Korg Electric Keyboard ユーザーズマニュアル

The sweep width and direction of the wah filter are determined 
by the “FreqBottm” and “FreqTop” settings.

This parameter changes the wah control mode. Setting “Swp 
Mode” to Auto will select an auto-wah that sweeps according to 
envelope changes in the input signal level. Auto-wah is frequently 
used for funk guitar parts and clav sounds.
When “Swp Mode” is set to Dmod, you can control the filter 
directly via the modulation source in the same way as a wah 
pedal.
When “Swp Mode” is set to LFO, the effect uses LFO to sweep in 
cycle.

This parameter sets the sensitivity of auto-wah. Increase the value 
if the input signal is too low to sweep. Reduce the value if the 
input signal is so high that the filter is stopped temporarily.

This parameter determines the sweep curve for auto-wah.

When “BPM/MIDI Sync”=Off, the LFO speed uses the lfoF 
parameter setting. When “BPM/MIDI Sync”=On, the LFO speed 
follows the “BPM”, “Base”, and “Times” settings.

One cycle of LFO sweep is obtained by multiplying the length of a 
note (

…) (selected for “Base”, in relation to the tempo specified 

in (“BPM”, or the MIDI Clock tempo if “BPM” is set to MIDI) by 
the number specified in the Times parameter.

This stereo band pass filter uses a step-shape waveform and 
random LFO for modulation. You can create a special effect 
from filter oscillation.

When “LFO Wave” is set to Step-Tri, LFO is a step-shape, triangle 
waveform. The “Freq” parameter sets the original triangle wave-
form speed. Changing the “Step” parameter enables you to adjust 
the width of the steps.

a

LFO Wave (LFO Waveform)
Selects LFO Waveform

Step-Tri, Random

☞

b

LFO Phase

–180...+180deg

Sets the LFO phase difference between the left and right

☞

c

Freq (LFO Frequency)
Sets the LFO speed

0.02...20.00Hz

☞

,

(Source)

Off...Tempo

Selects the modulation source used for both LFO speed and step 
speed

(Amount)

–20.00...+20.00Hz

Sets the modulation amount of LFO speed

d

Step (LFO Step Frequency)

0.05...50.00Hz

Sets the LFO step speed (speed that changes in steps)

☞

,

 

(Amount)

–50.00...+50.00Hz

Sets the modulation amount of LFO step speed

e

Manual
Sets the filter center frequency

0...100

Resonance
Sets the resonance amount

0...100

f

BPM/MIDI Sync

Off, On

Switches between using the frequency of the LFO speed and using 
the tempo and notes

☞

 Fx:09, 

BPM
Selects MIDI Clock and assigns tempo

MIDI, 40...240

☞

 Fx:09, 

☞

Base (Base Note)

             

Selects the type of notes that specify the LFO speed

☞

 Fx:09

Times

x1...x16

Sets the number of notes that specify the LFO speed

☞

 Fx:09

g

StepBase (Step Base Note)

                 

Selects the type of notes to specify the LFO step speed

☞

, 

Times

x1...x32

Sets the number of notes to specify the LFO step speed

☞

h

Depth

0...100

Sets the modulation depth of filter center frequency

(Source)
Selects the modulation source of filter modula-
tion

Off...Tempo

(Amount)
Sets the modulation amount of filter modulation

–100...+100

i

W/D (Wet/Dly)

–Wet...–1:99, Dry, 1:99...Wet

☞

,

(Source)

Off...Tempo

(Amount)
Sets the modulation amount of the effect balance

–100...+100