Korg KORG Pa50 user manual Mod./P.Shift, Tremolo, EnvelTremol

MOD./P.SHIFT

Other modulation and pitch shift effects

032: Tremolo

(Stereo Tremolo)

This effect modulates the volume level of the input signal. The effect is stereo, and offsetting the LFO of the left and right phases from each other produces a tremolo effect between left and right.

Stereo In - Stereo Out
Left	Wet / Dry
	Tremolo
	Tremolo
Right	Wet / Dry
	LFO Phase
LFO: Tri/Sin/Vintage/Up/Down	LFO Shape

	LFO Waveform	Triangle, Sine, Vintage, Up, Down
a	Selects LFO Waveform						☞
	LFO Shape			–100...+100
	Determines how much the LFO waveform is changed			☞ Fx:020
b	LFO Phase [degree]			–180...+180
	Sets the LFO phase difference between the left and right						☞
	LFO Frequency [Hz]		0.02...20.00Hz
	Sets the LFO speed		☞ Fx:009,
c	Src					Off...Tempo
	Selects the modulation source of LFO speed
	Amt		–20.00...+20.00Hz
	Sets the modulation amount of LFO speed
	BPM/MIDI Sync				Off, On
	Switches between using the frequency of the LFO speed and using the
	tempo and notes		☞ Fx:009,
	BPM				MIDI, 40...240
d	Selects MIDI Clock and assigns tempo						☞ Fx:009
	Base Note			☞ Fx:009
	Selects the type of notes that specify the LFO speed
	Times			x1...x16
	Sets the number of notes that specify the LFO speed			☞ Fx:009
	Depth			0...100
	Sets the depth of LFO modulation
e	Src			Off...Tempo
	Selects the modulation source of the depth of modulation
	Amt			–100...+100
	Sets the modulation amount of the depth of modulation
	Wet/Dry		Dry, 1:99...99:1, Wet
	Table , “Sets the balance between the effect and dry sounds,” on page 175
f	Src			Off...Tempo
	Table , “Selects the modulation source of the effect balance,” on page 175
	Amt					–100...+100
	Table , “Sets the modulation amount of the effect bal-
	ance,” on page 175

a:LFO Waveform

This parameter selects the LFO waveform. Vintage wave simulates the characteristics of the tremolo created on a guitar amplifier. Combining this effect with the Amp Sim- ulation will make a realistic, vintage tremolo amplifier sound.

Tremolo - LFO Waveform

Triangle Sine Vintage Up Down

Effects 195

Mod./P.Shift

b: LFO Phase [degree]

This parameter determines the difference between the left and right LFO phases. A higher value will simulate the auto-pan effect in which the sound is panned between left and right.

033: EnvelTremol

(Stereo Envelope Tremolo)

This effect uses the input signal level to modulate a stereo tremolo. You can simulate a tremolo effect that becomes deeper as it fades out while the level gets lower.

Stereo In - Stereo Out
Left			Wet / Dry
		Tremolo
		Tremolo
Right			Wet / Dry
		LFO Phase
	LFO: Tri/Sin/Vintage	LFO Shape
+	Envelope	Envelope Shape
	Envelope Sens

	Envelope Sens (Envelope Sensitivity)		0...100
a	Sets the envelope sensitivity of the input signal
	Envelope Shape		–100...+100
	Sets the envelope curve shape of the input signal
	LFO Waveform	Triangle, Sine, Vintage
b	Selects LFO Waveform
	LFO Shape		–100...+100
	Determines how much the LFO waveform is changed		☞ Fx:020
c	LFO Phase [degree]		–180...+180
	Sets the LFO phase difference between the left and right		☞ Fx:032
	LFO Frequency [Hz]		0.02...20.00Hz
d	Sets the LFO speed		☞
	Envelope Amount [Hz]	–20.00...+20.00Hz
	Sets the changes of the LFO speed according to the input signal level☞
	Depth		0...100
	Sets the depth of LFO modulation		☞
e
	Envelope Amount		–100...+100
	Sets the changes of the modulation depth according to the input signal level
	☞
	Wet/Dry	Dry, 1:99...99:1, Wet
	Table , “Sets the balance between the effect and dry sounds,” on page 175
f	Src		Off...Tempo
	Table , “Selects the modulation source of the effect balance,” on page 175
	Amt		–100...+100
	Table , “Sets the modulation amount of the effect bal-
	ance,” on page 175

d:LFO Frequency [Hz], d: Envelope Amount [Hz],

e:Depth, e: Envelope Amount

These parameters set the modulation via an envelope (input signal level).

The “LFO speed” is obtained by adding the “LFO Fre- quency” value to the “Envelope Amount” value multi- plied by the input signal. The LFO modulation depth is obtained by adding the Depth value to the “Envelope Amount” value multiplied by the input signal level.

•The following example indicates that the “Depth” is 0 with an LFO Frequency of 1.0Hz and the maximum input, and that the “Depth” is 100 with a Frequency of

8.0Hz with zero input.

“LFO Frequency [Hz]”=8.0, “Envelope Amount [Hz]”=–7.0