User guide

Glossary 999
attenuate The act of lowering the level of an audio signal (see boosting and cutting).
Audio Bin Window (or tab in the Media area of the Arrange window) used for project
audio file and region management, and conversion, tasks. See Media area.
audio file Any digital recording of sound, stored on your hard drive. You can store
audio files in the AIFF, WAV, Sound Designer II (SDII), and CAF formats in Logic Express.
All recorded and bounced WAV files are in Broadcast Wave format.
audio interface Device used to get sound into and out of your computer. An audio
interface converts digital audio data, sent from your computer, into analog signals that
speakers can broadcast. In the other direction, an audio interface converts analog
signals (such as a vocal performance) into digital audio data that can be understood by
your computer.
Audio MIDI Setup (AMS) The Audio MIDI Setup (AMS) utility is used to configure the
audio and MIDI input and output devices connected to your computer. Logic Express
uses the settings defined in the Audio MIDI Setup utility, which can be found in the
Applications/Utilities folder.
audio region Chosen area of an audio file which can be placed on audio tracks in the
Arrange, 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 the
full length of the underlying audio file. Logic Express allows you to edit audio regions
without affecting the original audio file. Also see region and MIDI region.
audio track A track in the Arrange window that is used for playback, recording, and
editing of audio regions. It is routed to an audio channel in the Mixer.
audio channel strip Channel strip in the Mixer, used as a target for audio tracks in the
Arrange. All data on the audio track is automatically routed to the audio channel strip
that was assigned in the Arrange track list.
Audio Units (AU) Audio Units is the standard Mac OS X format for real time plug-ins. It
can be used for audio effects, software instruments, and Generators. The Audio Unit
format is incorporated into the operating system, and installed Audio Unit plug-ins can
be simultaneously accessed by all applicable programs. Logic Express supports all
Audio Unit format plug-ins.
Auto Track Zoom Function in the View menu that automatically enlarges the currently
selected track.
Autopunch button Button (with the up/down arrows) in the Transport, used to
activate the Autopunch function.