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chapter 1
Introduction
Plug-ins are special-purpose software compo-
nents that provide additional signal processing
functionality to Pro Tools
The DigiRack™ plug-ins included with
Pro Tools provide a comprehensive suite of dig-
ital signal processing effects that include EQ, dy-
namics, delay, and other essential functions.
References to Pro Tools LE™ in this guide
are usually interchangeable with Pro Tools
M-Powered™ or Pro Tools Academic™, ex-
cept as noted in the Pro Tools M-Powered
and Academic Getting Started Guides.
Plug-in Formats
There are three formats of plug-ins:
• TDM plug-ins (real-time, DSP-based)
®
• RTAS
plug-ins (real-time, host-based)
• AudioSuite™ plug-ins (non-real-time, file-
based processing)
®
.
TDM Plug-ins
(Pro Tools HD Only)
TDM (Time Division Multiplexing) plug-ins
function as track inserts, are applied to audio
during playback, and process audio non-de-
structively in real time. TDM plug-ins are de-
signed for use with Pro Tools HD software on
®
Pro Tools|HD
systems, and rely on the process-
ing power of Digidesign DSP cards.
The number and variety of TDM plug-ins that
you can use simultaneously in a session are lim-
ited only by the amount of DSP available. You
can increase available DSP by installing addi-
tional DSP cards (such as HD Core, HD Accel, or
HD Process cards) in your computer. This
power-on-demand aspect is a significant advan-
tage of Pro Tools|HD systems.
Chapter 1: Introduction
1
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