Apple Logic Pro 9 - Manual (Page 579)

Using the Sample Editor’s Groove Machine
You can use the Groove Machine to alter the feel, swing, or groove of digital audio material,
in percentage steps. In other words, this tool can quantize straight audio!
You can also strictly quantize audio that “grooves a little too much” with the Quantize
Engine (see
Using the Sample Editor’s Quantize Engine ).
Opening the Sample Editor’s Groove Machine
You need to select an area within an audio file before you can open the Groove Machine.
Important: Before you open the Groove Machine you should ensure that the tempo of
Logic Pro exactly matches that of the selected audio material, or the Groove Machine
won’t work accurately. You can, however, set the tempo and length directly in the Groove
Machine, using the “Corresponds with Tempo” and To Bar Length parameters.
To open the Groove Machine
1 Select the area of the audio region in the Sample Editor that you want to process through
the Groove Machine.
2 Choose Factory > Groove Machine (or use the corresponding key command).
Note: Any changes you make to the settings will be reflected in the graphical display.
579 Chapter 17 Editing Audio in the Sample Editor