Apple Logic Express 7 - Manual (Page 194)

194 Chapter 6 Logic’s Mixing Facilities
When you select Audio Object types, you’ll notice the following text styles are used:
• Outline: This indicates that the Object is not available. This happens when a song
was produced on a system with more tracks than yours (track 9 on an 8-track system,
for example).
• Normal: This is used for Objects that haven’t been defined in the Environment, and
are therefore not in use.
• Bold: Objects in bold have been defined in the Environment, and are in use.
• “*”: The Object is unavailable as it already exists in its stereo form.
MIDI Channel
The MIDI Channel parameter determines the MIDI channel that the Audio Object will
respond to. You can control the Audio Object remotely, using MIDI controller
information.
This also works the other way around. Once a MIDI channel number is set, you can
generate controller information on this MIDI channel, by moving the sliders and knobs
of the Audio Object itself.
When the Channel parameter is set, the MIDI channel is automatically set to the same
number, as this usually makes things easier to remember. For channels above 16, 16 is
subtracted from the track number, so that a Channel setting of 17 will default to MIDI
channel 1, Channel 18 to MIDI channel 2, and so forth.
Audio Objects in the Audio and Track Mixer
Audio Objects are the building blocks of the Audio Mixer, and an important part of the
Track Mixer. In the following section, you will learn about the differences between
Audio Object types and how you can use them.
Multiple Selection of Audio Objects
Logic allows multiple Audio Object faders to be selected (by Shift-clicking) in the Track
Mixer and Audio Mixer. The class (Instrument, Audio, Bus, Aux, and so on) of the
channel doesn’t matter.
To deselect multiple channels, click on any unselected channel. You can also select a
previously unselected track in the Arrange window.
Once selected, all channels behave as a temporary “group”, allowing you to quickly
adjust a number of settings on all selected faders by performing an operation on one
of the grouped faders. To adjust the listed parameters on all selected channels, follow
these instructions:
• Volume: Simply drag the Volume slider on any selected channel. All volume changes
are relative and logarithmic.
• Pan: Drag the Pan knob on any selected channel. All pan changes are relative.