Adobe AUDITION 1.5 User Manual page 295

ADOBE AUDITION 1.5 287
User Guide
S
Signal-to-noise ratio describes the difference between the highest signal level
S/N ratio
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.
A digital snapshot of an audio waveform at a particular point in time. In digital
Sample
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.)
The number of samples per second. Higher sample rates produce increased
Sample rate
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 284.)
A musical device that records and plays digital sounds (known as samples in this
Sampler
context) and lets you edit and store those sounds.
A programmable electronic device that can record and play a sequence of
Sequencer
musical events, such as samples, pitches, and rests. Most modern sequencers are MIDI-
based. (See "MIDI" on page 282.)
A multitrack project in Adobe Audition. Session files are stored with the
Session
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.
See "64-bit doubles (RAW) (.dbl)" on page 232.
64-bit Doubles
(Society of Motion Picture and Television Engineers timecode) A
SMPTE timecode
timing reference used to synchronize two devices. SMPTE timecode is divided into hours,
minutes, seconds, and frames.
A hardware device that lets your computer play and record audio.
Sound card
A wave of air molecules. Humans can hear sound waves with frequencies of
Sound wave
20 to 20,000 Hz.
A signal with a left and right channel, allowing for spatial placement of sounds.
Stereo
To copy SMPTE timecode to a single track of a multitrack tape so remaining tracks
Stripe
can be synchronized with other devices.