JVC KD-AV7010 Surround modes, Dolby Digital 5.1 CH, DTS Digital Surround, Dolby Pro Logic

ENGLISH

Introducing surround/DSP mode

Surround modes

Dolby Digital

Dolby Digital is a digital signal compression method, developed by Dolby Laboratories, and enables multi-channel encoding and decoding (1ch up to 5.1ch).

Dolby Digital 5.1 CH

Dolby Digital 5.1 CH encoding method 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 the LFE channel is counted as 0.1 channel. Therefore, called 5.1 channel).

Dolby Digital enables stereo surround sounds, and sets the cutoff frequency of the surround treble at 20 kHz, compared to 7 kHz for Dolby Pro Logic. As such, the sound movement and “being there” feeling are enhanced much more than Dolby Pro Logic.

DTS

DTS is another digital signal compression method, developed by Digital Theater Systems, Inc., and enables multi-channel encoding and decoding (1ch up to 6.1ch).

DTS Digital Surround

DTS Digital Surround is another discrete

5.1-channel digital audio format available on CD, LD, and DVD software.

Compared to Dolby Digital, the DTS Digital Surround format has a lower audio compression rate which enables it to add breadth and depth to the sounds reproduced. As such, DTS Digital Surround features natural, solid, and clear sound.

Dolby Pro Logic II

It is a multi-channel playback format to convert 2-channel software into 5-channel (plus subwoofer). The matrix-based conversion method used for Dolby Pro Logic II makes no limitation for the cutoff frequency of the surround treble and enables stereo surround sound.

•This unit provides two types of Dolby Pro Logic II modes—Pro Logic II “MOVIE” and Pro Logic II “MUSIC.”

MOVIE: Suitable for playing any Dolby Surround encoded software.

MUSIC: Suitable for playing any 2-channel stereo software.

No sound may come out of the subwoofer (though the subwoofer is activated) with Dolby Pro Logic II in use. (This depends on your speaker setting—see page 51.)

Digital Signal Processor (DSP) mode— reproducing the sound field

The sound heard in a concert hall, club, etc. consists of direct sound and indirect sound— early reflections and reflections from behind. Direct sounds reach the listener directly without any reflection. On the other hand, indirect sounds are delayed by the distances of the ceiling and walls. These direct sounds and indirect sounds are the most important elements of the acoustic surround effects.

DSP modes can create these important elements, and give you a real “being there” feeling.

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