Surround Sound; Surround Modes - LG LGAV410 Owner's Manual

Surround Sound

This unit incorporates a sophisticated Digital Signal Processor
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that allows you to create optimum sound quality and sound
atmosphere in your personal Home Theater.

Surround Modes

DTS Digital Surround
DTS Digital Surround(also called simply DTS) is a multi-channel digital signal
format which can handle more amount of data than Dolby Digital, providing
better audio quality. Though the number of audio channels is 5.1 (front left,
front right, center, surround left, surround right and Low Frequency Effects)
which is same as Dolby Digital, discs bearing the "
and better signal - to - noise ratio, thanks to the lower audio compression ratio
format. It also provides wide dynamic range and better separation, resulting in
magnificent sound.
DTS - ES Extended Surround™
This is a new multi channel digital signal format which greatly
improves the 360- degree surround impression and space expres-
sion thanks to further expanded surround signals, offering high
compatibility with the conventional DTS format.
In addition to the 5.1 channels, DTS-ES Extended Surround also
offers the surround back (sometimes also referred to as "surround
center") channel for surround playback with a total of 6.1 chan-
nels. DTS-ES Extended Surround includes two signal formats with
different surround signal recording methods as follows:
DTS-ES™ Discrete 6.1
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Because the signals for 6.1 channels (including the surround back
channel) are fully independent, it is possible to achieve a sense that
the acoustic image are moving about freely among the background
sounds surrounding the listener from 360 degrees. Though maxi-
mum performance is achieved when sound tracks recorded with
this system are played using a DTS -ES decoder, when played with
a conventional DTS decoder, the surround back channel signals are
automatically downmixed to the surround left and surround right
channels so that none of the signal components are lost.
DTS - ES™Matrix 6.1
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With this format, the additional surround back channel signals
undergo matrix encoding and are input to the surround left and sur-
round right channels beforehand. During playback, they are decod-
ed to the surround left, surround right and surround back channels.
Because the bit stream format is 100% compatible with convention-
al DTS signals, the effect of the DTS-ES Matrix 6.1 format can be
achieved even with DTS 5.1 - channel signal sources. Of course, it
is possible to play DTS-ES Matrix 6.1 - channel signal sources with
a DTS 5.1 -channel decoder. When DTS-ES Discrete 6.1 or Matrix
6.1 sources are decoded with a DTS - ES decoder, the format is
automatically detected upon decoding and the optimum surround
mode is selected. However, some DTS - ES Matrix 6.1 sources
may be detected as DTS sources. In this case, the DTS - ES Matrix
mode must be selected manually to play these sources.
• In DTS - ES Discrete 6.1, DTS -ES Matrix 6.1 sources, the sur-
round back channel is monaural, but can be played through a sin-
gle(in 6.1 mode) or two surround back speakers(in 7.1 mode)
depending on the surround back speaker setting. (For details,
refer to "SETTING THE SPEAKER SETUP" on page 36.)
DTS Neo : 6™surround
This mode applies conventional 2-channel signals such as digital
PCM or analog stereo signals to the high precision digital matrix
decoder used for DTS-ES Matrix 6.1 to achieve 6.1-channel surround
playback. DTS Neo : 6 surround includes two modes for selecting the
optimum decoding for the signal source.
DTS Neo : 6 Movie
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This mode is optimum for playing movies. Decoding is performed
with emphasis on separation performance to achieve the same
atmosphere with 2-channel sources as with 6.1-channel sources.
DTS Neo : 6 Music
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This mode is suited mainly for playing music. The front left
and front right signals bypass the decoder and are played
directly so there is no loss of sound quality, and the effect of
the surround signals from the center, surround left, surround
right and surround back channels adds a natural sense of
expansion to the sound field.
" provides fat sound
"DTS", "DTS-ES Extended Surround" and "Neo : 6" are
trademarks of Digital Theater Systems,Inc.
Dolby Digital
Dolby Digital is the multi- channel digital signal format developed
by Dolby Laboratories. Discs bearing the "
recording of up to 5.1 channels of digital signals, which can repro-
duce much better sound quality, spatial expansion and dynamic
range characteristics than the previous Dolby Surround effect.
Dolby Pro Logic
Dolby Pro Logic is a specially encoded two channel surround for-
mat which consists of four channels ( front left, center, front right
and surround). Sources bearing the "
ater - like surround sound. The surround channel is monaural, but
is played through two surround speakers.
Dolby Pro Logic II surround
This mode applies conventional 2- channel signals such as digital PCM or
analog stereo signals as well as Dolby Surround signals, etc. to surround
processing to offer improvements over conventional Dolby Pro Logic cir-
cuits. Dolby Pro Logic II surround includes two modes as follows:
Dolby Pro Logic II MOVIE
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When enjoying movies, this mode allows you to further
enhance the cinematic quality by adding processing that
emphasizes the sounds of the action special effects.
Dolby Pro Logic II MUSIC
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When listening to music, this mode allows you to further
enhance the sound quality by adding processing that empha-
sizes the musical effects.
Dolby Virtual
This mode employs sophisticated digital processing to create the illusion
of "phantom" speakers, this mode allows you to experience surround
sound effects from the Dolby Digital, Dolby Surround or 2-channel(record-
ed in digital PCM or analog stereo) sources, through just a single pair of
front speakers.
Manufactured under license from Dolby Laboratories. "Dolby", "Pro Logic",
and the double - D symbol are trademarks of Dolby Laboratories.
MPEG Multichannel
This mode is a surround system which faithfully reproduces the ambi-
ence and dynamics of movie soundtracks and music alike. Though
the number of audio channels is 5.1 which is same as Dolby Digital,
discs bearing the "
individual sounds to the correct and stable position in the sound
stage.
Extra Surround 6.1/7.1
This mode extracts the surround back(sometimes also referred to as
"surround center") signals from the surround left and surround right
signals and reproduces it as well as the original multichannel signals
during playback of multi-channel program sources recorded in DTS,
Dolby Digital, etc.
" includes the
DOLBY
D I G I T A L
" provide the the-
DOLBY SURROUND
" provides much better at locating
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