RSS M-380 Owner's Manual page 219

Types of sound
fig.RevExp01.eps
early reflections
direct sound
source
The sound you normally hear is divided into three types: "direct
sound," "early reflections," and "reverberation." The "direct
sound" is the sound that reaches the listener directly from the
source. "Early reflections" are sounds that have reflected one to
several times from the walls or other surfaces of the room.
"Reverberation" is sound that has reflected many times before
reaching the listener.
How sound and time are related
fig.RevExp02.eps
level
direct sound
early reflections
pre-delay
The reflected sounds reach the listener in the following order.
The pre-delay is the time from when the direct sound is heard
until the reverb arrives. The reverb time is the duration until the
reverb disappears.
Tonal character of reverb
The tonal character of reverb is affected by the material of the
walls and other reflective surfaces. This is because the
reflectivity of the surfaces will affect the proportion of high and
low frequencies that are reflected. You can use the DFP (Damp
Filter) to vary this property of the sound. The high-frequency
range or low-frequency range of the reverb will be attenuated as
you decrease the value of the HI FREQ DAMP GAIN or LO
FREQ DAMP GAIN parameters, respectively.
If you want to produce soft-sounding reverb, lower the HI FREQ
DAMP FREQ. If you want to produce crisp-sounding reverb,
raise the LO FREQ DAMP FREQ.
reverberation
listener
reverberation
time
reverb time
REVERB+GATE
fig.AlgoRevwGate.eps
DRY
Input L
4 Band EQ
Reverb
Input R
DRY
This is a mono-in, stereo-out reverb. It provides a gate that can be
used for gating or ducking, allowing you to cut the reverb during its
decay, or to cut the reverb when the level of the original sound is
high.
Reverb
SIZE (Room size)
Size of the room or hall
Value: 5–40 m
TIME (Reverb time)
Length of the reverberation
Value: 0.1–32.0 s
PreDly (Pre-delay time)
Time until the reverb is heard
Value: 0–200 ms
ER Lev (Early reflection level)
Level of the early reflections
Value: -INF–0.0 dB
Diffus (Diffusion)
Amount of scattering for the early reflections
Value: 0–100
Density
Density of the reverb sound
Value: 0–100
LO FREQ DAMP GAIN
Low-frequency attenuation of the reverb sound
Value: -36.0–0.0 dB
LO FREQ DAMP FREQ
Frequency at which the low-frequency region of the reverb sound
begins to be attenuated
Value: 20 Hz–2.00 kHz
HI FREQ DAMP GAIN
High-frequency attenuation of the reverb sound
Value: -36.0–0.0 dB
Appendix
Output L
Gate
Key-In
Output R
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