System information

Signal-to-Noise Ratio
The signal-to-noise ratio (SNR) is a measurement of the difference between a recorded signal and noise
levels. A high SNR is always the goal.
The maximum signal-to-noise ratio of digital audio is determined by the number of bits per sample. In 16-
bit audio, the signal to noise ratio is 96 dB while in 8-bit audio its 48 dB. However, in practice this SNR is
never achieved, especially when using low-end electronics.
Small Computer Systems Interface (SCSI)
A standard interface protocol for connecting devices to your computer. The SCSI bus can accept up to
seven devices at a time including CD ROM drives, hard drives and samplers.
Society of Motion Picture and Television Engineers (SMPTE)
SMPTE timecode is used to synchronize time between devices. The timecode is calculated in
Hours:Minutes:Second:Frames, where Frames are fractions of a second based on the frame rate. Frame
rates for SMPTE timecode are 24, 25, 29.97 and 30 frames per second.
Sound Card
The sound card is the audio interface between your computer and the outside world. It is responsible for
converting analog signals to digital and vice versa. Vegas Pro will work with any Windows-compatible
sound card.
Stereo
Mixer implementation that includes two discrete channels
Surround
5.1 surround is a mixer implementation that includes six discrete channels
T
Telecine
The process of creating 30 fps video (television) from 24 fps film (cinema). See "Inverse Telecine (IVTC) "
on page 640 and "Pulldown" on page 644.
Tempo
Tempo is the rhythmic rate of a musical composition, usually specified in beats per minute (BPM).
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