Apple Logic Pro X - Manual (Page 588)

Chapter 19 Make global changes to a project 588
Create tempo changes using Beat Detection
When Advanced Editing options is selected in the Advanced preferences pane, you can
use Beat Detection to find the average tempo of one or more selected audio or MIDI regions.
The Beat Detection process detects up to five tempi across the selected regions, and displays
the reliability of each estimate, from highest (most reliable) to lowest (least reliable). The highest
value is selected by default. You can adjust the average tempo value using a multiplier, divisor, or
decimal rounding, and choose how and where to apply the tempo change.
Adjust the tempo of regions using Beat Detection
1 Select one or more regions in the Tracks area.
2 Choose Edit > Tempo > Adjust Tempo using Beat Detection (or use the corresponding key
command).
The selected regions are analyzed; the results appear in a dialog that looks similar to
the following.