User Guide

Glossary 643
plug-in Software application that enhances the functionality of the main program (in
this case, one of your Logic Studio applications).
plug-in window A window that opens when a plug-in is inserted, or the Insert/
Instrument slot is double-clicked. Allows you to interact with the plug-in parameters.
post fader Sends in analog mixers are positioned either before (pre) or after (post) the
fader. Post fader means positioned after the volume fader in the signal flow, with the
level of a signal going to the send changing along with the fader movements.
pre fader Sends in analog mixers are positioned either before (pre) or after (post) the
fader. Pre fader means positioned before the volume fader in the signal flow, so the
level of a signal routed pre-fader to a send remains constant, regardless of any fader
movements.
preset Set of plug-in parameter values that can be loaded, saved, copied, or pasted via
the Settings menu in the plug-in window header. See setting and Settings menu.
pressure See aftertouch
PWM Pulse Width Modulation. Synthesizers often feature this facility, where a square
waveform is deformed by adjusting its pulse width. A square waveform usually sounds
hollow, and woody, whereas a pulse width modulated square wave sounds more reedy
and nasal.
Q factor A term generally associated with equalizers. The Q factor is the quality factor
of the equalization, and is used to select a narrower or broader frequency range within
the overall sonic spectrum of the incoming signal.
quantization Time-correction of note positions by moving them to the nearest point
on a selectable grid.
QuickTime QuickTime is an Apple cross-platform standard for digitized, data-
compressed video playback and encoding.
RAM Abbreviation for random-access memory. Computer memory capacity, measured
in megabytes (MB), determines the amount of data the computer can process and
temporarily store at any given moment.
recording The act of capturing a performance as audio or MIDI data. The term is also
commonly used when referring to the actual data (in Logic Pro, this is delineated by
the use of the words region or file to make things clearer when discussing recordings).
ReCycle ReCycle is the name of an application from software manufacturer
Propellerhead, which mainly serves as an editing and production tool for loops
(repeated audio samples). ReCycle uses specific file formats (.rex) which can be
imported by Logic Pro.