Editing Sound Field Parameters; What Is A Sound Field; Changing Parameter Settings - Yamaha RX-V2500 Owner's Manual

EDITING SOUND FIELD PARAMETERS

What is a sound field?

A significant factor that 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 we are sitting.
Elements of a sound field
In any environment, in addition to the direct sound coming
straight to our ears from 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 after the direct sound), after reflecting from one
surface only – for example, from the ceiling or a wall.
Early reflections help add 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 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 virtually any size room at
all. This ability to create sound fields at will is exactly
what YAMAHA has done with the digital sound field
processor.
EDITING SOUND FIELD PARAMETERS

Changing parameter settings

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. The following
parameters are not always found in every program.
1
Set AMP/SOURCE/TV to AMP.
AMP
SOURCE
TV
2
Press TOP on the remote control.
3
Select Stereo/Surround, then press h.
STEREO
MUSIC
ENTERTAINMENT
MOVIE THEATER
4
Select the desired sound field program, then
press h to access and adjust.
Munich
Vienna
Freiburg
Note
You cannot change parameter values when Memory Guard is set
to "Guard". If you want to change the parameter values, set
Memory Guard to "Free" (see page 67).
Memory back-up
The memory back-up circuit prevents the stored data from
being lost even if this unit is set in the standby mode, the
power cable is disconnected from the AC outlet, or the power
supply is temporarily cut due to power failure. However, if
the power is cut for more than one week, the parameter values
will return to the factory settings. If this happens, edit the
parameter value again.
Resetting parameters to the factory values
To reset all parameters
Use Surr.Initialize (see page 66).
Munich
Vienna
Freiburg
DSP Level
Init. Delay
Room Size
89