Additional information

[2] DTS Digital Surround

Digital Theater Surround (also called simply DTS) is a multi- channel digital signal format developed by Digital Theater Systems.

DTS offers the same “5.1” playback channels as Dolby Digital (front left, front right and center, surround left and surround right) as well as the stereo 2-channel mode. The signals for the different channels are fully independent, eliminating the risk of deterioration of sound quality due to interference between signals, crosstalk, etc.

DTS features a relatively higher bit rate as compared to Dolby Digital (1234 kbps for CDs and LDs, 1536 kbps for DVDs) so it operates with a relatively low compression rate. Because of this the amount of data is great, and when DTS playback is used in movie theaters, a separate CD-ROM synchronized with the film is played.

With LDs and DVDs, there is of course no need for an extra disc; the pictures and sound can be recorded simultaneously on the same disc, so the discs can be handled in the same way as discs with other formats.

Other media include CDs recorded in DTS. These are the same discs as conventional CDs (recorded in 2 channels) but include

5.1channel surround signals. They do not include images, but they do permit surround playback on the S-301 and on CD players.DTS surround track playback offers the same intricate, grand sound as in a movie theater, right in your own listening room.

2DTS compatible media and playback methods

Marks indicating DTS compatibility: and

The following are general examples. Also refer to the player’s operating instructions.

“DTS” and “DTS Digital Surround” are registered trademarks of Digital Theater Systems, Inc.

“DTS” and “DTS Virtual” are trademarks of Digital Theater Systems, Inc.

Media

DTS Digital output

Playback method

terminals

(reference page)

 

 

 

 

 

 

Set the input mode to

 

Optical or coaxial digital

“AUTO” or “DTS”

CD

output

(

page 51).

(same as for PCM)

Never set the mode to

 

 

2

“ANALOG” or “PCM”.

 

 

 

1

 

 

 

 

 

Set the input mode to

 

Optical or coaxial digital

“AUTO” or “DTS”

LD (VDP)

output

(

page 51).

(same as for PCM)

Never set the mode to

 

 

2

“ANALOG” or “PCM”.

 

 

 

1

Optical or coaxial digital

Set the input mode to

output

DVD“AUTO” or “DTS” (same as for PCM)

( page 51).

3

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 is true when playing CDs and LDs recorded in DTS on the ADV- S301 or on LD/DVD compatible players. With DVDs, the DTS signals are recorded with a special recording method so there is no problem. 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 this unit, 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 this unit ( page 51) lights before turning up the master volume.

3: To play in DTS Digital Surround on the S-301, set “SETUP”

–“AUDIO SETUP” – “DIGITAL OUT” to “NORMAL” in the setup. (The factory default is “NORMAL”.)

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Additional information

Dolby Virtual Speaker

Dolby Virtual Speaker technology uses proprietary technology of Dolby Laboratories to create a virtual surround sound field using only two speakers for the front channels, allowing the user to experience sound as if surround speakers were actually being used.

2Features of Dolby Virtual Speaker sound

• Accurate surround sound field positioning

The virtual surround speakers are positioned at 105° to the left and 105° to the right.

• Multi-channel programs played according to the producer’s intentions

The sound of the different channels is played in the position set upon mixing. For example, sound set at the rear left is heard from the rear left.

• Stereo programs played in surround

The Dolby Pro Logic II circuit is used together with the Dolby Virtual Speaker circuitry to create a rich virtual surround sound field with stereo programs as well.

• Selecting the listening mode

Two listening modes are provided: Reference and Wide.

Reference mode

Wide mode

: 2 front channels

: Virtual sound field created with the

 

Dolby Virtual Speaker mode

Dolby Headphone

Dolby Headphone is a 3D sound technology developed jointly by Dolby Laboratories and Lake Technology of Australia achieving surround sound with regular headphones.

Normally when using headphones all the sounds are sounded in the head, making it uncomfortable to listen with headphones for long periods of time. Dolby Headphone simulates speaker playback in a room and positions the sound sources to the front or the sides, outside of the head, achieving a powerful sound similar to that of a movie theater or home theater. This technology is aimed mainly at multi-channel audio or video equipment including Dolby Digital or Dolby Pro Logic Surround decoding functions and operates inside a high performance digital signal processing chip (DSP).

The Dolby Headphone mode can be used not only with multi- channel sources but also with stereo programs.

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