St.rndm filter (stereo random filter), St.rndm filter, Effect – KORG MICROX X50 User Manual

Page 116: Stereo random filter)

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109

EFFECT

a: FreqBottm, a: FreqTop

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

b: Swp Mode

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.

d: Envelope Sens

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.

e: Envelope Shape

This parameter determines the sweep curve for auto-wah.

f: lfoF, g: BPM/MIDI Sync

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.

g: BPM, g: Base, g: Times

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.

10: St.Rndm Filter

(Stereo Random Filter)

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

a: LFO Wave, c: Freq, d: Step

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.

Frequency

Bottom=25

Top=75

Higher

Max

Zero

Higher

D

-mod

Frequency

Bottom=60

Top=30

Higher

Max

Zero

Higher

D

-mod

Sweep Mode=D-mod

Frequency

Bottom=25

Top=75

Higher

Frequency

Bottom=75

Top=25

Higher

Sweep Mode=Auto

Envelope

Envelope

Time

Wah

Woo

Woo

Woo

Envelope

Wah

Wah

Time

Woo

Woo

Wah

Wah

Time

Level

Envelope

value = 0...–100

value = 0...+100

Envelope Shape

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

Sets the balance between the effect and dry sounds

,

(Source)

Off...Tempo

Selects the modulation source of the effect balance

(Amount)
Sets the modulation amount of the effect balance

–100...+100

Filter

Left

Right

Wet / Dry

Wet / Dry

Stereo In - Stereo Out

Filter

LFO Phase

LFO: Step-Tri/Random

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