Apple logic pro 8 Handbuch

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Introduction
You can use hardware control surfaces to control and 
automate transport, mixing, recording, and other tasks in 
Logic Pro.
All of the Logic Pro functions which correspond to mixer controls, such as setting 
volume level and pan position, can be performed onscreen—using your mouse and 
computer keyboard. This is not an optimal method for precise real time control. You 
can expand your creative experience, and achieve greater flexibility and precision, by 
connecting a hardware control surface to your computer, and using it with Logic Pro.
When you move a fader on the control surface, the corresponding fader in Logic Pro 
moves with it. Similarly, when you adjust a control onscreen, the corresponding control 
on the control surface moves to the same position. You can adjust EQ or other 
parameters by turning the rotary knobs on the control surface, and have the 
corresponding parameters update instantly in Logic Pro. 
What Are Control Surfaces?
Control surfaces are hardware devices that feature a variety of controls, which can 
include faders, rotary knobs, switches, and displays. These controls can be mapped to 
functions in Logic Pro, allowing you to change parameters—such as volume or 
panning—with more precision than by using your mouse and computer keyboard. You 
can also control multiple parameters at the same time.
Control surfaces also typically provide buttons that allow you to select parameters for 
editing, or to select particular tracks/channel or banks (of channels). Many also offer a 
jog wheel, which allows you to move the playhead precisely, Transport buttons, such as 
Play, Rewind, and so on, and other controls. When you use a supported control surface 
with Logic Pro, some controls are pre-mapped to common functions. You can map 
non-assigned controls to other Logic Pro commands and functions (see “