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What really creates the rich, full tones of a live instrument
are the multiple reflections l'rom 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 we are sitting.
• Elements of a sound field
Ill any environment, ill addition to the direct sound coming
straight to our ears t_om 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 (50 ms
- 100 ms alter the direct sound), alter reflecting from one
surface only for example, from the ceiling or a wall.
Early reflections actually acid clarity to the direct sound.
Reverberations
These are caused by reflections from more than one
surface walls, ceiling, the back 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 fiekt 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 coukt be changed to those of a
concert hall, a dance floor, or virtually any size room at
all. This ability to create sound fiekts at will is exactly
what YAMAHA has done with the digital sound field
processor.
You can enjoy good quality sound with the factory preset
parameters. 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.
,5
1 Press AMP.
Turn on the video monitor and
press ON SCREEN repeatedly .........
to select the full display _
mode.
Select the sound field program youwant to
adjust.
STEREO HALL JAZZ
_ _ __MUS_C ENTERTAtN TVTHTR MOWE
_/DTS NIGHT EX/ES S
E_FECT I
Program No.
Cursor =
Parameters
Program name
!
/
Parameter values
64
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