Pioneer VSX-1125-k User Manual download pdf (Page 100)

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100

Surround sound formats

Below is a brief description of the main surround sound

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

terrestrial broadcasts, and video cassettes.

Dolby

The Dolby technologies are explained below. See

www.dolby.com for more detailed information.

Manufactured under license from Dolby Laboratories.

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

trademarks of Dolby Laboratories.

DTS

The DTS technologies are explained below. See

www.dtstech.com for more detailed information.

Manufactured under license under U.S. Patent #’s:

5,451,942; 5,956,674; 5,974,380; 5,978,762; 6,226,616;

6,487,535; 7,212,872; 7,333,929; 7,392,195; 7,272,567 &

other U.S. and worldwide patents issued & pending. DTS

and the Symbol are registered trademarks, & DTS-HD, DTS-

HD Master Audio, and the DTS logos are trademarks of

DTS, Inc. Product includes software. © DTS, Inc. All Rights

Reserved.

Windows Media Audio 9 Professional

Windows Media Audio 9 Professional (WMA9 Pro) is a

discrete surround format developed by Microsoft

Corporation.

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

THX 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 experie

nce as in a movie theatre.

• THX Select2 Plus

Before any home theatre component can be THX Select2 Plus

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 Plus logo, which is your guarantee

that the Home Theatre products you purchase will give you superb

performance for many years to come. THX Select2 Plus requirements

cover every aspect of the product including pre-amplifier and power

amplifier performance and operation, and hundreds of other

parame

ters in both the digital and analog domain.

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