Denon AVR 4806 - AV Receiver Operations Instructions download pdf (Page 138)

138

Additional Information

[3] DTS-ES Extended Surround™

DTS-ES Extended Surround is a new multi-channel digital

signal format developed by Digital Theater Systems Inc.

While offering high compatibility with the conventional

DTS Digital Surround format, DTS-ES Extended Surround

greatly improves the 360-degree surround impression and

space expression thanks to further expanded surround

signals. This format has been used professionally in movie

theaters since 1999.

In addition to the 5.1 surround channels (FL, FR, C, SL, SR

and LFE), DTS-ES Extended Surround also offers the SB

(Surround Back, sometimes also referred to as “surround

center”) channel for surround playback with a total of 6.1

channels. DTS-ES Extended Surround includes two signal

formats with different surround signal recording methods,

as described below.

2 DTS-ES™ Discrete 6.1

DTS-ES Discrete 6.1 is the newest recording format. With

it, all 6.1 channels (including the SB channel) are recorded

independently using a digital discrete system. The main

feature of this format is that because the SL, SR and SB

channels are fully independent, the sound can be designed

with total freedom and it is possible to achieve a sense

that the acoustic images are moving about freely among

the background sounds surrounding the listener from 360

degrees.

Though maximum 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 SB channel signals are automatically down-mixed to

the SL and SR channels, so none of the signal components

are lost.

2 DTS-ES™ Matrix 6.1

With this format, the additional SB channel signals

undergo matrix encoding and are input to the SL and SR

channels beforehand. Upon playback they are decoded to

the SL, SR and SB channels. The performance of the

encoder used at the time of recording can be fully matched

using a high precision digital matrix decoder developed by

DTS, thereby achieving surround sound more faithful to

the producer’s sound design aims than with conventional

5.1- or 6.1-channel systems.

In addition, the bit stream format is 100% compatible with

conventional DTS signals, so the effect of the Matrix 6.1

format can be achieved even with 5.1-channel signal

sources. Of course it is also possible to play DTS-ES Matrix

6.1 encoded sources with a DTS 5.1-channel decoder.

When DTS-ES Discrete 6.1 or Matrix 6.1 encoded sources

are decoded with a DTS-ES decoder, the format is

automatically detected upon decoding and the optimum

playing mode is selected. However, some Matrix 6.1

sources may be detected as having a 5.1-channel format,

so the DTS-ES Matrix 6.1 mode must be set manually to

play these sources. (For instructions on selecting the

surround mode ( page 52).)

The DTS-ES decoder includes another function, the DTS

Neo:6 surround mode for 6.1-channel playback of digital

PCM and analog signal sources.

2 DTS Neo:6™ surround

This mode applies conventional 2-channel signals to the

high precision digital matrix decoder used for DTS-ES

Matrix 6.1 to achieve 6.1-channel surround playback. High

precision input signal detection and matrix processing

enable full band reproduction (frequency response of 20

Hz to 20 kHz or greater) for all 6.1 channels, and separation

between the different channels is improved to the same

level as that of a digital discrete system.

DTS Neo:6 surround includes two modes for selecting the

optimum decoding for the signal source.

• DTS Neo:6 Cinema

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.

This mode is effective for playing sources recorded in

conventional surround formats as well, because the in-

phase component is assigned mainly to the center channel

(SL, SR and SB channels).

• DTS Neo:6 Music

This mode is suited mainly for playing music. The front

channel (FL and FR) signals bypass the decoder and are

played directly so there is no loss of sound quality, and the

effect of the surround signals output from the center (C)

and surround (SL, SR and SB) channels add a natural sense

of expansion to the sound field.

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