Adobe AUDITION 1.5 User Manual

Page 286

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Glossary

Clip

A visual representation of individual audio, video, or MIDI files in Adobe Audition’s

Multitrack View.

Clipping

In digital audio, distortion that occurs when the amplitude of a signal exceeds

the maximum level for the current bit resolution (for example, 256 in 8-bit audio).
Visually, clipped audio produces broad flat areas at the top of a waveform. If you
experience clipping, lower the recording input or the source output levels.

CODEC

(Compressor/Decompressor) An abbreviation often used to describe multi-

media compression schemes used by ACM, MPEG, QuickTime, AVI, and the combined
A-D-D-A modules on some sound cards.

Compressor

Reduces dynamic range by lowering amplitude when an audio signal rises

above a specified threshold. For example, compressors can be used to eliminate variations
in the level of an electric bass, providing an even, solid bass line. Compressors can also
compensate for variations in level produced by a vocalist who moves frequently or has an
erratic volume.

Crossfade

A fade from one audio track to another.

Crosstalk

Undesired leakage of audio from one track to another, a common problem with

analog tape. Crosstalk is impossible in Adobe Audition because each track is stored as a
separate digital audio file.

Cue List

A list of time locations defined in an audio file. A cue can be either a point that

specifies a time position or a range that specifies a selection. In Adobe Audition, you can
define and save an unlimited number of cues for later recall or for assembly in the Play List
window. (See “Play List” on page 285.)

D

DAC

(Digital-to-Analog Converter) The hardware responsible for converting a digital

audio or video signal into an analog signal that you can play through amplifiers and
speakers.

DAT

(Digital Audio Tape) A standard two-track digital audio tape format. DAT tapes are

sampled at 16 and 24 bits, and 32,000, 44,100, and 48,000 samples per second. (The latter
is often described as DAT quality).

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