Yamaha DSP-A3090 - Manual (Page 64)

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DESCRIPTIONS OF THE DIGITAL SOUND FIELD PARAMETERS
Not all of the following parameters are found in every program.
● ROOM SIZE
How it Affects the Sound:
Changes the apparent size of the music venue. The larger the
value, the larger the simulated room will sound.
What it Does:
Adjusts the timing between the early reflections. Early reflections
are the first group of reflections you hear before the subsequent,
dense reverberation begins.
Control Range:
0.1 – 2.0
Standard setting is 1.0.
Changing this parameter from 1 to 2 increases the apparent
volume of the room eight times (length, width, and height all
doubled).
● INIT. DLY (Initial Delay)
How it Affects the Sound:
Changes the apparent distance from the source sound.
Since the distance between a sound source and a reflective
surface determines the delay between the direct sound and the first
reflection, this parameter changes the location of the sound source
within the acoustic environment.
What it Does:
Adjusts the delay between the direct sound and the first reflection
heard by the listener.
Control Range:
1 – 99 milliseconds
For a small living room this parameter would be set for a small
value. Large values for a big room. Larger values produce an echo
effect.
Level
Direct sound
Early reflections
Time
Small space
Small
Level
Direct sound
Early reflections
Time
Large
Level
Direct sound
Early reflections
Time
Large space
INIT. DLY INIT. DLY INIT. DLY
Level
Time
Small
Level Level
Time Time
Large
Direct sound
Early reflections