JVC XV-THV70R manual Creating the realistic sound fields, 7Dolby Surround, 7DTS Digital Surround

Creating the realistic sound fields

You can use the following Surround modes to reproduce a realistic sound field.

7Dolby Surround

•Dolby Pro Logic II

•Dolby Digital

7DTS Digital Surround

7DAP modes

7All Channel Stereo

7Dolby Surround

Dolby Pro Logic II*

Dolby Pro Logic II has newly developed multichannel playback format to decode all 2 channel sources—stereo source and Dolby Surround encoded source—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 two modes—Movie mode and Music mode:

Pro Logic II Movie (PL II MOVIE)—suitable for reproduction of Dolby Surround encoded sources bearing the mark

DOLBY SURROUND . You can enjoy soundfield very close to the one created with discrete 5.1 channel sounds.

Pro Logic II Music (PL II MUSIC)—suitable for reproduction of any 2 channel stereo music sources. You can enjoy wide and deep sound by using this mode.

•When Dolby Pro Logic II is activated, the PRO LOGIC II indicator lights up on the display window.

Dolby Digital*

Used to reproduce multichannel soundtracks of the software

encoded with Dolby Digital ().

Dolby Digital 5.1 ch (DOLBY D) encoding method (so-called discrete multichannel digital audio format) records and digitally compresses the left front channel, right front channel, center channel, left rear channel, right rear channel, and LFE channel signals.

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.

NOTE:

Dolby Digital software can be roughly grouped into two categories— multichannel (up to “5.1” channel) and 2 channel software. To enjoy surround sounds while playing Dolby Digital 2 ch software, you can use Dolby Pro Logic II.

7DTS Digital Surround**

Used to reproduce multichannel soundtracks of the software

encoded with DTS Digital Surround ( ).

DTS Digital Surround (DTS SURR) is another discrete multichannel digital audio format available on CD, LD, and DVD software.

Compared to Dolby Digital, audio compression ratio 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.

7Digital signal format indicators on the display window

DIGITAL : Lights up when Dolby Digital signals come in.

: Lights up when DTS Digital (Surround) signals come in.

No indication: No digital signal indicator lights up when Linear PCM signals or analog signals come in.

NOTE: MPEG Multichannel

MPEG Multichannel signals are converted into Linear PCM signals, then reproduced.

Typical Multichannel (5.1 ch) reproduction

Left front	Right front
speaker	speaker

Center

speaker

Subwoofer

Left rear	Right rear
speaker	speaker

*Manufactured under license from Dolby Laboratories. “Dolby,” “Pro Logic,” and the double-D symbol are trademarks of Dolby Laboratories.

**Manufactured under license from Digital Theater Systems, Inc. US Pat. No. 5,451,942 and other world-wide patents issued and pending. “DTS” and “DTS Digital Surround” are trademarks of Digital Theater Systems, Inc. Copyright 1996 Digital Theater Systems, Inc. All rights reserved.

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