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582 Glossary
controller MIDI data type. As examples; sliders, pedals or standard parameters like
volume and panning. The type of command is encoded in the first data byte, the value
in the second data byte.
Controls view All Logic 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 pull-down 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
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 is compatible with any audio
hardware that offers Core Audio drivers.
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.
cutoff frequency Frequency at which the audio signal passing through a low or
highpass filter is attenuated by 3 dB.
Cycle function A function in Logic which constantly repeats the area between the
Locator positions. To turn on Cycle mode, click the Cycle button in the Transport
window. The cycle function is useful for composing a part of a song 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.
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.
decay An envelope parameter that determines the time it takes for a signal to fall from
the maximum attack level to the sustain level. See envelope.
Deesser A signal processor that removes hissing or sibilance in audio signals.
default The preset parameter value.
delay In the Environment, an Object that can create a series of repeats. In the Arrange
window, a Region parameter which can delay or advance a selected Region by a given
number of milliseconds. Delay is also an effect process that delays the incoming audio
signal, resulting in subtle chorusing effects through to endless repeats of the signal.