Apple Logic Pro 7 (TDM Guide) - Manual (Page 8)

8 Chapter 1 Audio Hardware and Drivers
Drivers
All audio hardware requires a driver, which acts as a communication link with the Logic
software. To use particular hardware, its/their drivers need to be activated.
Selecting and activating a particular audio hardware device is achieved directly in
Logic, via the
Audio > Audio Hardware and Drivers dialogs. Logic will automatically
recognize any installed Core Audio hardware, and will use the default settings—as
defined in the Audio MIDI Setup pane—for it. It can, however, be advantageous to
optimize the settings for your individual hardware setup, particularly if you use more
than one audio driver or a multi I/O card.
In such cases, you should fine tune the audio hardware settings.
You can choose between the Core Audio, DAE, and Direct TDM panes in Logic’s Drivers
preferences.
Core Audio
The Core Audio pane refers to the internal audio inputs and outputs of your Mac, or
another audio hardware device that uses Core Audio drivers. The Core Audio driver
parameters are described in “Core Audio and Direct TDM Settings” on page 9.
DAE
DAE is the abbreviated form of Digidesign Audio Engine. This is the driver software for
many Digidesign cards, and is primarily used for the operation of TDM hardware and/or
access to their on-board DSP chips.
The following Digidesign hardware is currently supported by Logic Pro via the DAE:
• ProTools HD Accel/HD/MIX/24/MIX
The following Digidesign hardware is unsupported by Logic Pro via the DAE:
• AudioMedia III, Digi001, M Box, Digi002, and 002R
You can operate these interfaces as plain audio I/O cards, through use of a Core Audio
driver.
You will find more information on the DAE parameters in the “DAE Settings” on
page 12.
Direct TDM
To use Direct TDM (DTDM), you require any of the abovementioned TDM hardware
from Digidesign, and the ESB TDM.
ESB TDM—included in Logic Pro—connects the DTDM native audio engine with the
DAE.