Bedienungsanleitung Yamaha TSS10 (Seite 18 von 20) (Englisch)

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■ Encode/Decode

When a signal or other information is processed,

compressed and digitized, this is called encoding.

Encoding can be used to record an extremely large

amount of information on a single CD or DVD.

An encoded signal cannot be listened to directly. It must

be returned to its original state (i.e. audible sound) and

this is called decoding.

■ Sound field

Not all sound travels from the sound source directly into

the human ear, but instead reflects off of walls, ceilings

and other objects to arrive at the ear slightly delayed

(early reflection). It may also reflect repeatedly in a

complicated manner before reaching the ear (subsequent

reverberation). A human is able to perceive the size and

shape of a location based on the various sounds heard in

this way. The specific acoustic space of a particular

building is called a sound field.

■ Dolby Surround

In movie theaters and in live theaters, the spectators are

surrounded by many speakers and sound effects geared to

each scene are used to make sound move from front to

back and right to left. This gives the sound a three

dimensional feel that surrounds the entire body. Dolby

Surround is used to implement this realistic effect.

Originally, the Dolby Surround system consisted of a total

of four channels: two front channels (right and left), one

center channel, and one rear channel. Later, two-channel

stereo compatibility was added to for broadcast and video

media used in the home. The ability to easily set up a

home AV system capable of stereo reproduction is one of

the biggest features of Dolby Surround.

■ Dolby Pro Logic II

Dolby Pro Logic II is an improved technique used to

decode vast numbers of existing Dolby Surround

software. This new technology enables a discrete 5-

channel playback with 2 front channels, 1 center channel,

and 2 rear channels (instead of only 1 rear channel for

conventional Pro Logic technology). A music mode is

also available for 2-channel sources in addition to the

movie mode.

■ Dolby Digital

Dolby Digital consists of a total of five channels: three

front channels (left, center and right) and two rear

channels (right and left), plus a distinct LFE channel for

low frequency effect. It is therefore commonly referred to

as a 5.1 channel system. Using digital compression

technology for all 5.1 channels, Dolby Digital can be used

for completely independent audio reproduction. Dolby

Digital offers superior sound separation between each

channels and a more three dimensional surround effect in

comparison to the older Dolby Surround, which mixes

four channels (three front and one rear) into two-channel

stereo and separates them using a matrix circuit.

GLOSSARY

■ DTS (Digital Theater Systems)

Digital Surround

DTS was developed to replace the analog soundtracks of

movies with six discrete channels of digital soundtracks,

and it is now installed in many theaters around the world.

The DTS digital playback system changed the way we

experienced movies in theaters with six discrete channels

of superb digital audio.

DTS technology, through intense research and

development has made it possible to deliver similar

encode/decode discrete technology to home audio

surround-sound entertainment.

DTS Digital Surround is an encode/decode system which

delivers six channels of master-quality, 20-bit audio;

technically, it is 5.1 channels, which means 5 full-range

(left, center, right and two surround) channels, plus a

subwoofer (LFE) channel (as “0.1”). It is compatible with

the 5.1 speaker configurations that are currently available

for home theater systems.

■ LFE 0.1 channel

This channel is for the reproduction of low bass signals.

The frequency range for this channel is 20 Hz to 120 Hz.

This channel is counted as 0.1 because it only enforces a

low frequency range compared to the full-range

reproduced by the other 5 channels in a Dolby Digital or

DTS 5.1 channel systems.

■ SILENT CINEMA

YAMAHA has developed a natural, realistic sound effect

DSP algorithm for headphones.

Parameters for headphones have been set for each

surround mode so that accurate representations of all the

surround modes can be enjoyed using headphones.

TSS-10Eng(UB)a 02.7.31, 2:35 PM16

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