playback
Chapter 3: Working with Real-Time Plug-ins
27
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