Apple GarageBand Jam Pack: Voices - Manual (Page 8)

8
Some of the Apple Loops in Voices are intended to be used in a larger musical mix.
These loops may start on a different beat than the first beat of the measure, and so
they may be silent on the beat that aligns with the left edge of the loop when you add
them to the timeline. You can move them in the timeline so that they fit together most
effectively with the other loops and recordings in your project (in musical terms, “in the
pocket”).
The Apple Loops in Voices are recorded at an extremely high level of sound quality, and
make use of the time- and pitch-shifting technology built into GarageBand, Logic, and
Soundtrack Pro. However, because our ears are so attuned to the subtleties of the
human voice, audio distortion and artifacts may be more noticeable when using the
Voices loops in a key or tempo that is not close to their original key and tempo. It is
recommended that you check the key and tempo of the loops in the loop browser, and
use loops only in nearby keys and in tempos close to the original tempo.
Performance Tips
The Software Instruments and Apple Loops in Voices represent the state of the art in
sample-based digital audio technology. They are designed to provide an extremely
high level of sound quality while using your computer’s processor, memory, and hard
disk resources as efficiently as possible. By their nature, however, high-quality samples
like the ones in Voices require a certain level of processor power, available memory, and
hard disk speed for optimal performance.
This document provides tips on how to get the most out of the Voices instruments and
loops, and tells you what aspects of your computer setup might produce the greatest
effects on performance, depending on how you use Voices.
Add Memory
In general, Real Instrument loops (blue) are extremely efficient and require the least
amount of resources from your computer. The Software Instruments and Software
Instrument loops (green) in Voices require more processing power, as the sound is
being processed in real time. This is why Software Instruments and Software
Instrument loops require a computer with at least a G4 processor, and why Apple
recommends you have at least 1 GB of RAM to use Voices.
The simplest way to increase performance—that is, to be able to play songs with more
tracks and with more Software Instruments—is to install more RAM in your computer.
For GarageBand and Logic users, adding RAM is an affordable investment that will
improve the performance of the high-quality instruments in Voices.