Apple Logic Pro 9 - Manual (Page 422)

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Select a region, then edit the Fade In or Fade Out value in the Region Parameter box.
When you change an existing fade, the curve shape of the previous fade is retained.
Changing the Fade Curve Shape
You can change the fade curve shape with the Crossfade tool, or by modifying the
parameters in the Inspector’s Region Parameter box.
To adjust the fade curve shape
Do one of the following:
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Drag the curve line with the Crossfade tool.
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Select a region, then edit the Curve value in the Region Parameter box.
In the example below, a positive curve is shown for both the fade in and fade out.
In the example below, a negative curve is shown for the fade in, and a linear fade (no
curve) is shown for the fade out.
422 Chapter 13 Creating Your Arrangement