WMD Arpitecht
Scale-locked arpeggiator with harmonic chord expander
12 HP Eurorack module
The WMD Arpitecht is a scale-quantizing arpeggiator for Eurorack that steps through notes of a selected musical scale across up to 3 octaves, outputting 1V/Oct CV and gate signals. It pairs with the Triad expander to simultaneously output chord tones based on the current scale and transpose setting, enabling harmonic, melodic, and chordal textures from a single clock source. Its musical character is structured and scale-aware, suited to melodic sequences, harmonic pads, and rhythmically driven arpeggios.
Features
- Scale-quantized 1V/Octave arpeggio output
- Selectable musical scales
- Adjustable octave range (1 to 3 octaves)
- Multiple arpeggio pattern modes
- Gate output synchronized to arpeggio steps
- Accent output
- Transpose input for external CV-based key changes
- Transpose knob for manual root/key offset
- Reset input to restart arpeggio sequence
- Expander connection for Triad module
- Triad expander outputs three chord-tone CV signals (Note 1, Note 2, Note 3) based on current scale and transpose
- Triad chord tones are NOT transposed by the main arpeggio — they follow only the Transpose input/knob
Controls & Jacks (41)
- Note LED Grid
- Range 5
- Range 4
- Range 3
- Range 2
- Range 1
- Range 0
- Range -1
- RESET
- ROOT
- Up/Down
- Range +
- Range -
- Transpose
- Scale
- Notes
- Scale LED
- Notes LED
- Slide Time
- Slide Rhythm
- Rhythm
- Slide
- New LED
- Slide T
- Slide R
- Rhythm CV
- Root CV
- New
- Slide Out
- Input
- Transpose CV
- Scale CV
- Notes CV
- 1V/Oct
- Gate
- Step
- Reset In
- Run
- Random
- Up/Down CV
- Slide Gate
How-To Guides
- Basic Scale Arpeggio
- Static Chord Pad with Arpeggio Melody
- CV-Controlled Chord Transposition
- Arpeggio-Tracked Chord Voicing via Offset
- Dual CV Input Chord Transposition
- Accented Rhythmic Arpeggio
- Externally Reset Synced Arpeggio
- Arpitecht as Clock Master
- LFO-Driven Scale Key Sweep
Explore the interactive Arpitecht panel on BleepDex — tap any control to learn what it does.
