Apple Logic Pro X - Manual (Page 384)

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Flex Time and Pitch overview
Flex Time—similar to what is often referred to as elastic audio in other applications—greatly
simplifies the process of editing the timing of audio material. You can compress or expand
the time between specified points in an audio region without the need for more traditional
processes like cutting, nudging, and crossfading.
You edit the timing of audio material by choosing a Flex Time algorithm. When you choose
an algorithm, the contents of the audio track are analyzed for transients, or significant peaks,
and any detected transients are marked in the audio regions. You then edit the timing using
flex markers. When you move a flex marker, the audio on either side of it is time compressed
or expanded. The initial boundaries within which this is done are determined by the
transient markers.
Flex Pitch allows you to quantize and edit the pitch of audio material. You edit the pitch of audio
material by choosing the Flex Pitch algorithm. The contents of the audio track are analyzed for
pitch using a pitch detection process, and the results are plotted on a pitch curve.
You can edit the timing of audio in the Tracks area and the pitch in the Audio Track Editor.
Flex Time is also available in the Audio Track Editor and Flex Pitch in the Tracks area, when
Show Advanced Tools is selected in the Advanced preferences pane.
Turn on flex in the Tracks area
1 Do one of the following:
•
Choose Edit > Show Flex Pitch/Time from the Tracks area menu bar (or press Command-F).
•
Click the Flex button in the Tracks area menu bar.
A Flex button and Flex pop-up menu appear in the track header of each audio track.
Flex button Flex button
Flex pop-up menu
2 Click the Flex button in the track header of the audio track you want to edit.
The Flex pop-up menu is now available for use.
Edit the timing and pitch of audio
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