Vpm 4 Op Stack - Korg Soundlink DRS OASYS PCI Patches & Effects Manual

VPM

VPM 4 OP Stack

This Patch is a four-operator VPM synthesizer, with one carrier and three
modulators. The three modulators control each other in series, and then the result
controls the timbre of the carrier. This Patch is slightly more DSP-efficient than the
more flexible VPM 4 OP Select.
VPM 4 OP Stack
VPM stands for Virtual Phase Modulation, in which the phase of one oscillator (the
Carrier) is modulated by another oscillator (the Modulator), producing a complex
timbre. The combination of an oscillator and its amplitude envelope is known as an
"operator." VPM is particularly well-suited to bells and electric pianos, although it
can produce many other sounds as well.
Carrier - OP 1
Oscillator
The carrier operator determines the basic pitch and amplitude envelope, while the
modulator operators change the timbre of the carrier.
Ratio
1.0-31.0. This selects the basic tuning for the oscillator.
OASYS PCI
Feedback
OP 4
VPM modulation
OP 3
VPM modulation
OP 2
VPM modulation
OP 1 Audio output
VPM 4 OP Stack
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