Apple Logic Pro 8 - Manual (Page 263)

Chapter 11 Adding Pre-Recorded Media 263
Two important data types that Apple Loops may include are metadata tags and
transient markers. Logic Pro uses metadata tags to help locate files when using the
Search features of the Loop Browser. Transient markers indicate where beats occur in
the file. Logic Pro uses this information, in conjunction with the metadata tags, to
match the file’s tempo and key to the project tempo and key, thus ensuring the best
possible playback quality. This functionality allows you to play back several Apple
Loops simultaneously, and have them sound good, even if they have different tempos
and keys.
To access the Loop Browser in the Arrange window:
m Click the Media button in the Arrange Toolbar, then click the Loop tab (or use the
Toggle Loop Browser key command).
To open the Loop Browser as an independent window:
m Choose Window > Loop Browser (or use the corresponding key command).
Green and Blue Apple Loops
The Loop Browser contains two types of Apple Loops: those featuring a blue sound
wave icon and others with a green note icon.
Both contain audio data, and both can contain additional information for time
stretching, transposition, indexing, and searching.
Green and blue
Apple Loops in the
Loop Browser