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53
En
Glossary
Analog audio
Direct representation of sound by an
electrical signal. See also
Digital audio
.
Aspect ratio
The width of a TV screen relative to its
height. Conventional TVs are 4:3;
widescreen models are 16:9.
Bonus Group
(DVD-Audio
only)
An ‘extra’ group on some DVD-Audio
discs that requires a key number to
access.
Browsable
pictures
(DVD-Audio
only)
A feature of some DVD-Audio discs in
which the user can browse still pictures
recorded on the disc as the audio is
played. See also
Slideshow
.
Digital audio
Indirect representation of sound using
numbers. See also
Sampling frequency
and
Analog audio
.
Dolby
Digital
*1
1
A multi-channel audio encoding system
developed by Dolby Laboratories that
enables far more audio to be stored on a
disc than PCM encoding. See also
PCM
(Pulse Code Modulation)
.
DRM
DRM (Digital Rights Management) copy
protection is a technology designed to
prevent unauthorized copying by
restricting playback, etc. of material on
devices other the PC (or other WMA
recording equipment) used to record it.
For detailed information, please see the
instruction manuals or help files that
came with your PC (or other WMA
recording equipment) and/or software.
DTS
*2
A multi-channel audio encoding system
developed by Digital Theater Systems
that enables far more audio to be stored
on a disc than PCM encoding. See also
PCM (Pulse Code Modulation)
.
EXIF
(Exchangeabl
e Image File)
A file format developed by Fuji Photo
Film for digital still cameras. Digital
cameras from various manuafcturers
use this compressed file format which
carries date, time and thumbnail
information, as well as the picture data.