Bedienungsanleitung Yamaha RX-V861 (Seite 116 von 135) (Englisch)

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SOUND FIELD PROGRAM INFORMATION

114 En

■ Elements of a sound field

What really creates the rich, full tones of a live instrument

are the multiple reflections from the walls of the room. In

addition to making the sound live, these reflections enable

us to tell where the player is situated as well as the size

and shape of the room in which we are sitting.

There are two distinct types of sound reflections that

combine to make up the sound field in addition to the

direct sound coming straight to our ears from the player’s

instrument.

Early reflections

Reflected sounds reach our ears extremely rapidly (50 ms

to 100 ms after the direct sound), after reflecting from one

surface only (for example, from a wall or the ceiling).

Early reflections actually add clarity to the direct sound.

Reverberations

These are caused by reflections from more than one

surface (for example, from the walls, and the ceiling) so

numerous that they merge together to form a continuous

sonic afterglow. They are non-directional and lessen the

clarity of the direct sound.

Direct sound, early reflections and subsequent

reverberations taken together help us to determine the

subjective size and shape of the room, and it is this

information that the digital sound field processor

reproduces in order to create sound fields.

If you could create the appropriate early reflections and

subsequent reverberations in your listening room, you

would be able to create your own listening environment.

The acoustics in your room could be changed to those of a

concert hall, a dance floor, or a room with virtually any

size at all. This ability to create sound fields at will is

exactly what Yamaha has done with the digital sound field

processor.

■ CINEMA DSP

Since the Dolby Surround and DTS systems were

originally designed for use in movie theaters, their effect

is best felt in a theater having many speakers designed for

acoustic effects. Since home conditions, such as room

size, wall material, number of speakers, and so on, can

differ so widely, it is inevitable that there are differences in

the sound heard. Based on a wealth of actually measured

data, Yamaha CINEMA DSP uses Yamaha original sound

field technology to combine Dolby Pro Logic, Dolby

Digital and DTS systems to provide the audiovisual

experience of a movie theater in the listening room of your

own home.

■ SILENT CINEMA

Yamaha has developed a natural, realistic sound effect

DSP algorithm for headphones. Parameters for

headphones have been set for each sound field so that

accurate representations of all the sound field programs

can be enjoyed on headphones.

■ Virtual CINEMA DSP

Yamaha has developed a Virtual CINEMA DSP algorithm

that allows you to enjoy DSP sound field surround effects

even without any surround speakers by using virtual

surround speakers. It is even possible to enjoy Virtual

CINEMA DSP using a minimal two-speaker system that

does not include a center speaker.

■ Compressed Music Enhancer

The Compressed Music Enhancer feature of this unit

enhances your listening experience by regenerating the

missing harmonics in a compression artifact. As a result,

flattened complexity due to the loss of high-frequency

fidelity as well as lack of bass due to the loss of low-

frequency bass is compensated, providing improved

performance of the overall sound system.

Sound field program information

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