Sound Field Options; What Is A Sound Field - Yamaha RX Z9 - AV Receiver Owner's Manual

SOUND FIELD OPTIONS

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 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 actually 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.
Sound field parameters (Stereo/Surround)
Use to select and adjust sound field parameters.
Item
DSP Level
Init. Delay
Room Size
Liveness
Dialogue Lift
Rev. Time
Rev. Delay
Rev. Level
Sur. Delay
Initialize
Sur.Init.Delay
Sur.Room Size
Sur.Liveness
SB Init.Delay
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SOUND FIELD OPTIONS
Adjusts the level of all the DSP effect sounds.
Adjusts the apparent distance from the source sound.
Adjusts the apparent size of the sound field.
Adjusts the reflectivity of the virtual walls in the hall.
Adjusts the height of the front and center channel sounds.
Adjusts the apparent size of the acoustic environment.
Adjusts the time difference between the beginning of the direct sound and the beginning
of the reverberation sound.
Adjusts the volume of the reverberation sound.
Adjusts the delay between the front (left, right and center) signals and the surround signals.
Initializes the parameters of the sound field program.
Adjusts the delay between the direct sound and the first reflection in the surround sound field.
Adjusts the apparent size of the surround sound field.
Adjusts the apparent reflectivity of the virtual walls in the surround sound field.
Adjusts the delay between the direct sound and the first reflection in the surround back sound field.
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