Sound Field Parameter Descriptions - Yamaha RX-V3900 Owner's Manual

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■ Sound field parameter descriptions

You can adjust the values of certain digital sound field parameters so that the sound fields are recreated accurately in your
listening room. Not all of the following parameters are found in every program.
Sound field parameter
Decode Type
Init. Delay
Sur. Init.Delay
SB. Init. Delay
Room Size
Sur. Room Size
SB. Room Size
70
En
Decoder type. Select the decoder used with the selected sound field program. The decoder parameters for
"Surround Decoder" vary depending on the selected decoder type. See page 73 for details.
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.
y
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. Delay)
1 to 49 ms (Sur. Init. Delay and SB Init. Delay)
Time
Delay
Sound source
Reflection face
Small value = 1 ms
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.
y
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
Sound source
Small value = 0.1
Features
Source sound
Early
reflections
Time
Delay
Source sound
Early
reflections
Time Time
Time
Delay
Large value = 99 ms
Time
Large value = 2.0