Filter
Top Products
384
GLOSSARY APPENDIX B
A preset calls up a bulk setting of a function in Vegas software. If you like the way you tweaked that EQ, but
do not want to have to spend the time getting it back for later use, save it as a preset. Presets appear in the
top of plug-in windows in Vegas software.
Pulldown
In telecine conversion, fields are added to convert 24 fps film to 30 fps video.
In 2-3 pulldown, for example, the first frame is scanned into two fields, the second frame is scanned into
three fields, and so on for the duration of the film. 2-3 pulldown is the standard for NTSC broadcasts of 24p
material. Use 2-3 pulldown when printing to tape, but not when you intend to use the rendered video in
Vegas software. Removing 2-3 pulldown is inefficient because the pulldown fields that are created for frame
3 span two frames:
Use 2-3-3-2 pulldown when you plan to use your rendered video in Vegas software as source media. When
removing 2-3-3-2 pulldown, Vegas software simply discards frame three and merges the pulldown fields in
the remaining frames:
Pulse Code Modulation (PCM)
PCM is the most common direct binary representation of a level of an uncompressed audio signal. This
method of coding yields the highest fidelity possible when using digital storage.
Punch-In
Punching-in during recording means automatically starting and stopping recording at user-specified times. In
Vegas software, shorter events can be punched into longer ones.
Quadraphonic
A mixing implementation that allows for four discrete audio channels. These are usually routed to two front
speakers and two back speakers to create immersive audio mixes.
Quantization (Audio)
The process by which measurements are rounded to discrete values. Specifically with respect to audio,
quantization is a function of the analog-to-digital conversion process. The continuous variation of the
voltages of a analog audio signal are quantized to discrete amplitude values represented by digital, binary
numbers. The number of bits available to describe these values determines the resolution or accuracy of
quantization. For example, if you have 8-bit analog-to-digital converters, the varying analog voltage must be
quantized to 1 of 256 discrete values; a 16-bit converter has 65,536 values. Quantization is to level as
sampling rate is to time.
24 fps film (top) and resulting NTSC video with 2-3 pulldown fields (bottom)
24 fps film (top) and resulting NTSC video with 2-3-2-2 pulldown fields (bottom)