Apple Logic Pro X - Manual (Page 403)

Chapter 14 Edit the timing and pitch of audio 403
Use Varispeed to alter the speed and pitch of audio
Varispeed provides a way to speed up or slow down the entire project, similar to the original
varispeed feature of tape machines. The most practical use for this option is checking how a
project might sound at a faster or slower tempo, and for practicing or recording a performance
at a lower speed.
In Logic Pro, you can speed up or slow down a project between −50 percent and +100 percent,
which is between 50 percent and 200 percent of the original tempo.
Varispeed is only available when Show Advanced Tools is selected in the Advanced
preferences pane.
Turn Varispeed on or off
m Click the Varispeed button in the control bar.
Note: If you don’t see the Varispeed button in the control bar, Control-click the control bar,
choose Customize Control Bar and Display from the shortcut menu, choose Custom from the
LCD pop-up menu, then select the Varispeed checkbox.
When Varispeed is turned on, the button and display glow orange.
Choose a Varispeed mode
m Click the upper part of the Varispeed display in the control bar, then choose one of the following:
•
Speed Only: Use to pitch shift the master output signal to balance the pitch change caused by
varispeed. Only the speed changes, not the pitch.
•
Varispeed (Speed and Pitch): Use to emulate classic tape varispeed, where the pitch changes to
reflect the speed change.
•
Varispeed and MIDI: Use to emulate classic tape varispeed and simultaneously transpose non-
drum MIDI tracks, quantized to semitones.