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

VPM 4 OP

VPM 4 OP
This Patch is a four-operator VPM synthesizer, with two carrier-modulator pairs.
The two pairs can be used to create layered sounds, with each contributing a
different sonic element. This Patch is slightly more DSP-efficient than the more
flexible VPM 4 OP Select.
VPM 4 OP
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 and OP 3
Oscillator
The carrier operators determine the basic pitches and amplitude envelopes, while
the modulator operators change the timbre of the carriers. Modulator OP 2 controls
the timbre of Carrier OP 1, and Modulator OP 4 controls the timbre of Carrier OP 3.
Ratio
1.0-31.0. This selects the basic tuning for the oscillator.
Fine
0.0-100.0. This allows you to fine-tune the ratio. You can think of this as the digits to
the right of the decimal. For instance, setting the Ratio to 3.0 and Fine to 53.0 results
in an actual ratio of 3.53. Setting Fine to 100 is the same as increasing the Ratio by 1.
204
Feedback
OP 2
VPM modulation
OP 1
Feedback
OP 4
VPM modulation
OP 3
VPM
Audio output
OASYS PCI