10.6

1174Logic Pro User Guide
delay (1) In the main window, a region parameter that lets you move a selected region
ahead or behind the beat by a given number of milliseconds. (2) An effect that delays the
incoming audio signal, typically resulting in a sense of audio space in which the signal is
taking place. (3) In the Environment, an object that can create a series of repeats.
destructive A type of audio processing in which the actual data of an audio file is
changed, as opposed to just editing peripheral or playback parameters. Edits in the Audio
File Editor are destructive, while those in the Audio Track Editor are non-destructive. See
also Audio File Editor.
DFS Abbreviation for Digital Full Scale. Sometimes expressed as 0dBDFS. This value—0
dB, as shown on the Logic Pro channel strip level meters—is the maximum theoretical
level that a digital signal can reach before clipping and other types of distortion may be
introduced.
digital A description of data that is stored or transmitted as a sequence of ones and
zeros. Most commonly, digital data refers to binary data represented by electronic or
electromagnetic signals. All files used in Logic Pro are digital. Compare analog.
Display Level button A button (located in the upper-left corner of many windows) that
takes you to the next higher display level. For example, if you’re viewing events of a MIDI
region inside a folder and you click the Display Level button, you’ll move to the MIDI region
in the parent folder. A second click switches the display to the folder itself.
distortion The effect that occurs when the limit of what can be accurately reproduced in a
digital signal is surpassed, resulting in a sharp, crackling sound.
division value An adjustable value (shown in notes) for the grid used in displays and
operations. The division (marked div) is the third number displayed in the control bar’s
Position display.
Drag pop-up menu A pop-up menu found in the menu bars of linear editing windows. It
determines the behavior of regions or events when dragged to an overlapping position.
driver A software program that enables various pieces of hardware and software to be
recognized by computer apps. If the proper driver is not correctly installed for your audio
hardware, your computer may not recognize or work properly with it. See also Devices
pane.
Drummer A feature in Logic Pro that allows you to add a virtual drummer to your project,
using a Drummer track. You edit the drummer’s performance in the Drummer Editor.
Drummer Editor The editor you use to modify a virtual drummer’s playing style by
choosing presets and adjusting individual settings, including kit piece pattern variations
and fill settings.
Drummer region A realistic drum performance you can edit using various settings in the
Drummer Editor.
Drummer track A track in the Tracks area that is used for the playback and editing of
Drummer regions. You can only have one Drummer track per project.
DSP (digital signal processing) In Logic Pro, the mathematical processing of digital
information to modify a signal. For example, the Effect slot on channel strips assigns
DSP effects—such as dynamic compression and delay—to a channel signal. Even simple
operations such as changing volume and pan are DSP calculations.