Yamaha RX-V1900 Owner's Manual page 66

Advanced sound configurations
Sound field parameter
LIVENESS
S.LIVENESS
SB LIVENESS
REV.TIME
62
En
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 a sound
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.
Control range: 0 to 10
Dead
Time
Small reflected
sound
Small value = 0
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 for "dead" sources and listening
room environments, and a shorter time for "live" sources and listening room environments.
Control range: 1.0 to 5.0 s
Reverberation
60 dB
REV.TIME
Sound source
Short
reverberation
Small value = 1.0 s
Features
Source sound
Time
Large reflected
sound
Large value = 10
Source sound Reverberation
Early reflections
60 dB
REV.TIME REV.TIME
Long
reverberation
Live
Time
60 dB
Large value = 5.0 s