Apple Logic Pro 8 TDM - Manual (Page 8)

8
Simultaneous Operation of TDM and Other Hardware
Please note the following if you wish to use a TDM system and other audio hardware
simultaneously.
Control Playback
The Audio Bin, Browser, and Sample Editor allow you to choose the desired playback
hardware unit: Simply Control-click the Prelisten button, and choose the desired
hardware from the shortcut menu:
 If you choose Core Audio, an additional audio channel strip (named “Prelisten’) is
created automatically in the Environment, and used for playback.
 If you choose the DAE, the highest numbered audio channel strip (possible with your
configuration) is used for playback. Note that this channel may be assigned to an
arrange track when you use the Create Track functions.
Total Number of Audio Tracks
When operating different audio hardware devices simultaneously, the number of
possible playback tracks cannot be determined by merely adding them up. This is
especially true if the connected systems place a strain on the CPU.
The number of tracks may also be reduced if the connected systems access the same
hard disk bus. The impact of this can be reduced (resulting in an increase in the total
track number) by using different hard drives for the various systems. As an example;
DTDM or Core Audio and/or a QuickTime movie reads from an internal drive, and DAE
from an external FireWire drive.