10.6

1175Logic Pro User Guide
dynamic range The difference in level between the loudest and softest signals that an
audio system (or device) can reproduce. Technically, dynamic range is the difference
between the highest signal peak that can be reproduced and the amplitude of the highest
spectral component of the noise floor. It is measured in decibels. See also dB.
dynamics Refers to changes in volume, or other aspects of a piece of music, over time.
editor In Logic Pro, an area or window for editing MIDI or audio data. Logic Pro includes
the Piano Roll, Step, Event List, and Score Editors for MIDI event data, the Audio Track and
Audio File Editors for audio data, and the Drummer Editor for Drummer regions. The Event
List can also be used for region editing and positioning.
Editor view The default, graphical view of plug-in parameters. If Controls view is visible,
you can open Editor view from the View pop-up menu at the top of the plug-in window.
Compare Controls view.
effect A type of software algorithm that alters the sound of an audio signal in a specific
way. Logic Pro includes a complete set of EQ, dynamics, time-based, modulation, and
distortion effects in the Logic Pro native and AudioUnits plug-in formats.
Effect slot A panel on Logic Pro channel strips where you can insert an audio or MIDI
effect plug-in. In earlier versions of Logic Pro, an Effect slot was called an Insert slot.
envelope An element that graphically represents the variation in amplitude (or, sometimes,
spectral content) of a sound over time. An envelope, used as a controlling device,
determines how a sound starts, continues, and ends. Synthesizer envelopes usually consist
of attack, decay, sustain, and release phases (abbreviated as ADSR).
Environment A workspace in Logic Pro that graphically reflects the relationships between
hardware devices outside your computer and virtual devices within your computer. Beyond
basic input and output handling, the Environment can be used to process MIDI data in
real time, and can even be used to create processing machines, such as virtual rhythm
generators and step sequencers or complex synthesizer editors.
Environment layer A page in the Environment used to organize objects. Objects of the
same type (MIDI objects, for example) are generally placed on the same layer, making
usage easier.
Environment Mixer layer An Environment layer that shows all channel strips in a project
(except MIDI channel strips). For most purposes, you can use the Logic Pro Mixer to mix
your project.
EQ Short for equalizer. Equalizers are used to boost or cut frequencies in an audio signal.
Several EQ types are available in Logic Pro.
equalizationThe process of adjusting the relative volume (level) of different frequency
bands, using an equalizer. See EQ.
Eraser tool A tool used for deleting items. You click a selected item or items with the
Eraser tool to delete them.
event An individual MIDI command, such as a note on command. Continuous controller
movements (such as are made with a modulation wheel) produce a quick succession of
individual events—each with an absolute value.
event definition Parameters used to define the event type displayed in the lanes of the
Step Editor. See also Lane Set.