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Additional information

Windows Media

Audio 9 Professional

Windows Media

Audio 9 Professional (WMA9 Pro) is a

discrete surround format developed by Microsoft

Corporation.

WMA9 Pro can support up to 5.1/7.1 channel playback with

sampling rates up to 24-bit/96kHz. Using the unique WMA

compression techniques, WMA9 Pro can deliver

multichannel music and soundtracks over high-speed

internet networks at low bit rates with minimal audio

degradation. Playback may be enjoyed with the Windows

Media

Player 9 Series (or other third-party media player) on

a personal computer, or with an AV amplifier with on-board

WMA9 Pro decoding.

Windows Media

and the Windows logo are trademarks or

registered trademarks of Microsoft Corporation in the United

States and/or other countries.

About THX

The THX technologies are explained below. See

www.thx.com for more detailed information.

THX Cinema processing

THX is an exclusive set of standards and technologies

established by the world-renowned film production

company, Lucasfilm Ltd. THX grew from George Lucas'

personal desire to make your experience of the film

soundtrack, in both movie theatres and in your home

theatre, as faithful as possible to what the director intended.

Movie soundtracks are mixed in special movie theatres

called dubbing stages and are designed to be played back in

movie theatres with similar equipment and conditions. This

same soundtrack is then transferred directly onto Laserdisc,

VHS tape, DVD, etc., and is not changed for playback in a

small home theatre environment. THX engineers developed

patented technologies to accurately translate the sound

from the movie theatre environment into the home,

correcting the tonal and spatial errors that occur. On this

product, when the THX indicator is on, THX features are

automatically added in Cinema modes (e.g. THX Cinema,

THX Surround EX).

Re-Equalization

The tonal balance of a film soundtrack will be excessively

bright and harsh when played back over audio equipment in

the home because film soundtracks were designed to be

played back in large movie theaters using very different

professional equipment. Re-Equalization restores the

correct tonal balance for watching a movie soundtrack in a

small home environment.

Timbre Matching

The human ear changes our perception of a sound

depending on the direction from which the sound is coming.

In a movie theatre, there is an array of surround speakers so

that the surround information is all around you. In a home

theatre, you use only two speakers located to the side of your

head. The Timbre Matching feature filters the information

going to the surround speakers so that they more closely

match the tonal characteristics of the sound coming from

the front speakers. This ensures seamless panning between

the front and surround speakers.

Adaptive Decorrelation

In a movie theatre, a large number of surround speakers help

create an enveloping surround sound experience, but in a

home theatre there are usually only two speakers. This can

make the surround speakers sound like headphones that

lack spaciousness and envelopment. The surround sounds

will also collapse into the closest speaker as you move away

from the middle seating position. Adaptive Decorrelation

slightly changes one surround channel's time and phase

relationship with respect to the other surround channel. This

expands the listening position and creates—with only two

speakers— the same spacious surround experience as in a

movie theatre.

THX Select2

Before any home theatre component can be THX Select2

certified, it must incorporate all the features above and also

pass a rigorous series of quality and performance tests. Only

then can a product feature the THX Select2 logo, which is

your guarantee that the Home Theatre products you

purchase will give you superb performance for many years to

come. THX Select2 requirements cover every aspect of the

product including pre-amplifier and power amplifier

performance and operation, and hundreds of other

parameters in both the digital and analog domain.

THX Surround EX

THX Surround EX - Dolby Digital Surround EX is a joint

development of Dolby Laboratories and the THX Ltd. In a

movie theater, film soundtracks that have been encoded

with Dolby Digital Surround EX technology are able to

reproduce an extra channel which has been added during

the mixing of the program. This channel, called Surround

Back, places sounds behind the listener in addition to the

currently available front left, front center, front right,

surround right, surround left and subwoofer channels. This

additional channel provides the opportunity for more

detailed imaging behind the listener and brings more depth,

spacious ambience and sound localization than ever before.

Movies that were created using the Dolby Digital Surround

EX technology, when released into the home consumer

market may exhibit wording to that effect on the packaging.

A list of movies created using this technology can be found

on the Dolby web site at www.dolby.com.

Only receiver and controller products bearing the THX

Surround EX logo, when in the THX Surround EX mode,

faithfully reproduce this new technology in the home.

VSX_1015.book.fm 73 ページ２００４年１１月２９日　月曜日　午後２時３８分

Pioneer VSX-1015TX Seite 73

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