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5.1 DigiRack Plug-Ins Guide - Digidesign Support Archives

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chapter 1<br />

Getting Started with <strong>Plug</strong>-<strong>Ins</strong><br />

<strong>Plug</strong>-<strong>Ins</strong> are special-purpose software that add<br />

additional signal processing functionality to<br />

Pro Tools.<br />

The <strong>DigiRack</strong> plug-ins included with Pro Tools<br />

provide a comprehensive set of digital signal<br />

processing effects that include EQ, dynamics,<br />

delay, and other essential functions.<br />

There are three formats of plug-ins:<br />

• TDM plug-ins (real-time)<br />

• RTAS plug-ins (real-time)<br />

• AudioSuite plug-ins (non-real-time, file-based<br />

processing)<br />

TDM <strong>Plug</strong>-<strong>Ins</strong><br />

(TDM Systems only)<br />

TDM plug-ins function as track inserts, are applied<br />

to audio during playback, and process audio<br />

non-destructively in real time. TDM plugins<br />

are designed for use on TDM-based Pro Tools<br />

systems, and rely on the processing power of<br />

<strong>Digidesign</strong> DSP cards.<br />

The number and variety of TDM plug-ins that<br />

you can use simultaneously in a session are limited<br />

only by the amount of DSP available. You<br />

can increase available DSP by installing additional<br />

MIX Farm or DSP Farm cards in your<br />

computer. This power-on-demand aspect is a<br />

significant advantage of TDM-based systems.<br />

RTAS <strong>Plug</strong>-<strong>Ins</strong><br />

RTAS (Real-Time AudioSuite) plug-ins provide<br />

features and functionality similar to their TDM<br />

counterparts, but unlike TDM plug-ins, they rely<br />

on and are limited by the processing power of<br />

your computer. The more powerful your computer,<br />

the greater the number and variety of<br />

RTAS plug-ins that you can use simultaneously.<br />

Because of this dependence on the CPU or host<br />

processing, the more RTAS plug-ins you use concurrently<br />

in a session, the greater the impact on<br />

other aspects of system performance such as<br />

available track count, edit density, and automation<br />

latency.<br />

RTAS plug-ins can be used on both TDM and<br />

non-TDM-based Pro Tools systems.<br />

AudioSuite <strong>Plug</strong>-<strong>Ins</strong><br />

Non-real-time AudioSuite plug-ins are not used<br />

during playback, but are instead used to process<br />

audio files on disk, creating new, rewritten audio<br />

files with the effect permanently applied. AudioSuite<br />

plug-ins can be used on all Pro Tools systems.<br />

Chapter 1: Getting Started with <strong>Plug</strong>-<strong>Ins</strong> 1

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