Apple Logic Express 9 - Manual (Page 600)

To remove tempo information from an audio file
µ
Choose Options > Tempo > Remove Tempo Information from Audio File in the main
menu bar.
Then you can export the current tempo information to the audio file.
To export tempo information to an audio file
µ
Choose Options > Tempo > Export Tempo Information to Audio File in the main menu
bar.
As an example: Imagine the situation where you have an audio recording that wasn’t
recorded to a metronome click, and therefore contains slight tempo variations. How do
you get this audio recording to follow the tempo of your current project? Your first step
is to beat map the track to make the display of the free recording rhythmically meaningful
(see
Beat Mapping Audio Regions ). Your next step is to remove the tempo information
from the audio file (see above). As a final step, export the current project tempo
information to the audio file (see above).
600 Chapter 18 Working with Tempo and Audio Regions