Yamaha YHT-S401 Owner's Manual download pdf (Page 33)

29 En

ADDITIONAL

INFORMATION

English

■ AIR SURROUND XTREME

This unit employs new technologies and algorithms that

make it possible to achieve 7-channel surround sound with

only front speakers, and without using wall reflections.

Ordinarily, two front speakers, a center speaker, two

surround speakers, two surround back speakers, and a

subwoofer are necessary for enjoying 7.1 channel

surround sound.

Virtual 7.1 channel

The AIR SURROUND XTREME technology, using only

front speakers and subwoofer, enables you to enjoy a

realistic 7.1 channel sound by simulating sound from

virtual speakers at center, surround, and surround backs.

■ Sampling frequency

The number of sampling (process for digitalizing analog

signals) per second. In principle, the higher the sampling

rate, the wider the frequency range that can be played

back, and the higher the quantized bit rate, the finer the

sound that can be reproduced.

■ Dolby Digital

Digital surround sound system which is developed by

Dolby Laboratories provides completely independent

multi-channel audio. With 3 front channels (left, center,

and right) and 2 surround stereo channels, Dolby Digital

provides five full-range audio channels. With an

additional channel especially for bass effects (called LFE,

or low frequency effect), the system has a total of 5.1

channels (LFE is counted as 0.1 channel). By using 2

channel stereo for the surround speakers, more accurate

moving sound effects and surround sound environment

are possible than with Dolby Surround.

■ Dolby Digital Plus

Dolby Digital Plus is an advanced audio technology

developed for high-definition programming and media

including HD broadcasts, and Blu-ray Disc. Selected as an

optional audio standard for Blu-ray Disc, this technology

delivers multichannel sound with discrete channel output.

Supporting bitrates up to 6.0 Mbps, Dolby Digital Plus

can carry up to 7.1 discreet audio channels

simultaneously. Supported by HDMI and designed for the

optical disc players and AV receivers/amplifiers of the

future, Dolby Digital Plus also remains fully compatible

with the existing multichannel audio systems that

incorporate Dolby Digital.

■ Dolby Pro Logic II

It is an improved matrix decoding technology that

provides better spatiality and directionality on Dolby

Surround programmed material; provides a convincing

three-dimensional sound field on conventional stereo

music recordings; and is ideally suited to bring the

surround experience to automotive sound. While

conventional surround programming is fully compatible

with Dolby Pro Logic II decoders, soundtracks will be

able to be encoded specifically to take full advantage of

Pro Logic II playback, including separate left and right

surround channels.

Glossary

Front speakers

Subwoofer

Center

speaker

Surround back speakers

Typical 7.1 channel speaker unit

Surround speakers

The unit creates the virtual 7.1 channel surround sound

with the subwoofer integrated receiver and the speaker.

C: Center speaker

FR, FL: Front speakers

SW: Subwoofer

SR, SL: Surround virtual speakers

SBR, SBL: Surround back virtual speakers

The sound image of the unit

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Yamaha YHT-S401 Owner's Manual Page 33

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