Yamaha RX-V1900BL ユーザーズマニュアル

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Advanced sound configurations
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■ Sound field parameter descriptions
Use the following sound field parameters to customize the sound field programs in detail.
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To change sound field parameter settings, see page 67 for details.
Sound field parameter
Features
INIT.DLY
P.INIT.DLY
S.INIT.DLY
SB INIT.DLY
Initial delay. Presence, surround, and surround back sound field initial delay. Changes the 
apparent size of the sound field by adjusting the delay between the direct sound and the first 
reflection heard by the listener. The smaller the value, the smaller the sound field seems to the 
listener.
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When you adjust the initial delay parameters, we also recommend that you adjust the 
corresponding room size parameters likewise. 
Control range: 1 to 99 ms (INIT.DLY and P.INIT.DLY)
1 to 49 ms (S.INIT.DLY and SB INIT.DLY)
ROOM SIZE
P.ROOM SIZE
S.ROOM SIZE
SB ROOM SIZE
Room size. Presence, surround, and surround back room size. Adjusts the apparent size of the 
sound field. The larger the value, the larger the surround sound field becomes. 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.
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When you adjust the room size parameters, we also recommend that you adjust the 
corresponding initial delay parameters likewise.
Control range: 0.1 to 2.0
Source sound
Early 
reflections
Time
Time
Time
Delay
Delay
Delay
Sound source
Reflection face
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Small value = 1 ms
Large value = 99 ms
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Time
Time
Time
Source sound
Early 
reflections
Small value = 0.1
Large value = 2.0
Sound source