Apple Logic Express 8 - Manual (Page 998)

998 Glossary
ALAC Abbreviation for Apple Lossless Audio Codec, an encoding/decoding algorithm
that delivers lossless audio compression.
alias A pointer to a MIDI region in the Arrange area. An alias does not contain any
data. It simply points to the data of the original MIDI region. You can create an alias by
Shift-Option-dragging the original MIDI region to a new location. An alias can not be
edited directly. Any change to the original region will be reflected in the alias.
aliasing A digital artefact that occurs when the sample material contains frequencies
higher than one-half of the sample rate.
amplifier Device which increases the level of a signal.
amplitude This term is used to describe the amount of a signal. If you have an audio
signal, amplitude refers to the volume of the sound, measured in decibels (dB).
amplitude peak The loudest point of an audio signal.
analog signal A description of data that consists of an endlessly varying voltage level,
that represents audio information. Analog signals must be digitized, or captured, for
use in Logic Express. Compare with digital.
anchor point The start point of the audio file that an audio region is based on. Also
see Sample Editor.
Apple Loops An audio file format, commonly used for recurring rhythmic musical
elements or elements suitable for repetition. Apple Loops contain tags and transients
that are used by Logic Express for time stretching and pitch shifting tasks. These tags
also allow you to quickly locate files by instrument, genre, or mood in the Loop
Browser.
Apple Loops Utility The Apple Loops Utility allows you to create your own Apple
Loops. To use the Apple Loops Utility, select an audio region in the Arrange and choose
Audio > Open in Apple Loops Utility.
Arrange area The primary working space of Logic Express. It is used to record, edit,
move, and arrange the audio and MIDI regions of a project. Also used for automation
recording and playback.
Arrange window The primary working window of the application. It also shows the
Arrange area (see above), and can incorporate all other working areas and editors.
ASCII Acronym for American Standard Code for Information Interchange. Standard
computer character set, allowing computers to deal with text characters. When you
type ASCII characters from the keyboard, the computer interprets them as binary so
they can be read, manipulated, stored, and retrieved. Also see scan code.
attack Start phase of a sonic event. Also part of an envelope (see envelope).