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Yamaha DSP-AX1 Owner's Manual: Dly (surround Delay); Room Size

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S. DLY (Surround Delay)
Function .................... This parameter adjusts the delay between the direct sound and the first reflection in the surround sound field.
Control Range ........... 0 - 49 milliseconds (The range depends on the signal format.)
Description ................ When Dolby Digital signals are decoded: the larger the parameter, the later the surround sound source begins.
When a non-Dolby Digital program is decoded: the larger the parameter, the later the surround sound field
begins.
No surround sound source is produced.
Dolby Digital or DTS Input
S. DELAY
S. DELAY

ROOM SIZE

Function .................... This parameter adjusts the apparent size of the surround sound field. The larger the value, the larger the surround
sound field becomes.
Control Range ........... 0.1 - 2.0
Description ................ As the sound is repeatedly reflected around a room, the larger the hall is, the longer the time between the original
reflected sound and the subsequent reflections. By controlling the time between the reflected sounds, you can
change the apparent size of the virtual venue. Changing this parameter from one to two, doubles the apparent
length of the room.
Sound Source
Digital Sound Field Parameter Descriptions
Direct Sound
SURROUND (LS/RS)
SURROUND (LS/RS)
S Sound Field
Time
S. INIT.
S. INIT.
DELAY
DELAY
Sound Source
Time
Time
Small
value
Small value = 0.1
Others
The surround sound field is not reproduced.
Direct Sound
S Sound Field
Time
S. DELAY
S. DELAY
Primary
Reflected
Sound
Time
Large value
Large value = 2.0
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