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502 Glossary
Audio Region Chosen area of an audio file which is registered in the Audio window for
use in the song and, can be placed on audio tracks in the Arrange window, just like a
MIDI Region can be placed on MIDI tracks. Audio Regions are aliases (or pointers) to
portions of audio files. They can be as short as a single sample, or as long as the audio
file itself. You can use all of Logic’s tools to edit Audio Regions. Editing is non
destructive on the original audio file, as the Region is only an alias of the audio file. See
also Region and MIDI Region.
audio track A track in Logic’s Arrange window that is used for playback, recording, and
editing of Audio Regions.
Audio Track Object Audio Object in the Environment’s Audio layer. Used to playback
audio tracks in Logic’s Arrange window. All data on the audio track is routed to the
Audio Object, that was assigned in the Arrange window’s Track List menu.
Audio Units (AU) Audio Units is the standard format for real-time plug-ins running on
Mac OS X. It can be used for audio effects and software instruments. The Audio Unit
format is part of the Mac OS X operating system. Once installed, Audio Unit plug-ins
can be accessed by all programs simultaneously. Logic supports all Audio Unit format
plug-ins.
Audio window Logic window used for a number of audio file handling and conversion
tasks.
Autoload Song Song with your favorite settings and preferences. It loads automatically
when you launch Logic, and serves as a starting point for your songs and projects.
automation Automation is the ability to record, edit, and play back the movements of
all knobs, controls, and buttons, including volume faders and pan, EQ, and Aux send
controls plus almost all effect and instrument plug-in parameters.
Aux Object Audio Object in the Environment’s Audio layer. Aux Objects are similar to
the Bus Objects, but are more flexible. Unlike Bus Objects Aux Objects also have Sends
of their own, allowing you to form complex signal paths.
bar In musical notation, a bar is a measure that contains a specified number of beats,
and establishes the rhythmic structure of a musical piece.
bit depth The number of bits a digital recording or digital device uses. The number of
bits in each sample determines the theoretical maximum dynamic range of the audio
data, regardless of sample rate. Also known as bit resolution, word length, or bit rate.
bit rate See bit depth
bit resolution See bit depth