Bedienungsanleitung Pioneer VSX-9140TXH (Seite 107 von 123) (Englisch)

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Additional information

107

Surround sound formats

Below is a brief description of the main surround sound

formats you’ll find on DVDs, satellite, cable and

terrestrial broadcasts, and video cassettes.

Dolby

The Dolby technologies are explained below. See

www.dolby.com for more detailed information.

Dolby Digital

Dolby Digital is a multichannel digital audio coding

system widely used in cinemas, and in the home for DVD

and digital broadcast soundtracks. It can deliver up to six

discrete audio channels, comprising five full range

channels and a special LFE (low frequency effects)

channel used mainly for deep, rumbling sound effects;

hence the term “5.1-channel” Dolby Digital.

In addition to the format features above, Dolby Digital

decoders offer downmixing for compatibility with mono,

stereo and Dolby Pro Logic audio fr om a number of bit

rates and channels. Another feature, called Dialog

Normalization, attenuates programs based on the

average level of dialog in a program relative to its peak

level (also known as Dialnorm) in order to achieve

uniform playback level.

Dolby Digital Surround EX

Dolby Digital Surround EX (the EX stands for EXtended)

is an extension of Dolby Digital encoding whereby a

surround back channel is matrixed into the surround left/

right channels for 6.1 channel playback. This allows for

compatibility with Dolby Digital 5.1 channel decoding, as

well as for decoding using Dolby Digital EX.

Dolby Pro Logic IIx and Dolby Surround

Dolby Pro Logic IIx is an improved version of the Dolby

Pro Logic II (and Dolby Pro Logic) decoding system. Using

the innovative “steering logic” circuit, this system

extracts surround sound from sources as follows:

• Dolby Pro Logic – 4.1 channel sound (mono

surround) from any stereo source

• Dolby Pro Logic II – 5.1 channel sound (stereo

surround) from any stereo source

• Dolby Pro Logic IIx – 6.1 or 7.1 channel sound

(stereo surround and surround back) from two

channel or 5.1 (and 6.1) channel sources

With two channel sources, the “.1” subwoofer channel is

generated by bass management in the receiver.

Dolby Surround is an encoding system which embeds

surround sound information within a stereo soundtrack,

which a Dolby Pro Logic decoder can then use for

enhanced surround listening with greater s

ound detail.

Dolby Digital Plus

Dolby Digital Plus is the next-generation audio

technology for all high-definition programming and

media. It combines the efficiency to meet futur e

broadcast demands with the power and flexibility to

realize the full audio potential expected in the upcoming

high-definition era. Built on Dolby Digital, the multi-

channel audio standard for DVD and HD broadcasts

worldwide, Dolby Digital Plus was designed for the next-

generation A/V receivers but remains fully compatible

with all current A/V receivers.

Dolby Digital Plus delivers multi-channel audio programs

of up to 7.1 channels (*) and supports multiple programs

in a single encoded bitstream with the maximum bit rate

potential of up to 6 Mbps and the maximum bit rate

performance of up

3 Mbps on HD DVD and 1.7 Mbps

on Blu-ray Disc, and it outputs Dolby Digital bitstreams

for playback on existing Dolby Digital systems. Dolby

Digital Plus can accurately reproduce the sound

originally intended by directors and producers.

It also features multi-channel sound with discrete

channel output, interactive mixing and streaming

capability in advanced systems. Supported by High-

Definition Media Interface (HDMI), a single-cable digital

connection is possible for high-definition audio and video.

Dolby TrueHD

Dolby TrueHD is the next-generation lossless encoding

technology developed for high-definition optical discs in

the upcoming era. Dolby TrueHD delivers tantalizing

sound that is bit-for-bit identical to the studio master,

unlocking the true high-definition entertainment

experience on high-definition optical discs in the next

generation. When coupled with high-definition video,

Dolby TrueHD offers an unprecedented home theater

experience with stunning sound and high-definition

picture.

It supports bit rates of up to 18 Mbps and records up to 8

full-range channels (*) individually with 24-bit/96 kHz

audio. It also features extensive metadata including

dialogue normalization and dynamic range control.

Supported by High-Definition Media Interface (HDMI), a

single-cable digital connection is possible for high-

finition audio and video.

HD DVD and Blu-ray Disc standards currently limit their

maximum number of audio channels to eight, wher eas

Dolby Digital Plus and Dolby TrueHD support more than

eight audio channels.

Manufactured under license from Dolby Laboratories.

Dolby, Pro Logic, Surround EX and the double-D symbol are

trademarks of Dolby Laboratories.

VSX-9140TXH_CUXJ.book 107 ページ２００９年４月１６日　木曜日　午前１０時３６分

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