Roland MV-8800 Appendices page 22

Effect Block
04 Reverb & Gate
Reverb
This is a high-quality digital reverb. Imbues sound with
reverberations, making it seem as if it were being played in a
hall.
Room Size
Value: 5–40 m
Sets the size of the room. For example, the setting "10m"
gives you reverb as it would sound in a single space 10
meters wide.
Time
Value: 0.1–32 sec
Sets the reverb time in seconds.
Pre Delay
Value: 0–200 msec
Sets the delay time between the source sound and the
point at which the reverb sound is started. This indicates
distance from the source of the sound.
Diffusion
Value: 0–100
Increasing this value intensifies the sense of spatial
width. This is effective when playing back in stereo.
Density
Value: 0–100
Increasing this value makes the reverb sound denser.
For hall or garage sounds, make this thinner.
ER Level
Value: 0–100
Raising the value increases the volume of the early
reflections.
• Early reflections: The first sounds reflected directly from the
walls and other surfaces. A sort of "patter" sound is audible
at the beginning of the reverb sound.
Effect Level
Value: 0–100
Sets the volume of the reverb sound. Lower it to get a
balance with the direct level.
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MV-8800 Appendices
Low Damp Freq
Value: 50–4000 Hz
Sets the upper frequency limit of the range to be damped
by "Low Damp." The Low Damp function damps the low
frequency band of the reverb sound quicker than other
bands, which makes for a clearer reverb effect.
Low Damp Gain
Value: -36–0 dB
Sets the degree of the Low Damp.
High Damp Freq
Value: 1–20 kHz
High Damp, by attenuating the higher frequencies first,
makes the reverb sound more natural.Sets the lower
frequency limit of the range to be dampened.
• In the natural world, the high frequencies in reverberation
die out quicker than other bands.
High Damp Gain
Value: -36–0 dB
Sets the degree of the High Damp.
• By combining Low Damp and High Damp, you can indicate
the qualities of the room such as surface material (or the
sound absorption properties thereof.)
High Cut Freq
Value: 0.2–20 kHz
Upper band than this frequency of the reverb sound are
gently cut to make the reverberation more stable. This
does not make time-based changings.
Direct Level
Value: 0–100
Sets the volume of the source sound.
• To make the gate settings easy when using the gate
function to get special reverb effects, make reverb times
longer. In such instances, instead of using Low Damp or
High Damp to change the tone, do this with the High Cut
frequency settings or through equalization at an earlier
stage. To get sharp gate reverb, make the attack and
release times extremely short, and set expression time to
match the rhythm with the hold time setting. To get reverse
reverb, make the attack time plenty long, and keep the
release time short.