Apple Logic Pro 9 - Manual (Page 1118)

Bank
The Bank parameter hides or shows the bank MSB/LSB display at the bottom of the
GM mixer. You can save space by hiding the bank display, unless you need to select
program banks numerically.
Working with the GM Mixer Channel Strips
The MIDI channel strips work as a remote control for the mixing parameters of the
controlled sound modules and synthesizers (volume and pan, for example).
Choosing a Program or Bank
If your sound source understands bank select events, you can choose the bank number
with the Bank parameter field at the bottom of each channel strip (only visible if the Bank
parameter in the Object Parameter box is selected). Remember that not all synthesizers
support bank select events. You can use several different bank select formats (see
Mapped
Instrument Objects ).
The Program button allows you to select a sound by name. Click it to open a menu that
contains all GM sound names. Each channel has its own menu.
Adjusting the Level of a Channel
The Level fader controls the output level of a MIDI channel. Adjusting it sends controller
7 via your MIDI interface.
To adjust the output level of a channel
µ
Drag the Level fader up or down.
Muting a Channel
The Mute button switches the volume of the channel between zero and the current Level
fader position. In practice, this means that if the button is down, the channel is muted.
If you turn the Mute button off, the current Level fader position (and value) is used.
To mute or unmute a channel
µ
Click the Mute button of the channel.
Assigning the Knobs to Controllers
You can assign any controller to each of the knobs.
To assign a controller to one of the knobs
1 Click the label next to the knob.
1118 Chapter 37 Environment Objects Reference