Bedienungsanleitung Yamaha DSP-AX3200 (Seite 32 von 78) (Englisch)

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DIGITAL SOUND FIELD PROCESSING (DSP)

Understanding Sound Fields

A sound field is defined as the “characteristic sound reflections of a

particular space.” In concert halls and other music venues, we hear

early reflections and reverberations as well as the direct sound

produced by the artist(s). The variations in the early reflections and

other reverberations among the different music venues is what gives

each venue its special and recognizable sound quality.

YAMAHA sent teams of sound engineers all around the world to

measure the sound reflections of famous concert halls and music

venues, and collect detailed sound field information such as the

direction, strength, range, and delay time of those reflections. Then

we stored this enormous amount of data in the ROM chips of this

unit.

■ Recreating a sound field

Recreating the sound field of a concert hall or an opera house requires localizing the virtual sound sources in your

listening room. The traditional stereo system that uses only two speakers is not capable of recreating a realistic sound

field. YAMAHA’s DSP requires four effect speakers to recreate sound fields based on the measured sound field data.

The processor controls the strength and delay time of the signals output from the four effect speakers to localize the

virtual sound sources in a full circle around the listener.

Hi-Fi DSP Programs

The following list gives you a brief description of the sound fields produced by each of the DSP programs. Keep in

mind that most of these are precise digital recreations of actual acoustic environments.

No.

CONCERT HALL 1

CONCERT HALL 2

CHURCH

Europe Hall A

Europe Hall B

U.S.A. Hall C

Live Concert

Freiburg

Royaumont

Features

This is a large fan-shaped concert hall with approximately 2500 seats.

There is relatively little reflection from the walls, and sound spreads

finely and beautifully.

This is a large shoe-box type concert hall with less than 2400 seats

located in Frankfurt. This hall has a very solid, powerful sound. The

listener’s virtual seat is in the center-right section on the first floor.

This is a large 2600 seat concert hall in the United States which features

a fairly traditional European design. The middle and high frequencies

are richly and beautifully reinforced.

A large round concert hall with a rich surround effect. Pronounced

reflections from all directions emphasize the extension of sounds. The

sound field has a great deal of presence, and your virtual seat is near the

center, close to the stage.

This program recreates the acoustic environment of a big church located

in south Germany. The reverberation delay is very long while the early

reflections are smaller than with other sound field programs.

This program features the sound field created by the refectory (dining

hall) of a beautiful medieval Gothic monastery located in Royaumont on

the outskirts of Paris.

Program

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Yamaha DSP-AX3200 Seite 32

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