Surround Mode Introduction; Dolby Digital And Dts Digital Surround; Dolby Pro Logic Ii Modes - JVC TH-A25 Instructions Manual

Surround Mode Introduction

You can use the following surround to reproduce a realistic sound
field.
• Multichannel Surround—Dolby Digital and DTS Digital Surround

• Dolby Pro Logic II modes

I Dolby Digital and DTS Digital Surround
To enjoy surround effectively, all the speakers need to be
connected and activated.
Dolby Digital*
Used to reproduce multichannel sound tracks of the software
encoded with Dolby Digital (
Dolby Digital 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 much better
sound quality with much stereo and surround effects.
When the system detects Dolby Digital signals, the
indicator lights up on the display.
DTS Digital Surround**
Used to reproduce multichannel sound tracks of the software
encoded with DTS ( or
DTS Digital Surround is another discrete 5.1 channel digital audio
format available on CD, LD, and DVD software.
Compared to Dolby Digital, audio compression rate is relatively low.
This fact allows DTS Digital Surround format to add breadth and
depth to the reproduced sounds. As a result, DTS Digital Surround
features natural, solid and clear sound.
When the system detects DTS signals, the
on the display.
* Manufactured under license from Dolby Laboratories. "Dolby," "Pro
Logic," and the double-D symbol are trademarks of Dolby
Laboratories. Confidential Unpublished Works. ©1992–1997 Dolby
Laboratories. All rights reserved.
).
).
indicator lights up
I Dolby Pro Logic II modes
*
Dolby Pro Logic II
Dolby Pro Logic II is the multichannel playback format to decode
any 2 channel (stereo) sources—either digital or analog—into 5.1
channel.
Matrix-based encoding/decoding method for Dolby Pro Logic II
makes no limitation for the cutoff frequency of the rear treble and
enables stereo rear sound compared to conventional Dolby Pro
Logic.
Dolby Pro Logic II enables to reproduce spacious sound from
original sound without adding any new sounds and tonal colorations.
Dolby Pro Logic II has four modes—Music mode, Movie mode,
Matrix mode, and Pro Logic mode:
Pro Logic II Music (PLII MUSIC)—suitable for reproduction of
any 2 channel stereo music sources. You can enjoy wide and deep
sound by using this mode.
Pro Logic II Movie (PLII MOVIE)—suitable for reproduction of
Dolby Surround encoded sources bearing the mark
You can enjoy sound field very close to the one created with discrete
5.1 channel sounds.
Pro Logic II Matrix (PLII MATRIX)—suitable for reproduction
of monaural sources.
Pro Logic (PRO LOGIC)—suitable for reproduction of sources
encoded with Dolby Surround.
• When one of Dolby Pro Logic II modes is activated, the
indicator lights up on the display.
** "DTS" and "DTS Digital Surround" are registered trademarks of
Digital Theater Systems, Inc.
.
DOLBY SURROUND
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