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APPENDIX B GLOSSARY
385
Quantization Noise
A result of describing an analog signal in discrete digital terms (see Quantization). This noise is most easily
heard in low resolution digital sounds that have low bit depths and is similar to a hiss while the audio is
playing. It becomes more apparent when the signal is at low levels, such as when doing a fade out. See also
Dithering.
Quantizing (MIDI)
The correction of rhythms to align with selected note lengths or beats in a MIDI sequence.
Quantizing (Video)
Limiting all editing to frame boundaries. For more information, see Quantizing to frames on page 125.
Red Book specification
The Red Book defines the specifications of every audio compact disc in every music store throughout the
world. Red Book specifications define not only the information within the disc (digital audio recorded at
44.1 kHz), but also the disc size itself and the way in which the audio is arranged.
Region
A subsection of a sound file denoted by a start and end point. You can define any number of regions in a
sound file.
Rendering
The process by which Vegas software saves the project to a specific file format like AVI or WMA.
Resample
The act of recalculating samples in a sound file at a different rate than the file was originally recorded. If an
audio file is resampled at a lower rate, Vegas software decreases sample points. As a result, the file size and
the frequency range are reduced. When resampling to a higher sample rate, Vegas software interpolates extra
sample points in the sound file. This increases the size of the sound file but does not increase the quality.
When down-sampling, one must be aware of aliasing (see Aliasing). Vegas software automatically resamples
all audio to the project’s sample rate.
Ripple; Ripple Editing
A type of editing where events are moved out of the way to make room for newly inserted events as opposed
to simply being overwritten. When a one minute event is ripple inserted into a project, the duration of a
project lengthens by one minute. If ripple editing is turned off, the same operation would not affect the
overall duration of the project.
Roll
Originally, a conventional studio typically had two source decks that were used to play back video to a final
destination or output deck. These two source decks were commonly referred to as the A and B rolls. In Vegas
software, a video track can be configured to display an A and a B roll, which appear as sub-tracks. The
concept is extended further in Vegas software to include a transition roll between the A and B rolls. For more
information, see Understanding track layers on page 270.
Ruler
The ruler is the area above the tracks that shows the horizontal axis units.