Yamaha RX-V2065 - Инструкция по эксплуатации - Страница 81

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INTR

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APPENDIX

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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/or the ceiling) so 
numerous that they merge together to form a continuous 
sonic afterglow. They are nondirectional and lessen the 
clarity of the direct sound.

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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 provides the audiovisual experience of a 
movie theater in the listening room of your own home by 
using the Yamaha original sound field technology 
combined with various digital audio systems.

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CINEMA DSP 3D

The actually measured sound field data contain the 
information of the height of the sound images. CINEMA 
DSP 3D feature achieves the reproduction of the accurate 
height of the sound images so that it creates the accurate 
and intensive stereoscopic sound fields in a listening 
room.

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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.

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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.

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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

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.