Apple Logic Pro 9 - Manual (Page 1106)

4-Channel Vector Mode
If you set a vector fader’s Vert and Horz definitions to the same MIDI event (the same
MIDI controller and channel), the vector fader sends out four MIDI events each time the
crosshair is moved.
These are the same MIDI event (a controller, for example), sent on four consecutive MIDI
channels, starting with the channel set in the Vert definition.
• Upper-left for the lowest channel (channel 3, for example)
• Upper-right (channel 4)
• Lower-left (channel 5)
• Lower-right (channel 6)
The values of these MIDI events correspond to the proximity of the crosshair to the vector
fader’s four corners:
• In the center, all channels receive a value of 32.
• At the corners, the corresponding channel receives a value of 127 and all remaining
channels receive a value of 0 (if using the default range of 0 to 127).
If you alter the range, the center and corners behave differently, with the four values
always totalling 125.
Special Faders Overview
The Environment provides a number of special fader objects that are purpose-built to
perform certain functions.
Cable switchers, alias assigners, and meta messages are types of faders that do not
generate MIDI events. They share the same Output definition type, either Switch
GM Mixer
Objects or Meta, depending on the current -1- value setting:
• If the -1- value is 48, the fader is a cable switcher.
• If the -1- value is 46, the fader is an alias assigner. (See Meta Event Faders .)
• If the -1- value is any other value, the fader sends out meta messages of a type that
corresponds to the -1- value. (See Meta Event Faders .)
To create a cable switcher
Do one of the following:
µ
Choose New > Fader > Specials > Cable Switcher.
µ
Change an existing fader’s Output definition to Switch/Meta, and set its -1- value to 48.
To create an alias assigner
Do one of the following:
µ
Choose New > Fader > Specials > Alias Assigner.
1106 Chapter 37 Environment Objects Reference