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Viz Engine Administrator’s Guide
22 Glossary
This section describes words and acronyms that are used throughout the
documentation:
5.1
Delivers five audio channels and 1 Low-frequency Effect (LFE) channel from a 6 channel
source.
6DoF
Six degrees of freedom (6DoF) is used in interactive scenes to move and rotate objects
in 3D on a defined grid.
7.1
Delivers seven audio channels and one Low-frequency Effect (LFE) channel from an 8
channel source.
AES
Audio Engineering Society (AES). Also known for the digital audio standard frequently
called AES/ EBU , officially known as AES3, is used for carrying digital audio signals
between various devices; hence, the term AES/EBU connectors.
AGP
Accelerated Graphics Port (AGP) is a high-speed point-to-point channel for attaching a
graphics card to a computer’s motherboard, primarily to assist in the acceleration of 3D
computer graphics.
Anamorphic widescreen
Anamorphic widescreen is a videographic technique utilizing rectangular (wide) pixels
to store a widescreen image to standard 4:3 aspect ratio.
ANC data
Ancillary data refers to a means which by non-video information (such as audio, other
forms of essence, and metadata) may be embedded within the serial digital interface
(SDI). Ancillary data packets are commonly divided into two types, depending on where
they are located.
Ancillary packets located in the horizontal blanking region (after EAV but before SAV),
regardless of line, are known as horizontal ancillary data, or HANC. HANC is commonly
used for higher-bandwidth data, and/or for things that need to be synchronized to a
particular line; the most common type of HANC is embedded audio.
Ancillary packets located in the vertical blanking region, and after SAV but before
EAV, are known as vertical ancillary data, or VANC. VANC is commonly used for lowbandwidth data, or for things that only need be updated on a per-field or per-frame
rate. Closed caption data and VPID are generally stored as VANC.
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