Yamaha DSP-Z9 Mode D'emploi page 106

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SOUND FIELD OPTIONS
■ Liveness (Liveness)
This parameter 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". The Liveness parameter
lets you adjust the early reflection decay rate, and thus the
"liveness" of the room.
Control range: 0 – 10
Dead
Time
Small reflected
sound
Small value = 0
■ Dialogue Lift (Dialog lift)
This parameter adjusts the height of the front and center
channel sounds by assigning some of the front and center
channel elements to the presence speakers. The larger the
parameter, the higher the position of the front and center
channel sound.
Choices: 0, 1, 2, 3, 4, 5
104
Source sound
Live
Time
Large
reflected sound
Large value = 10
■ Rev. Time (Reverberation time)
This parameter adjusts the amount of time it takes 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 – 5.0 sec
Reverberation
60 dB
REV.TIME
Sound source
Short
reverberation
Small value = 1.0 s
Source sound
Early reflections
60 dB
REV.TIME
Long
reverberation
Large value = 5.0 s

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