Apple Logic Pro 9 (TDM Guide) - Manual (Page 14)

• The TDM hardware determines the overall features of the system: number of tracks,
number of TDM plug-ins that can be used simultaneously, number of inputs and outputs,
and so on. See your Pro Tools system manuals for further information.
• Stereo recordings require two tracks, and are recorded as two separate files. In Logic Pro’s
Arrange window, a stereo recording is handled as two linked regions, which use two
tracks. In the Sample Editor window, stereo recordings are displayed as a stereo file.
All odd-numbered audio channels (1, 3, 5, 7, and so on) can be switched to stereo.
Doing so will cause the following even-numbered audio channels to be “locked” to the
preceding odd-numbered channels. The odd-numbered channel controls both sides
of the stereo recording.
• DAE (Digidesign Audio Engine) does not support the QuickTime engine, which prevents
you from using the Logic Pro movie facilities if you are working exclusively with the
DAE. Activate Core Audio or Direct TDM to use the movie facilities when working with
the DAE.
TDM Plug-ins
Correctly installed TDM plug-ins and settings can be used in Logic Pro. Use of TDM plug-ins
is very similar to the use of Logic Studio and Audio Units plug-ins. TDM plug-ins can be
fully automated.
Note: Logic Pro does not support TDM Surround and multi mono plug-ins with two or
more channels.
All TDM plug-in settings are saved with the project, and are automatically restored when
the project is next loaded.
Logic Pro can read the Digidesign format for plug-in settings (the supplied settings of
most plug-ins are saved in this format). Logic Pro automatically displays the corresponding
files in a dialog when loading settings with the plug-in window Settings menu. Settings
files are usually located in a Settings folder in the Library/Application Support/Digidesign
folder. The name of the most recently chosen setting is indicated by a dot in the plug-in
window Settings menu.
Support of TDM Plug-in Side Chains
You can select a different source for the side chain input (or key input) in some
TDM plug-ins—Compressors, Noise Gates, Vocoders, and so on. All tracks, busses, or
inputs can be used as a side chain input source.
RTAS Plug-ins
RTAS plug-ins cannot be used in Logic Pro. Only Audio Units, TDM, and Logic Studio
plug-ins are supported.
14 Chapter 2 About TDM