bastl-instruments/pizza

Pizza

Bastl Instruments

Digital FM oscillator with 3 internal oscillators (MAIN carrier, OCT and RATIO modulators), wave-folding, ring modulation, and assignable CTRL.195

Capabilities 2

2-Operator FM Synthesisfm-synthesis
MAIN oscillator is the FM carrier; OCT and RATIO oscillators are modulators. FM INDEX crossfader controls modulation depth and source selection.195
Voltage-Controlled Oscillatorvco
Three internal oscillators (MAIN, OCT, RATIO) with V/OCT input, octave transposition, detune, and fine-tune modes.195

Jacks 9 — 6 in / 3 out

NameSignalVoltageDescription
Inputs (6)
CTRL CVcv-6V to 6VCV input for the assignable CTRL knob; when plugged, CTRL knob acts as an attenuverter for this CV.195
Assignable destinations mirrors CTRL knob
DetuneCTRL knob acts as attenuverter for this CV when patched.195 Linear FMCTRL knob acts as attenuverter for this CV when patched.195 Exponential FMCTRL knob acts as attenuverter for this CV when patched.195 RATIO OSC RatioCTRL knob acts as attenuverter for this CV when patched.195 OctaveCTRL knob acts as attenuverter for this CV when patched.195 OCT OSC RatioCTRL knob acts as attenuverter for this CV when patched.195 OCT OSC Exp FMCTRL knob acts as attenuverter for this CV when patched.195 RATIO OSC Exp FMCTRL knob acts as attenuverter for this CV when patched.195 FM INDEX modulationCTRL knob acts as attenuverter for this CV when patched.195 second FM INDEX modulationCTRL knob acts as attenuverter for this CV when patched.195 WaveshapeCTRL knob acts as attenuverter for this CV when patched.195 FoldingCTRL knob acts as attenuverter for this CV when patched.195 Ring ModulationCTRL knob acts as attenuverter for this CV when patched.195 Bipolar VCACTRL knob acts as attenuverter for this CV when patched.195 Envelope VCA modeCTRL knob acts as attenuverter for this CV when patched.195
EXTaudio-6V to 6VExternal audio input that replaces the OCT oscillator as the FM modulator when a cable is plugged in.195
FM INDEX CVcv-6V to 6V195
SHAPE CVcv-6V to 6V195
SYNCgate-6V to 6VResets the phases of all oscillators for hard sync; also triggers the built-in AD envelope in Envelope VCA mode.195
V/OCTcv-5V to 8VExternal V/OCT pitch control with calibration and optional quantization.195
Outputs (3)
MAIN OUTaudio-5V to 5VMAIN oscillator output after FM modulation, wave-folding, and ring modulation; affected by bipolar VCA when assigned.195
OCT OSC OUTaudio-5V to 5VOCT oscillator output after WAVE-shaping; usable as sub-oscillator or to reinforce the fundamental. Affected by bipolar VCA when assigned.195
PULSEaudio-5V to 5VPulse output of the MAIN oscillator taken before FM modulation (pulse width modulated by FM INDEX), or optionally the RATIO oscillator output via boot-time toggle.195

Parameters 14

NameTypeRangeBehavior
CTRL knobknob—Assignable control; serves as static knob without CV or as attenuverter when CV is patched. Destinations include: OCT OSC WAVE, MAIN WAVE FOLD, OUTPUT VCA, MAIN RING MOD, Octave, OCT OSC Ratio, OCT OSC Exp FM, RATIO OSC Exp FM, FM INDEX modulation, second FM INDEX modulation, Waveshape, Folding, Ring Modulation, Bipolar VCA, Envelope VCA mode.195
Assignable destinations
Detune195 Linear FM195 Exponential FM195 RATIO OSC Ratio195 Octave195 OCT OSC Ratio195 OCT OSC Exp FM195 RATIO OSC Exp FM195 FM INDEX modulation195 second FM INDEX modulation195 Waveshape195 Folding195 Ring Modulation195 Bipolar VCA195 Envelope VCA mode195
FM INDEXfader—Center position = no FM. Moving left applies RATIO oscillator modulation; moving right applies OCT oscillator modulation. Pulse width of PULSE output is also modulated by FM INDEX position.195
INDEX MODknob—Attenuverter for the FM INDEX CV input. Right = positive modulation (as if moving FM INDEX fader right); left = inverted modulation (as if pushing FM INDEX fader left).195
OCT OSC buttonbutton—Selects one of 4 octave intervals for the OCT oscillator relative to the MAIN carrier.195
OCTAVE mode (PITCH)menu_setting-4octave – 4octave195
PITCH buttonbutton—Single press switches between OCTAVE and DETUNE modes. Long press enters TUNE mode (semitone/fine-tune). Hold 6 seconds for Coarse Pitch mode. Long press again to return to normal.195
PITCH knobknob—In OCTAVE mode: adjusts octave (+/-4 octaves). In DETUNE mode: detunes OCT and RATIO OSC from MAIN (right=exponential, left=linear Hz). In TUNE mode: adjusts semitone transposition (+/-12 semitones) or fine-tune (+/-120 cents). In Coarse Pitch mode: sets pitch freely across a wide frequency range.195
RATIO denominatormenu_setting1 – 16195
RATIO numeratormenu_setting1 – 16195
RATIO OSC buttonbutton—Selects one of 4 user-settable frequency ratios for the RATIO oscillator. Long press enters RATIO SETTING mode to edit each ratio (numerator 1-16, denominator 1-16).195
SHAPE buttonbutton—Selects SHAPE section mode: WAVE (morphs modulator waveforms square-sine-saw), FOLD (two wave-folding algorithms on MAIN), or RING (ring modulation between MAIN and OCT/RATIO). Long press enters CTRL assignment mode.195
SHAPE faderfader—Center = neutral (no shaping). Left/right sides activate different shaping modes depending on which SHAPE mode (WAVE, FOLD, RING) is active via the SHAPE button.195
TUNE finemenu_setting-120cent – 120cent195
TUNE semitonemenu_setting-12semitone – 12semitone195

Firmware history 2 versions

VersionReleasedNotes
1.12—195
1.1—195

References 2

  1. [195]
    Bastl Pizza FM & Wave-Shape Oscillator Manual (firmware 1.1)manual
    source 195 canonical ↗ archived ↗
    ● verified 2026-05-06
  2. [196]
    Bastl Pizza product pageproduct_page
    source 196 canonical ↗ archived ↗
    ⚠ verified 2026-05-06 · manufacturer changed since last verified