WMD Skorpion
Hybrid waveform processor with 8-threshold vector core and macro envelope
20 HP Eurorack module
The WMD Skorpion Waveform Reanimator is an advanced hybrid analog/digital waveform processor. Signal enters the IN jack and is analyzed by 8 comparators set by the threshold sliders. A vector core with adjustable SLOPE generates waveforms toward TARGET voltages, reversing direction at each threshold crossing. FOLD amplifies the input against the comparator stack, SHIFT creates asymmetry, and SHAPE modulates the slope with different feedback sources. The OUTPUT stereoization section provides a mid/side matrix with switchable delay and filtering. An internal macro envelope system controls 8 non-synchronizing LFOs that modulate fold, slope, shift, shape, and the thresholds/targets.
Features
- Hybrid analog/digital waveform processor — 20HP
- 8 voltage-controlled threshold comparators with individual sliders
- Vector core with adjustable SLOPE creates novel wavefolding
- FOLD, SLOPE, SHIFT, SHAPE parameter controls with CV + attenuverters
- Macro envelope system with 8 non-synchronizing LFOs
- Three slider contexts: THLDs, TRGTs, MACRO SETUP (via spring toggle)
- Target sequencing — 8-step voltage sequencer from threshold states
- Stereo mid/side output matrix with switchable digital delay
- DC or FILTERs output modes (240Hz LP/HP crossover)
- SYNC control: soft/none/hard zero-crossing reset
- Equalize Thresholds mode for classic wavefolder behavior
- 10+ auxiliary outputs: ABS, gate, TRGTs, DIFF, direction, count, DAC, delay
Controls & Jacks (60)
- FOLD — Controls wavefolding depth — amplifies the input signal against the comparator stack. Higher fold = more harmonic content from threshold int
- SLOPE — Controls the baseline rate of the vector core. Higher slope = brighter, more harmonically rich output. Use 1V/OCT for consistent timbre acro
- SHIFT — Vertical shift — pushes the signal up and down against the comparators creating asymmetry. Slow modulation produces frequency shifting, audi
- SHAPE — Modulates SLOPE with different feedback sources. Eight sources available including IN, OUT, DELAY, COUNT, DIFF, TRGTs, DAC, DIR. No feedback
- OUTPUT — DRY↔WET on lower half, WET↔WIDE on upper half. WIDE fades in a delay for stereo mid/side processing. DC switch bypasses filtering, FILTERs a
- FOLD LED — Indicates fold amount — brightness shows current fold depth.
- SLOPE LED — Indicates slope rate — brightness shows current slope level.
- Shape Modulation LED — Indicates dry signal level in the output mix.
- Dry LED — Indicates wet signal level in the output mix.
- DRY IF NO THLDs — When no thresholds are active, forces output to dry signal. Essential safety net when heavily modulating FOLD.
- SYM — Symmetry mode for SHAPE feedback. Up = symmetrical modulation for positive and negative signal. Down = asymmetrical.
- XOR — XOR indicator for the EQUALIZE THLDs switch — shows when in XOR mode.
- Shape Source — Direction control for the vector core — sets the target order direction.
- Shape CV Attenuverter — Attenuverter for the IN signal path.
- Output CV Attenuverter — 5V reference level control.
- EQUALIZE THLDs — Forces equal threshold intervals regardless of CV and slider settings — classic wavefolder timbre. ON: always equalized. XOR: jack inverts.
- 5V LED — Shows the current target voltage level.
- Target — Clips the vector core output at this voltage. Use the CLIP jack to clip to a different signal than the input.
- THLD 1 — Threshold 1 — sets the voltage level where the vector core reverses direction. In MACRO SETUP mode: Macro Env Attack time.
- THLD 2 — Threshold 2 — sets the voltage for the second reversal point. In MACRO SETUP mode: Macro Env Release time.
- THLD 3 — Threshold 3. In MACRO SETUP mode: THLD LFOs Amount — sets maximum amplitude of threshold-modulating LFOs.
- THLD 4 — Threshold 4. In MACRO SETUP mode: THLD LFOs Rate (0.0016Hz to 6Hz).
- THLD 5 — Threshold 5. In MACRO SETUP mode: Fold LFO/ENV rate. Quick gesture top→bottom selects LFO, bottom→top selects ENV.
- THLD 6 — Threshold 6. In MACRO SETUP mode: Slope LFO/ENV rate. LFO: 0.0016–6Hz unipolar. ENV: 50ms–600s.
- THLD 7 — Threshold 7. In MACRO SETUP mode: Shift LFO/ENV rate. Signal routes to CV7 jack normal.
- THLD 8 — Threshold 8. In MACRO SETUP mode: Shape LFO/ENV rate. LFOs disabled when slider is at bottom.
- Macro Envelope LED — Blue when macro envelope gate is active, red glow shows envelope level.
- Sliders Mode — Spring-loaded 3-way toggle. Center: sliders control THRESHOLDs. Hold left: sliders set TARGETs. Hold right: sliders control MACRO SETUP para
- CLIP In — Input for clip signal — normals to IN. Use another waveform here to overlay a different signal as the clip destination.
- TRGT MOD — Directly modulates the target voltage. SYM switch controls whether modulation is symmetrical or asymmetrical.
- ASYM — Asymmetry CV input — modulates the shift asymmetry.
- THLDs CV — Weighted CV to all thresholds: 100% for THLD 8, 50% for THLD 7, 25% for THLD 6, etc.
- THLD 1 CV — CV input for threshold 1 only.
- TRGTs CV In — CV input applied to all targets equally.
- Macro Envelope Gate In — Gate input for the macro envelope. Gate starts the attack/hold/release cycle.
- HALT — Stops the vector core from moving. Audio rate modulatable for harsh timbral effects. Normaled from HALT IF TARG=0 switch.
- HALT IF TARG=0 — When target is 0, halts wavefolding for that segment creating squares in the timbre. Normals to the HALT jack.
- SYNC — Sync mode: X (off/center), HARD (resets vector core to 0V at zero crossings — harsh metallic), SOFT (ramps toward 0V at current SLOPE rate).
- IN — Main audio input — the signal to be wavefolded and processed.
- 1V/OCT In — Volt-per-octave pitch tracking input. Controls both SHAPE and SLOPE for consistent timbre across notes.
- FOLD CV In — CV input with attenuverter for the Fold parameter.
- SLOPE CV In — CV input with attenuverter for the Slope parameter.
- SHIFT CV In — CV input with attenuverter for the Shift parameter.
- SHAPE CV In — CV input with attenuverter for the Shape parameter.
- TARGET CV In — Target voltage CV input — sets the destination voltage for the vector core.
- EQ THLDs CV In — CV/gate input for equalize thresholds — behavior depends on the EQ THLDs switch position.
- OUTPUT CV In — CV input for the OUTPUT level, scaled by the OUTPUT attenuverter.
- DC/Filters — Output filtering mode selector — DC bypasses filtering, FILTERs adds LP/HP crossover at 240Hz splitting low to center and high to sides.
- ABS(IN) — Full wave rectified version of the IN signal — positive-only output.
- G(IN>0) — Gate output: +5V when input is positive, 0V when negative.
- TRGTs Output — Direct target sequencer output — use as 8-step wavetable oscillator or modulation source.
- DIFF — Difference between target voltage and vector core value. Always slopes toward 0V. High harmonic content — great for percussion.
- ±G(DIR) — Bipolar gate: +5V when vector core is going up, -5V when going down.
- COUNT — Staircase output — each active threshold adds 0.5V, 0–4V range with all 8 active.
- DAC — Weighted binary staircase (R2R network) of active thresholds. THLD1=1/256, THLD8=1/2 of full scale.
- DELAY — Raw output of the delayed vector core. Only active when OUTPUT is past noon. Max delay 14.4ms ±3ms.
- OUT L — Stereo left output from the mid/side processing matrix.
- OUT R — Stereo right output from the mid/side processing matrix.
- TARGET ORDER — Controls which slider is selected when a threshold activates. SEQ = sequential, TIED = tied order. Allows different timbres for ascending vs
- Fold CV Attenuverter — ON position of the EQUALIZE THLDs 3-way switch. Forces equally spaced thresholds.
Explore the interactive Skorpion panel on BleepDex — tap any control to learn what it does.
