Pizza Oscillator architecture is centered around 3 oscillators: MAIN, OCT,
and RATIO.
The core of the module is digital FM (phase) modulation, where the MAIN
oscillator is the carrier while OCT and RATIO are the modulators. Both
OCT and RATIO can be WAVE-shaped (SQUARE-SINE-SAW) before
applied to the FM. The amount of FM is set by the FM INDEX crossfader
that goes either to OCT or RATIO oscillator side. It can be modulated by
aCV, which is attenuverted by the INDEX MOD knob.
The output of the MAIN oscillator can be wave-folded and then ring-
modulated with either of the modulating oscillators in the SHAPE section.
The OCT oscillator has adedicated output that is affected by the WAVE
shaper. The OCT oscillator can be replaced by an EXTernal signal for
more advanced FM duties.
MAIN OUT and OCT OSC OUT can also be affected by the built-in bipolar
VCA that is only accessible via assigning the CTRL knob and CV.
The MAIN oscillator also has a PULSE output taken before the FM
modulation. The pulse width can be modulated by the FM INDEX.
Architecture
PITCH
DETUNE
VO CT
SYNC
WAVE
FOLD
RING
FM INDEX
INDEX MOD
MAIN
CARRIER
OSCILLATOR
RATIO
OSCILLATOR
EXT
O CTAVE
OSCILLATOR
SQUARE SINE SAW
PWM by FM INDEX
PHASE
MODULATION
INTERVALS IN
RATIO TOWARDS
THE CARRIER
FREQUENCY
RATIO: 1/2, 1, 2, 4
ONLY OCTAVES
HARD 0 SOFT
MAIN X RATIO 0
MAIN X OCT
SHAPE
OCT OSCMAIN OUT
PULSE
SHAPE
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