19
VPM
This engine is a VPM (Variable Phase Modulation) oscillator. The engine features a simple struc-
ture with one carrier and one modulator, but allows you to create a wide range of sounds.
Sixteen oscillator types are available for this VPM oscillator.
TYPE knob [Sin1...Throat]
This selects the oscillator type to use.
The name of the oscillator type will be indicated on the MULTI ENGINE display.
Tip: For the last four types after Decay1, setting Shape Mod Int to “–100%” will disable com-
pletely the effect of the EG.
Sin1: A basic oscillator type, using a sine wave for both the carrier and modulator.
Sin2: Sine wave carrier and a modulator with self-feedback.
Sin3: Sine wave carrier with a 3x harmonics modulator.
Sin4: Sine wave carrier with 5x harmonics modulator.
Saw1: Modulated sawtooth carrier basic type.
Saw2: Carrier using a sine wave to simulate a sawtooth.
Squ1: Square wave carrier type.
Squ2: Carrier using a sine wave to simulate a square wave.
Fat1:
1/4 subharmonic modulator with self-feedback and driven carrier output, emphasizing the
lower harmonics.
Fat2:
3/4 subharmonic modulator with self-feedback and driven carrier output, emphasizing the
lower harmonics.
Air1: Noise-modulated sine wave carrier.
Air2: Sine wave carrier modulated by both noise and a sine wave.
Decay1: Type with decaying modulation amount.
Tip: You can edit the relative offsets of the internal EG decay time of the VPM (see block dia-
gram) by using the parameters in PROGRAM EDIT mode “Button 10 (MULTI ENGINE)”
(p.36).
Decay2: Type with strong decaying modulation amount.
Creep, Throat: Experimental, somewhat atonal type with complex and evolving modulations.
carrier
mod. depth (index)
drive
mod
phasephase
eedback
pitch ratio
pitch
eg
shape mod int.
mod decay
noise
noise depth
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