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Yamaha RX-V3800 Manual

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SOUND FIELD PROGRAM INFORMATION
139 En
ADDITIONAL
INFORMATION
English
■ 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 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.
■ 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.
■ 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 output from each speaker
Sound output from each speaker depends on the type of
audio signals being input. Refer to the diagrams in the
table below to understand the speaker layout for each
sound field program. For details about the sound output
from each speaker in sound field programs, refer to
“Sound output in each sound field program” in
“APPENDIX” at the end of this manual.
Be advised that there may be no or not enough sound output from
speakers depending on the type of input source being played
back. Furthermore, there may be some channels that can only be
used partially when they are adjusted to specific aspects of
movies, such as special sound effects, etc.
y
Except for “2ch Stereo”, “7ch Stereo”, and “STRAIGHT”, you
can select a decoder to output sound from the surround back
speakers (see page 45).
Sound field program information
Note
… 141 …


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