JVC TH-A75 - Manual (Page 31)

27
Surround modes
7 Reproducing theater ambience
In a movie theater, many speakers are located on the walls to
reproduce impressive multi-surround sounds, reaching you
from all directions.
With these many speakers, sound localization and sound
movement can be expressed.
Surround modes built in this system can create almost the
same surround sounds as you can feel in a real movie
theater.
Movie Theater
This system activates a variety of Surround modes and DSP (Digital Signal Processor) modes. To use Surround or DSP modes
properly, speakers required for creating each Surround and DSP mode should be activated.
At Home
7 Introducing the Surround modes
Dolby Surround
Dolby Digital EX*
Best used to reproduce multi-channel movie soundtracks of
the software encoded with Dolby Digital EX (
).
Dolby Digital EX is a newly introduced surround encoding
format as an extension of multi-channel Dolby Digital,
designed to add an extra surround channel to Dolby Digital
5.1-channel (see below). By using a matrix encoding/
decoding method, additional “surround back” channel signal
is encoded (and decoded) in both the left and right surround
channel signals.
Compared to the conventional Dolby Digital 5.1-channel, this
newly added surround back channel can reproduce more
detailed movements behind you while viewing the video
software. In addition, surround sound localization will become
more stable, so that you can enjoy a realistic surround field in
your listening room.
• When Dolby Digital EX is activated, the DIGITAL EX and
SURROUND indicators light up on the display.
Dolby Digital*
Used to reproduce multi-channel soundtracks of the software
encoded with Dolby Digital (
D I G I T A L
).
Dolby Digital 5.1-channel encoding method (so-called
discrete 5.1-channel digital audio format) records and
digitally compresses the left front channel, right front channel,
center channel, left surround channel, right surround
channel, and LFE channel signals (total 6 channels, but LFE
channel is counted as 0.1 channel, therefore, called 5.1-
channel).
Since each channel is completely independent from the other
channel signals to avoid interference, you can obtain a much
better sound quality with better stereo and surround effects.
• When Dolby Digital is activated, the DIGITAL and
SURROUND indicators light up on the display.
* Dolby Digital software can be roughly grouped into two
categories—multi-channel (up to 5.1-channel) and 2-channel
software. To enjoy surround sound while playing Dolby
Digital 2-channel software, you can use Dolby Pro Logic II.
Creating realistic sound fields
Right front
speaker
Left front
speaker
Surround back speaker
Subwoofer
Right surround
speaker
Left surround
speaker
Center speaker Center unit
STANDBY COMPACT SUPER VIDEO D I G I T A L • E X P R O L O G I C D V D D I G I T A L C I N E M A S Y S T E M PROGRESSIVE PHONES VOLUME SOURCE
NOTE: MPEG Multichannel
MPEG Multichannel signals are converted into Linear PCM
signals, then reproduced.
EN27-32.TH-A75[A]_f 02.10.11, 2:54 PM 27