Operation Manual

ADOBE AUDITION 3.0
User Guide
278
resample To convert a sound file to a different sample rate and bit depth.
reverb The reverberant sound produced by an acoustic space, such as a room or concert hall. Reverb consists of
dense, discrete echoes that arrive at the ear so rapidly that the brain can’t separate them. Adobe Audition offers three
reverb effects: Studio Reverb, Reverb, and Full Reverb.
ReWire A technology for synchronizing audio applications created by Propellerhead Software.
RMS (Root-mean-square) A mathematical formula used to determine the average amplitude of an audio selection.
RMS amplitude reflects perceived loudness better than peak amplitude.
S
S/N ratio Signal-to-noise ratio describes the difference between the highest signal level before distortion and the
average level of the noise floor. In most analog systems, such as microphone preamps, the S/N ratio is around 92 dB.
sample A digital snapshot of an audio waveform at a particular point in time. In digital audio, a series of numeric
samples reproduces an entire waveform, with higher sample rates producing increased frequency response. (Note
that musical samplers use the term sample to describe a digital recording, rather than a digital snapshot.)
sample rate The number of samples per second. Higher sample rates produce increased frequency response but
require more disk space. To reproduce a given audio frequency, the sample rate must be at least double that
frequency. (See “Nyquist frequency” on page 277.)
sampler A musical device that records and plays digital sounds (known as samples in this context) and lets you edit
and store those sounds.
sequencer A programmable piece of software or hardware that can record and play a sequence of musical events,
such as samples, pitches, and rests. Most modern sequencers are MIDI-based. (See “MIDI” on page 276.)
session A multitrack project in Adobe Audition. Session files are stored with the extension .ses and contain details
such as mixing and effects settings. Session files don’t contain audio data; instead they contain pathnames pointing
to the sound files used in the session.
SMPTE timecode (Society of Motion Picture and Television Engineers timecode) A timing reference used to
synchronize two devices. SMPTE timecode is divided into hours, minutes, seconds, and frames.
sound card A hardware device that lets your computer play and record audio.
sound wave A wave of air molecules. Humans can hear sound waves with frequencies of 20 to 20,000 Hz.
spectral editing Editing audio using a display that visually represents audio frequencies. In spectral displays, bass
frequenciesappearatthebottom,trebleatthetop.Volumeisrepresentedbycolorintensity.InAdobeAudition,you
perform spectral editing to remove noise or process specific frequency ranges.
stereo A signal with a left and right channel, allowing for spatial placement of sounds.
stripe To copy SMPTE timecode to a single track of a multitrack tape so remaining tracks can be synchronized with
other devices.
T
tempo The rhythmic speed of music, normally measured in beats per minute. (See “beats per minute (bpm)” on
page 273.)
timecode An audio or digital signal that synchronizes time between multiple devices. The most common forms are
SMPTE and MIDI timecode.