Apple GarageBand Jam Pack: Voices - Manual (Page 9)

Convert Software Instrument Loops to Real Instrument Loops
As stated above, Software Instrument loops require more processing power than Real
Instrument loops. If your computer has 512 MB or more of memory, the performance
impact of using Software Instrument loops is much higher than with Real Instrument
loops. Whenever you use Software Instrument loops that you don’t intend to edit later,
converting them to Real Instrument loops can increase performance.
You can convert a Software Instrument loop to a Real Instrument loop by Option-
dragging it from the loop browser to the timeline. You can change the default behavior
in GarageBand preferences so that Software Instrument loops are always converted to
Real Instrument loops when you drag them from the loop browser to the timeline.
Lock Tracks
When you lock a Software Instrument track, the track is rendered to your computer's
hard disk. Playing the rendered track requires less processing power and less memory
than playing the Software Instrument track. By locking tracks, you trade processor
usage for hard disk usage. This can provide an increase in performance (especially on
computers with slower processors, or when you are using many instruments or effects,
which consume processing power), but locking many tracks can have an impact on
performance, especially on laptops or other computers with slower hard disk speeds
(or on computers with nearly full hard disks).
© 2007 Apple Inc. All rights reserved.
Apple, the Apple logo, Jam Pack, Logic, and Soundtrack are trademarks of Apple Inc., registered
in the U.S. and other countries. GarageBand is a trademark of Apple Inc.
019-0956/08-2007