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GLOSSARY
94
■ Dolby Digital
Dolby Digital is a digital surround sound system that gives
you completely independent multi-channel audio. It
provides 5 full-range audio channels; 3 front channels
(left, center, and right), and 2 surround stereo channels.
An additional channel especially for bass effects, called
LFE (low frequency effect) is also provided giving the
system a total of 5.1-channels (LFE is counted as a 0.1
channel). By using 2-channel stereo for the surround
speakers, more accurate moving sound effects and
surround sound environment are possible than with Dolby
Surround. The wide dynamic range (maximum to
minimum volume) reproduced by the 5 full-range
channels and the precise sound orientation generated
using digital sound processing provide listeners with a
previously unheard of excitement and realism.
■ Dolby Digital EX
Dolby Digital EX creates 6 full-bandwidth output
channels from 5.1-channel sources. This is done by using
a matrix decoder that derives 3 surround channels from the
2 in the original recording. For best results, Dolby Digital
EX should be used with movie sound tracks recorded with
Dolby Digital Surround EX. With this additional channel,
you can experience more dynamic and realistic moving
sound especially with scenes that have “flyover” and “fly-
around” effects.
■ Dolby Pro Logic II
Dolby Pro Logic II is an improved technique used to
decode vast numbers of existing Dolby Surround software.
This new technology enables a 5-channel playback with 2
front left and right channels, 1 center channel, and 2
surround left and right channels (instead of only 1
surround channel for conventional Pro Logic technology).
Music and Game modes are also available for 2-channel
sources in addition to the Movie mode.
■ Dolby Pro Logic IIx
Dolby Pro Logic IIx is a new technology enabling 6.1 or
7.1 multi-channel playback from 2-channel or multi-
channel sources. There is a Music mode for music, a
Movie mode for movies and a Game mode for games.
■ Dolby Surround
Dolby Surround uses a 4 channel analog recording system
to reproduce realistic and dynamic sound effects: 2 front
left and right channels (stereo), a center channel for dialog
(monaural), and a surround channel for special sound
effects (monaural). The surround channel reproduces
sound within a narrow frequency range.
Dolby Surround is widely used with nearly all video tapes
and laser discs, and in many TV and cable broadcasts as
well. The Dolby Pro Logic decoder built into this unit
employs a digital signal processing system that
automatically stabilizes the volume on each channel to
enhance moving sound effects and directionality.
■ DTS 96/24
DTS 96/24 offers an unprecedented level of audio quality
for multi-channel sound on DVD-Video, and is fully
backward-compatible with all DTS decoders. “96” refers
to a 96 kHz sampling rate (compared to the typical 48 kHz
sampling rate). “24” refers to 24-bit word length. DTS 96/
24 offers sound quality transparent to the original 96/24
master, and 96/24 5.1-channel sound with full-quality full-
motion video for music programs and motion picture
soundtracks on DVD-video.
■ DTS (Digital Theater Systems)
Digital Surround
DTS digital surround was developed to replace the analog
soundtracks of movies with a 6-channel digital sound
track, and is now rapidly gaining popularity in movie
theaters around the world. Digital Theater Systems Inc.
has developed a home theater system so that you can enjoy
the depth of sound and natural spatial representation of
DTS digital surround in your home. This system produces
practically distortion-free 6-channel sound (technically,
left, right and center channels, 2 surround channels, plus
an LFE 0.1 channel as a subwoofer, for a total of 5.1-
channels). This unit incorporates a DTS-ES decoder that
enables 6.1- channel reproduction by adding a surround
back channel to the existing 5.1-channel format.
■ Neo:6
Neo:6 decodes conventional 2-channel sources for 6
channel playback by. It enables playback with the full-
range channels with higher separation comparable to
digital discrete signal playback. Two modes are available;
“Music mode” for playing music sources and “Cinema
mode” for movies.
GLOSSARY
Audio formats