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Glossary
Glossary
AD converter or ADC Short for analog to digital converter; a device that converts an
analog signal to a digital signal.
AIFF Abbreviation for Audio Interchange File Format. A cross-platform file format
supported by a large number of digital audio and video editing applications. AIFF
audio can use a variety of bit depths, most commonly 16 and 24 bit.
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.
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. 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 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. It is used to record, edit, move, and
arrange the audio and MIDI regions of a project. Also used for automation recording
and playback.