Yamaha HTR-5750 Owner's Manual page 59

What is 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, and the size
and shape of the room in which
V,
e are sitting.
• Elements of a sound field
In any environment. in addition to the direct sound coming
straight to our ears trom the player's instrument, there are
two distinct types of sound reflections that combine to
make up the sound field:
Early reflections
Reflected sounds reach our ears extremely rapidly 150 ms
- 00 ms after die direct sound). after reflecting from one
surface only
l'or example. from the ceiling or a wall.
Early reflections actually add clarity to the direct sound.
Reverberations
These are caused by reflections from more than one
surface — walls, ceiling, the hack of the room — 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
reverberation 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 von cow," create
the appropriate early reflections and
subsequent reverberations in your listening room, you
would he able to create your own listening environment.
The acoustics in y our room could he changed to those of a
concert hall a dance floor, or virtually any size room at
all. This ability to create sound fields at will is exactly
what Y.AMAHA has done with the digital sound field
processor.
Changing parameter settings
You can enjoy good quality sound with the factory preset
parameter. Although you do not have to change the initial
settings, you can change some of the parameters to better
suit the input source or your listening room.
in: rfi
ma
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, 4
Press AMP.
Select the sound field program you want to
adjust.
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3
Press " / to select
the parameters.
1
- ES -
4
Press < / > to change
the parameter value.
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55