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ZOOM B9.1ut
Effect Types and Parameters
COMP (Compressor) module
This module includes a compressor which attenuates high-level signal components and boosts low-level
signal components to keep the signal level within a certain range, and a limiter which controls signal peaks to
keep the signal level below a certain limit.
Compressor
This is a compressor which stresses the sense of attack.
PARM1 PARM2 PARM3 PARM4
Sense
0 – 50
Attack
1 – 10
Release
1 – 10
Level
2 – 100
Adjusts the compressor sensitivity.
Higher setting values result in
higher sensitivity.
Adjusts the compressor attack rate.
Adjusts the delay between the point
where the signal level falls below
the threshold level and the
compressor release.
Adjusts the signal level after
passing the module.
DualComp (Dual Compressor)
This is a compressor which allows separate settings for the low frequency and high frequency range.
PARM1 PARM2 PARM3 PARM4
SenseHi
0 – 50
SenseLo
0 – 50
XoverFreq
1 –10
Level
2 – 100
Adjusts the compression depth in
the high frequency range.
Adjusts the compression depth in
the low frequency range.
Adjusts the crossover point
between the high frequency and
low frequency range.
Adjusts the signal level after
passing the module.
M Comp (M Compressor)
This is a compressor with natural operation.
PARM1 PARM2 PARM3 PARM4
Threshold
0 – 50
Ratio
1 – 10
Attack
1 – 10
Level
2 – 100
Adjusts the reference signal level
for the compressor action.
Adjusts the compression ratio of
the compressor.
Adjusts the compressor attack rate.
Adjusts the signal level after
passing the module.
Limiter
This is a limiter that suppresses signal peaks above a certain reference level.
PARM1 PARM2 PARM3 PARM4
Threshold
0 – 50
Ratio
1 – 10
Release
1 – 10
Level
2 – 100
Adjusts the reference signal level
for the limiter action.
Adjusts the compression ratio of
the limiter.
Adjusts the delay between the point
where the signal level falls below
the threshold level and the limiter
release.
Adjusts the signal level after
passing the module.
WAH/EFX1 (Wah/Effects 1) module
This module comprises wah and fi lter effects as well as special effects such as ring modulator and octave.
AutoWah
This effect varies wah in accordance with picking intensity.
A-Resonance (Auto Resonance)
This effect varies the resonance fi lter frequency in accordance with picking intensity.
The above two effect types have the same parameters.
PARM1 PARM2 PARM3 PARM4
Position
Befr, Aftr
Sense
-10 – 10
Resonance
0 – 10
DryMix
0 – 100
Selects the connection position of
the WAH/EFX1 module. Available
settings are "Befr" (before pre-amp
section) or "Aftr" (after pre-amp
section).
Adjusts the effect sensitivity.
Negative values result in downward
fi lter action.
Adjusts the intensity of the effect
character.
Adjusts the original sound mixing
ratio.
AutoFilter
This is a resonance fi lter with a sharp envelope.
PARM1 PARM2 PARM3 PARM4
Position
Befr, Aftr
Sense
-10 – 10
Peak
0 – 10
DryMix
0 – 100
See "A-Resonance (Auto
Resonance)".
Adjusts the effect sensitivity. Adjusts the Q value of the fi lter.
Adjusts the original sound mixing
ratio.