Denon AVR-4802R User Manual download pdf (Page 83)

(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, see page

60.)

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 (C) and the reversed phase component to the surround (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.

1 DTS signals are recorded in the same way on CDs and LDs as PCM signals. Because of this, the un-decoded DTS signals are output

as random “hissy” noise from the CD or LD player’s analog outputs. If this noise is played with the amplifier set at a very high volume,

it may possibly cause damage to the speakers. To avoid this, be sure to switch the input mode to “AUTO” or “DTS” before playing

CDs or LDs recorded in DTS. Also, never switch the input mode to “ANALOG” or “PCM” during playback. The same holds true when

playing CDs or LDs on a DVD player or LD/DVD compatible player. For DVDs, the DTS signals are recorded in a special way so this

problem does not occur.

2 The signals provided at the digital outputs of a CD or LD player may undergo some sort of internal signal processing (output level

adjustment, sampling frequency conversion, etc.). In this case the DTS-encoded signals may be processed erroneously, in which case

they cannot be decoded by the AVR-4802R, or may only produce noise. Before playing DTS signals for the first time, turn down the

master volume to a low level, start playing the DTS disc, then check whether the DTS indicator on the AVR-4802R (see page 61) lights

before turning up the master volume.

3 A DVD player with DTS-compatible digital output is required to play DTS DVDs. A DTS Digital Output logo is featured on the front

panel of compatible DVD players. Recent DENON DVD player models feature DTS-compatible digital output – consult the player’s

owner’s manual for information on configuring the digital output for DTS playback of DTS-encoded DVDs.

Manufactured under license from Digital Theater Systems, Inc. US Pat. No. 5,451,942, 5,956,674, 5,974,380, 5,978,762 and other world-wide

patents issued and pending. “DTS”,”DTS-ES Extended Surround” and “Neo:6” are trademarks of Digital Theater Systems, Inc. Copyright

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