Rossum Electro-Music Panharmonium
Analyze any sound, resynthesize it into infinite harmonics
26 HP Eurorack module
Panharmonium is a spectral resynthesizer that analyzes the harmonic content of any audio input and uses that analysis to drive a bank of up to 33 digital oscillators. It can faithfully recreate input spectra in real time, freeze and morph them, or mutate them into clangorous, swarming textures, making it equally at home as a drone machine, a harmonic arpeggiator, or a radical sound design tool.
Features
- Real-time spectral analysis using configurable slice clock from 17ms to 6400ms
- Up to 33 digital oscillators for spectral resynthesis
- Center Frequency control sweepable from 20Hz to 11.5kHz with CV control
- Bandwidth control selectable from narrow to wide bandpass or narrow to wide notch with CV control
- Freeze button and Blur parameter for spectral freeze and lag processing
- Feedback control for self-sustaining resynthesis feedback loop
- Six waveform options: sine, triangle, sawtooth, pulse, crossfading sine, crossfading sawtooth
- Polyphonic glide with independent glide circuit per oscillator
- Spectral Warping mode that shifts harmonic elements individually
- Drums Mode optimized for percussive input analysis
- Semitone-quantized frequency adjustment mode
- Freeze Tap Mode for manually triggered slice capture and sustain
Controls & Jacks (60)
- Tap/Opt — Manually triggers analysis or toggles tap mode functionality
- Mix Button — Sets the balance between original input audio and resynthesized audio
- Blur — Spectral lag processor that controls how quickly the spectrum can change; maximum blur freezes the spectrum
- Spectra 1 — Selects spectral resynthesis voice type 1
- Output Mode — Selects between two routings of input audio and Panharmonium output
- Glide — Sets the amount of polyphonic glide; each oscillator has its own glide circuit
- SPECTRA — Selects number of spectral bands for analysis
- Spectra LED 1 — Indicator LED for Spectra voice 1
- Octave — Shifts the pitch of the output by octaves
- Slice — Sets the rate at which incoming audio is transformed to spectral data; shorter times result in real-time data, longer times create rhythmic
- Waveform — Selects oscillator waveform: sine, triangle, sawtooth, pulse, and crossfading variants
- Spectra LED 2 — Indicator LED for Spectra voice 2
- Feedback — Routes resynthesized audio back into the processing chain; maximum creates self-sustaining output
- Center Freq CV Level — CV modulation level for Center Freq parameter
- Center Freq — Controls the center frequency of the analysis band
- Mix Knob — Sets the balance between original input audio and resynthesized audio
- Multiplier — Multiplies the Slice parameter for extended timing control
- Voice — Selects the number of oscillators from 1 to 33 for spectrum resynthesis
- Tap/Sync — External clock or trigger input for analysis rate control
- Output Mode — Selects between two routings of input audio and Panharmonium output
- CV2 Attenuator — Attenuator for assignable CV input 2
- Center Freq CV — Control voltage for Center Freq parameter
- Right Out — Right channel resynthesized audio output
- Freq — Tunes the oscillators over a ±7 semitone range
- Bandwidth — Controls the analysis bandwidth; left side selects narrow to wide pass bands, right side selects narrow to wide notches
- FM — Frequency modulation input for oscillators
- CV 1 In — Assignable control voltage input 1
- CV1 Attenuator — Attenuator for assignable CV input 1
- FcCV — Control voltage input for Center Freq parameter
- Spectra LED 4 — Indicator LED for Spectra voice 4
- Audio Out 1 — Left channel resynthesized audio output
- LR-FX — Indicator LED for LR-FX output routing mode
- PRESETS — Enters preset storage and recall mode
- Audio Out 2 — Resynthesized audio output
- Bandwidth CV 1 — Control voltage input for Bandwidth parameter
- 1V/Oct — 1 Volt per octave pitch control for oscillators
- L-FX-R — Selects L-FX-R output routing mode
- Freeze — Freezes the spectral integrator, sustaining the currently analyzed spectrum
- DRY — Selects dry output mode, routing unprocessed audio to outputs
- Bandwidth CV 2 — Control voltage for Bandwidth parameter
- MIX — Sets the balance between original input audio and resynthesized audio
- FM Attenuator — Attenuator for frequency modulation input
- Freeze Tap Mode — Enables Freeze Tap Mode, causing new analysis only upon button press or external Tap/Sync pulse
- MULT — Indicator LED for Multiplier function
- Preset LED 3 — Indicator LED for preset slot 3
- OCT — Indicator LED for Octave shift function
- SLICE — Toggles Slice rate control via button press
- CV 2 In — Assignable control voltage input 2
- Audio In — Main audio input for spectral analysis
- Preset LED 4 — Indicator LED for preset slot 4
- Mode — Indicates current synthesis mode
- Preset LED 2 — Indicator LED for preset slot 2
- CLOCK — Clock input indicator LED
- Spectra LED 5 — Indicator LED for Spectra voice 5
- Preset LED 1 — Indicator LED for preset slot 1
- VCS — Indicator LED for VCS (Voltage Controlled Spectrum) mode
- Spectra LED 3 — Indicator LED for Spectra voice 3
- Preset LED 5 — Indicator LED for preset slot 5
- WAVE — Indicator LED for Waveform selection
- FBK — Feedback status indicator LED
How-To Guides
- Save a Frozen Spectrum
- Load a Saved Spectrum
- Save a Preset
- Load a Preset
- Copy a Preset or Spectrum to a New Slot
- Evolving Spectral Drone from Live Input
- Rhythmic Spectral Arpeggiator
- Clangorous Spectral Warp Texture
- Playable Harmonic Snapshot Oscillator
- Self-Sustaining Feedback Drone
- Harmonic Band Extraction and Resynthesis
- Spectral Resynthesis of Drums
Explore the interactive Panharmonium panel on BleepDex — tap any control to learn what it does.
