Apple Logic (1.1) - Manual (Page 111)

111
Glossar
y Glossary
AD converter or ADC Short for analog/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 video and audio editing applications. AIFF
audio can use a variety of bit depths, but the two most commonly used are 16 bit and
24 bit.
alias A pointer to a MIDI Region in the Arrange window. 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.
amplifier Device which controls 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 sound’s volume, measured in decibels (dB).
analog signal A description of data that consists of a constantly 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 in which recurring rhythmic musical elements or elements
suitable for repetition are recorded. Apple Loops have tags and transients which allow
Logic to perform time stretching and pitch shifting. Theses tags also allow you to
quickly locate files by instrument, genre or mood in the Loop Browser that is used to
import of Apple Loops in Logic. To open the Loop Browser, choose Audio > Loop
Browser.
Arrange window The heart of Logic. The primary working window of the program
where Audio and MIDI Regions are edited and moved to create a song arrangement.
attenuate To lower an audio signal’s level.