Yamaha RX-A800 Owner's Manual page 87

Liveness
Surround Liveness
Surround Back Liveness
Liveness. Surround and surround back liveness. Adjusts the
reflectivity of the virtual walls in the hall by changing the rate at
which the early reflections decay. The early reflections of an audio
source decay much faster in a room with acoustically absorbent
wall surfaces than in one which has highly reflective surfaces. A
room with acoustically absorbent surfaces is referred to as "dead,"
while a room with highly reflective surfaces is referred to as "live."
This parameter lets you adjust the early reflection decay rate and
thus the "liveness" of the room.
Adjustable range 0 to 10
Source sound
Dead
Time Time
Small reflected
sound
Small value = 0
Reverb Time
Reverberation time. Adjusts the amount of time taken for the
dense, subsequent reverberation sound to decay by 60 dB at 1 kHz.
This changes the apparent size of the acoustic environment over an
extremely wide range. Set a longer reverberation time to get more
sustaining reverberation sound, and set a shorter time to get
articulate sound.
Adjustable range
Reverberation
60 dB
Rev. Time
Short
reverberation
Audio source
Live
Small value = 1.0 s
Time
Large reflected
sound
Large value = 10
1.0 to 5.0 s
Reverberation
Source sound
Early reflections
60 dB 60 dB
Time Time Time
Rev. Time Rev. Time
Long
reverberation
Large value = 5.0 s
Setting sound program parameters (Sound Program menu)
Reverb Delay
Reverberation delay. Adjusts the time difference between the
beginning of the direct sound and the beginning of the
reverberation sound. The larger the value, the later the
reverberation sound begins. A later reverberation sound makes you
feel as if you are in a larger acoustic environment.
Adjustable range 0 to 250 ms
Source sound
(dB)
Reverberation
Rev. Delay Rev. Time
SETUP
60 dB
Time
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