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GLOSSARY
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Digital audio – Audio in digital form. Digital audio con-
verts analog sound into a digital signal encoded as bits
of information.
Dolby Digital – A means of encoding multi-channel
audio, developed by Dolby Laboratories and accepted
as an international standard.
Down-conversion – The conversion from a
higher-resolution input signal number to a lower one.
– The logo representing Dolby Digital.
DTS – An abbreviation for Digital Theater Systems. DTS
encoding provides a type of multi-channel surround
sound format used on certain CDs and many DVDs.
– The logo representing DTS.
DVD – An abbreviation most commonly known to mean
digital video disc or digital versatile disc. A DVD looks
like a CD but contains high-quality video and
multi-channel audio for movies.
DVD-R, DVD+R, DVD-RW, DVD+RW – Abbreviations
for Recordable (R) and ReWriteable (RW) Digital Video
(or Versatile) Disc (DVD). Data can be added to a DVD-
R or +R once only, and to a DVD-RW or +RW more than
once.
DVD-ROM – The abbreviation for Read Only Memory
(ROM) on a Digital Video (or Versatile) Disc (DVD), which
allows no data to be added.
DVD video – A standard for storing and reproducing
audio and video on DVD-ROM discs, based on MPEG
video, Dolby Digital audio, and other proprietary data
formats.
DVR – An abbreviation for Digital Video Recording,
sometimes used interchangeably with PVR, for
Personal Video Recording. A DVR uses a hard drive, an
electronic program guide, and internal processing to
drastically simplify programmed recording and
playback of recorded programs.
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