Sony STR-D1011 - Manual (Page 35)

I Seat Position Simulation
I Effect Level
When you sit in the front of a room, you will hear more direct
sound from the front speakers, and the component of
reflected sounds from the front speakers grows as you
move to the rear. Similarly, the component of reflected
sound changes when you move from left to right, and vice
versa. The F/R and L/R parameters control the balance of
the direct and reflected sound and other components of
sound to simulate your listening position.
When adjusting the F/R parameter, the F indicator on the
display signifies the front position of the room, the R
indicator signifies the rear position, the middle point of the
indicator designates the center position. When adjusting
the L/R-parameter, the L indicator signifies the left position
of the room, the R indicator signifies the right position, and
the middle point of the indicator designates the center
position.
Effect level is the combination of the level of early reflections
and reverberation. The L indioator on the display signifies
the lowest level and the H indicator signifies the highest
level. The adjustable level is divided into 20 segments. As
you select higher level, the room becomes more “live", and
as you select lower level, the room becomes‘"dead".
■ Reverberation Time
This parameter adjusts the length of the reverberation — the
time required for reverberative sound to decrease to -60 dB.
The S indicator on the display signifies the shortest
reverberation time, the L indicator signifies the longest
reverberation time.