Apple Logic Pro 9 - Manual (Page 847)

You can save both audio and software instrument regions as Apple Loops in Logic Pro.
For audio regions, a default set of transients—based on the project’s tempo
information—is automatically created. You can also use the Apple Loops Utility to create
Apple Loops from audio regions. The Apple Loops Utility is a companion application to
Logic Pro that allows you to manage metadata tags and transients in audio files. The
Apple Loops Utility offers sophisticated tag editing functions for audio files. You can, for
example, set the transients manually—independent of the project tempo. The Apple Loops
Utility does not allow you to create Software Instrument Apple Loops (SIALs).
You use the Apple Loops creation utilities available in Logic Pro to create any of the
following files: an Apple Loops file based on an audio file that matches the project tempo,
a Software Instrument Apple Loops (SIAL) file, or a nonlooped Apple Loops file based on
an audio file that does not match the project tempo. Nonlooping Apple Loops (or
one-shots) do not follow the project tempo and key. This is useful if you want to add
discrete, nonmusical sounds (such as sound effects) to the loop library, which should not
be altered by the tempo and key properties.
If you want to create a looped Apple Loops file based on an audio file that does not match
the project tempo, use the Apple Loops Utility.
This chapter covers the following:
• Creating Apple Loops in Logic Pro (p. 848)
• Creating Apple Loops in the Apple Loops Utility (p. 851)
• Converting ReCycle Files into Apple Loops (p. 852)
• Adding Apple Loops to the Loop Browser (p. 854)
• Adding Acid Loops to the Loop Browser (p. 855)
• Using Global Tracks with Apple Loops (p. 855)
• Converting Apple Loops to Audio Files (p. 857)
• Converting the Sample Rate of Apple Loops (p. 858)
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