Korg Electric Keyboard ユーザーズマニュアル

When you operate an AMS (Alternate Modulation Source), 
the modulation destination will be affected as shown in the 
table below.

By using alternate modulation, you can create complex sys-
tems of modulation in which EG, LFO, keyboard tracks, and 
controllers work together.

• You can apply complex change to an LFO or EG, for 

example by using the pitch/filter/amp EG to control the 
frequency or intensity of an LFO that modulates the 
pitch/filter/amp, or by using LFO2 to control the 
frequency of LFO1.

• The tone, EG, and LFO etc. can be controlled not only by 

velocity or joystick, but also from a switch, knob, or 
pedal etc.

• Panning can be controlled in realtime from a controller, 

EG, or LFO etc.

• The filter EG can also be used to control pitch or volume 

at the same time as it controls the filter.

• Controllers etc. can be used to control EG levels or times. 

This lets you shape the EG in realtime.

• Filter/amp keyboard tracking or note number can be 

used to control the EG or LFO according to the keyboard 
pitch that is played.

• Pitch, tone, EG or LFO can be controlled by the tempo of 

the arpeggiator or sequencer.

If Note No. is selected as an “AMS,” the base value will 
be C4.

EXT(+) : Velocity, Poly After, AfterT, JS+Y #01, JS–Y #02, 
JS+Y&AT/2, JS –Y&AT/2, Pedal #04, Slider #18, 
KnobM1[+], KnobM2[+], KnobM3[+], KnobM4[+], 
Damper #64, Porta.SW #65, Soste. #66, Soft #67, SW 1 
#80, SW 2 #81, MIDI CC#83

EXT(+–): KnobM1 #17, KnobM2 #19, KnobM3 #20, 
KnobM4 #21

If Tempo is selected as an AMS, the base value will be 

 

. For example if the AMS for “Pitch” is set to 

, and “AMS Intensity” is set to 12.00, doubling 

the tempo value (

 =120 

→

 240) will raise the pitch one 

octave, and halving the tempo (

 =120 

→

 60) will lower 

the pitch one octave.

A dedicated parameter is also provided.

This will be added to the “Filter Frequency” value. As 
the “Filter Frequency” value increases by 10, the cutoff 
frequency will double (rise one octave).

This will be added to the “Pan” setting.

It is possible to control LFO “Frequency” by using 
Tempo

 and “AMS Intensity.” However if you use the 

“Sync. (MIDI/Tempo Sync.)” function (PROG 5.3–1c), 
the LFO frequency can be synchronized to the tempo 
and note value.

Pitch can be controlled by the filter/amp EG, controllers, or 
tempo etc.

• If you select Filter EG or Amp EG as the “AMS (Pitch 

AMS)” and set “Intensity (AMS Intensity)” to +12.00, the 
pitch will change up to ±1 octave in synchronization 
with the EG.

• If you select Tempo as the “AMS (Pitch AMS)” and set 

“Intensity (AMS Intensity)” to +12.00, doubling the 
tempo (based on 

 =120) will raise the pitch one octave, 

and halving the tempo will lower the pitch one octave.

Pitch EG intensity can be controlled by keyboard tracking, 
controllers, or tempo.

• If you select JS+Y#01 as the “AMS (Pitch EG AMS)” and 

set “Intensity (AMS Intensity)” to +12.00, moving the 
joystick, in the +Y direction will gradually increase the 
effect of the Pitch EG to a maximum of ±1 octave. If 
“Intensity (AMS Intensity)” has a negative value, the 
effect of the Pitch EG will be inverted.

Pitch modulation intensity of the LFO1/2 can be controlled 
by an EG, keyboard tracking, controllers, or tempo etc.

• If you select EG as the “AMS (LFO1/2 AMS),” the pitch 

change width of LFO modulation etc. can be controlled 
in synchronization with the level changes of the EG. 
With positive (+) settings of “Intensity (AMS Intensity),” 
the vibrato effect will gradually deepen as the EG level 
rises, or gradually lessen as the EG level decreases. With 
negative (–)

 settings of “Intensity (AMS Intensity),” the 

LFO phase will be inverted.

• If you select a controller such as SW1 or 2 as the “AMS 

(LFO 1/2 AMS),” you can press the “SW1” or “SW2” 
button when desired to turn on the vibrato effect.

The cutoff frequency of filter A/B can be controlled by the 
pitch/amp EG, controllers, or tempo. Set “AMS 1/2 (Filter 
A/B AMS1/2)” and “AMS 1/2 Intensity” for Filter A or B.

• If you set “AMS1 (Filter A AMS1)” to JS X, and set 

“Intensity (A AMS1 Intensity)” to a positive (+) value, 
moving the joystick toward the right will raise the cutoff 
frequency, and moving it toward the left will lower the 
cutoff frequency. Negative (–) settings will have the 
opposite result.

Parameter

AMS 

→

AMS Value 

→

AMS Intensity

PEG/FEG

 –99...0...+99

AEG

 0...+99

Pitch
Pitch EG Int.
Pitch LFO1/2 Int.

(+12.00)
(+12.00)
(+12.00)

 –1...0...+1[Octave]

 –

 –1...0...+1[Octave]

0...+1[Octave]

 –

0...+1[Octave]

Filter Frequency *6
Resonance
Filter EG Int.
Filter LFO1/2 Int.

(+99)
(+99)
(+99)
(+99)

 –99...0...+99
 –99...0...+99

 –

 –99...0...+99

0...+99
0...+99

 –

0...+99

Amp
Amp LFO1/2 Int.
Pan *7

(+99)
(+99)
(+50)

value x(0...1...8)

 –99...0...+99
 –63...0...+63

 –

0...+99
0...+63

EG Level
EG Time
LFO Frequency

(+66)
(+49)
(+99)

 –
 –

value x(1/64...1...64)

 –
 –

value x(1...64)