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Yamaha DSP-AZ1 Owner's Manual: Digital Sound Field Parameter Descriptions

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DIGITAL SOUND FIELD PARAMETER DESCRIPTIONS

You can adjust the values of certain digital sound field parameters so the sound fields are recreated accurately in your listening room. Not all
of the following parameters are found in every program.
I EFCT TRIM (Effect Trim)
Function
This parameter adjusts the level of all the effect sounds within a narrow range.
Control range –3 dB – +3 dB
Description
Depending on the acoustics of your listening room, you may want to increase or decrease the effect level relative to the
direct sound.
I INIT. DLY (Initial Delay)
Function
This parameter changes the apparent distance from the source sound by adjusting the delay between the direct sound and
the first reflection heard by the listener.
Control range 1 – 99 ms
Description
The smaller the value, the closer the sound source seems to the listener. The larger the value, the farther the apparent
distance seems. For a small room, this parameter would be set to a small value, for a large room, set it to a large value.
I ROOM SIZE/P. ROOM SIZE for the presence sound field
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
E-
96
Time
INIT. DLY
Sound source
Reflection face
Small value = 1 ms
Time
Small value
Small value = 0.1
Source sound
Primary reflected sound
Time
INIT. DLY
Source sound
Primary reflected sound
Time
Time
INIT. DLY
Large value = 99 ms
Time
Large value
Large value = 2.0

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