Apple logic pro 8 매뉴얼

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Chapter 2   
 Customizing Controller Assignments
 
Text Feedback Checkbox
When selected, a text representation of the current value is sent to the control surface’s 
display. The control surface display facilities determine the display position and number 
of characters that are used.
Local Feedback (Fader/Knob) Checkbox
When selected, no feedback is sent while the parameter is in Touched mode. This 
prevents motorized faders from “fighting” against the user.
Key Repeat Checkbox
When selected, the assignment is repeatedly executed. The Key Repeat Rate slider—set 
in the Mac OS X Keyboard & Mouse preferences—determines how quickly Logic Pro 
repeats the assignment. The duration that the button/controller must be held for, 
before the assignment is repeated, is set with the Delay Until Repeat slider in the 
Keyboard & Mouse preferences. 
Example:  This facility is particularly useful for the zoom function:  If you assign a key 
repeat command to the Zoom buttons on the Mackie Control, you can simply hold 
down the Zoom In button. Logic Pro will zoom in until the Zoom In button is released. 
This mirrors the behavior of the Zoom key commands. The alternative would be 
repeated presses of the (Mackie Control) Zoom buttons to zoom in/out more than one 
level. 
Note:  The Key Repeat checkbox is only available for key commands, key presses, and 
relative value changes. If any other assignment class is selected, the checkbox is 
dimmed. 
The default key command assignments support the Key Repeat function (if useful and/
or applicable to the control surface/device)—making changes unnecessary for use of 
this functionality.
If you want to enable the Key Repeat function for your own assignments, you may 
need to use the re-learn option for the assigned message. Key Repeat messages must 
include the Lo7 byte, which provides information on the up (released) or down 
(pressed) state of the assigned button. 
Logic Pro guides you through the re-learning process:  The current MIDI message is 
automatically cleared, Learn mode is activated, and a help tag prompts you to send the 
desired MIDI message. 
Releasing the assigned button—after learning the MIDI message—automatically 
creates the Lo7 byte, and assigns the Lo7 value (for the button release message) to the 
Min parameter. The Lo7 value for the button pressed message is automatically assigned 
to the Max parameter.