Key repeat checkbox – Apple Logic Express 7.2 User Manual

Page 44

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44

Chapter 1

Control Surface Setup

Local Feedback (Fader/Knob) Checkbox

If enabled, no feedback is sent while the parameter is in Touched mode. This prevents
motorized faders from “fighting” against the user.

Key Repeat Checkbox

When you enable the Key Repeat checkbox, the assignment is repeatedly executed.
The Key Repeat Rate slider—set in the Mac OS X Keyboard & Mouse preferences—
determines how quickly Logic 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 Logic Control, for example, you can
simply hold down the Zoom In button. Logic will zoom in until the Zoom In button is
released. This mirrors the behavior of the Zoom key commands. In earlier versions, you
had to repeatedly press the (Logic 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.

Logic Pro factory key command assignments already support the Key Repeat function
(if useful and/or applicable to the control surface/device)—making changes
unnecessary for use of this new 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 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.

Typically, the value range of 1–127 is used for the button pressed message. The zero (0)
value is generally used for button released.

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