User guide

1004 Glossary
Controls view All Logic Express plug-ins (and Audio Units) offer a non-graphical
alternative to the Editor views of effect and instrument parameters. The Controls view is
accessed via the Controls item in the plug-in header’s View menu at the top of each
plug-in window. This view is provided to allow access to additional parameters and to
use less onscreen space.
Core Audio Standardized audio driver system for all Macintosh computers running
Mac OS X version 10.2 or higher. Core Audio is an integral part of Mac OS X, allowing
access to all audio interfaces that are Core Audio compatible. Logic Express is
compatible with any audio hardware that offers Core Audio drivers/support.
Core MIDI Standardized MIDI driver system for all Macintosh computers running
Mac OS X version 10.2 or higher. Core MIDI is an integral part of Mac OS X, allowing the
connection of all MIDI devices that are Core MIDI compatible. Logic Express is
compatible with any MIDI hardware that offers Core Audio drivers/support.
count-in Beats heard prior to the start of a recording (or playback).
cueing Monitoring (hearing playback) while fast-forwarding or rewinding.
cutoff frequency Frequency at which the audio signal passing through a low or
highpass filter is attenuated by 3 dB.
cutting The act of reducing a level, or frequency, when using EQ or other filters. Also
used to describe physically dividing and removing sections of files, regions, and so on
(see boosting and attenuation).
Cycle function A function in Logic Express which constantly repeats the area between
the locator positions. To turn on Cycle mode, click the Cycle button in the Transport.
The Cycle function is useful for composing a part of a project or editing events, as
examples. The cycle area is shown as a green stripe in the top part of the Bar ruler.
DA converter or DAC Short for digital/analog converter; a device that changes an
analog signal into a digital signal.
data bytes These define the content of a MIDI message. The first data byte represents
the note, or controller number; and the second the velocity, or controller value.
DAW Acronym for Digital Audio Workstation. A computer used for recording, mixing,
and producing audio files.
dB Abbreviation for decibels, a unit of measurement that describes the relationships of
voltage levels, intensity, or power, particularly in audio systems.
DC offset An error that can result in direct current (DC) being layered over the audio
signal, resulting in a vertical shift in the waveform position shown in the Sample Editor.