Apple Logic (1.1) - Manual (Page 69)

Chapter 7 Mixer, Instruments, and Effects 69
5 Clicking on the Channel entry in the Object Parameter box will allow you to select the
Audio Object type via a hierarchical menu, as shown in the following diagram.
Important: It is vital that no two Audio Objects are assigned to the same Track,
Instrument, and so on. In other words, don’t create two Audio Objects that are assigned
to Track 1, or Instrument 3, for example.
The MIDI Channel entry determines the channel used by the Audio Object. By default,
this will match the Audio Object’s Track number—as examples, Track 1 will be set to
MIDI channel 1, Track 2 to channel 2, and so on. Again, ensure that no two Objects of
the same type are assigned to the same MIDI channel. There is no need to concern
yourself too much with this parameter. It is of little consequence to Logic’s Track
Automation system, and is primarily of use for compatibility with songs created in older
Logic versions.
You should only set up as many Audio Objects as you think you will reasonably need. In
other words, don’t set up 64 audio playback channels if you are only likely to use 16
tracks for audio playback in your day to day use of Logic. The reasons for this:
• Each channel (Audio Object) occupies an amount of onscreen space, and when
dealing with an Environment that has, say 40 Audio Objects, you will find yourself
scrolling endlessly through faders when using the Environment’s Audio Mixer (Audio
> Audio Mixer).
• Each Audio Object uses system resources, even when not in use.
You can return to the Environment (or run the Logic Setup Assistant again) and simply
create (or delete) additional Audio Objects at any time. Note that the maximum
number of each Audio Object type that can be created is primarily determined by the
version of Logic you are using.