Noise Engineering Loquelic Iteritas
Dual-pitch digital VCO with three radical synthesis algorithms
10 HP Eurorack module
Loquelic Iteritas is a complex digital VCO featuring three classic synthesis algorithms — VOSIM-inspired, summation synthesis, and phase modulation — each with dual independent pitch oscillators. It excels at producing a massive range of timbres from calm sine-based tones to harsh, broken, industrial textures. The module prioritizes tonal variance and continuous sound morphing over strict musical pitch accuracy.
Features
- Three classic synthesis algorithms: VOSIM-inspired (VO), Summation Synthesis (SS), and Phase Modulation (PM)
- Dual independent pitch oscillators (A and B) each with 1v/Oct input, coarse and fine knobs
- Pitch inputs are cross-normaled to each other by default
- Four tone controls: Morph (waveform), Fold (wavefolder threshold), Modulate (phase modulation), Damp (algorithm-specific parameter)
- All four tone controls have dedicated CV inputs
- Morph continuously varies waveform between sine, triangle, and saw
- Wavefolder on output stage for additional harmonic content
- Master sync switch: free-running, A syncs B, or B syncs A
- Unique multisampling technique using irregular interleaved sample rates to make aliasing more musical
- Intentionally naive algorithm implementations that include interesting harmonic artifacts
- AC-coupled audio output
- 10HP Eurorack format
Controls & Jacks (24)
- Morph — Continuously varies waveform between sine, triangle, and sawtooth in all modes
- Fold CV — CV input for Fold control
- Pitch A 1v/Oct — 1 volt per octave pitch control for oscillator A; cross-normaled to Pitch B input
- Morph CV — CV input for Morph control
- Pitch B CV — input null
- Fold — Controls the threshold of wavefolding in all modes
- Damp — Tone control with algorithm-specific behavior (decay in VO, parameter a in SS, AM blend in PM)
- Modulate CV — CV input for Modulate control
- Modulate — Controls phase modulation between the two pitch oscillators
- Damp CV — CV input for Damp control
- Audio Out — AC-coupled audio output
- Out
- Pitch A Fine — Fine pitch offset for oscillator A
- Pitch B Fine — Fine pitch offset for oscillator B
- Pitch B Coarse — Coarse pitch offset for oscillator B in semitone steps
- Algorithm — Selects synthesis algorithm: VO, SS, or PM
- Pitch A Coarse — Coarse pitch offset for oscillator A in semitone steps
- Sync
- Master Sync — Controls oscillator sync: middle position (free running), A (B syncs to A), B (A syncs to B)
- Mod — Controls phase modulation between the two pitch oscillators
- Pitch A CV — CV input for Pitch A modulation
- Pitch B 1v/Oct — 1 volt per octave pitch control for oscillator B; cross-normaled to Pitch A input
- Pitch A CV (Tone) — CV input for Pitch A modulation
- Pitch B CV (Tone) — CV input for Pitch B modulation
How-To Guides
- Classic VOSIM Drone
- Summation Synthesis Bass
- PM Bell Tones
- LFO Tone Morphing
- Hard Sync Pitch Sweep
- Tonnetz Interval Generator
- PM Industrial Noise Texture
- VOSIM Percussive Body
- Summation Synthesis Pad
- Live Morph Performance Sweep
Explore the interactive Loquelic Iteritas panel on BleepDex — tap any control to learn what it does.
