Apple Logic Pro 8 - Manual (Page 646)

646 Chapter 30 Advanced Tempo Operations
To copy all tempo events from one tempo alternative to another:
m Hold Option, and choose the target tempo alternative from the pop-up menu.
This creates a replica tempo map, which can be adjusted slightly, allowing you to
experiment with small tempo variations, while retaining a fallback map.
The Relationship Between the Tempo and Beat Mapping Track
Actions performed in the Beat Mapping track result in changes to the Tempo track.
These include alterations to existing, or the creation of new, tempo change events.
Given this behavior, you should avoid making changes in the Tempo track after using
Beat Mapping functions. If you do so, the timing derived from the Beat Mapping
functions will be destroyed. For more information about the Beat Mapping track, see
Chapter 31, “
Beat Mapping Regions ,” on page 655.
Recording Tempo Changes
All tempo alterations made when Logic Pro is in record mode are automatically stored
as tempo events on the Tempo track. These events can be created with external MIDI
controllers, the Environment tempo fader, or external synchronization signals. You can
edit recorded tempo events in the Tempo track or one of the tempo editors, discussed
later in this chapter.
To enable tempo change recording:
m Turn on the “Allow tempo change recording” checkbox in File > Project Settings >
Recording.
Adjusting the Tempo to Fit Audio Regions
The Options > Tempo > Adjust Tempo using Region Length and Locators command
adjusts the project tempo, by creating a tempo change event at the start point of the
selected audio region. This ensures that the length of the selected audio region exactly
matches the distance between the locators.
For more information on this function, see “ Setting the Project Tempo to Match an
Audio Region ” on page 524.
Using the Tempo List
The Tempo List displays all tempo events in your project. You can open the Tempo List
in the Arrange window, and as independent window.
To open the Tempo List, do one of the following:
m Click the Lists button in the Arrange Toolbar, then click the Tempo tab (or use the
Toggle Tempo List key command).