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‎README.md‎

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@@ -25,6 +25,8 @@ Browser-based Eurorack modular synthesizer emulator. Patch virtual modules toget
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| ARP | Arpeggiator with chord patterns |
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| SEQ | 8-step CV/gate sequencer with direction modes |
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| EUCLID | Euclidean rhythm generator (evenly distributed triggers) |
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| LOGIC | Boolean gate operator (AND/OR) |
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| MULT | 2-in, 6-out signal splitter |
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| ADSR | Envelope generator |
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### Processors

‎claude.md‎

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**Self-contained modules**: Each module folder contains DSP + UI definition in one file. Modules export metadata, `createDSP()` factory, and declarative `ui` config.
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**Available modules**: `clk` (clock) · `div` (divider) · `lfo` · `nse` (noise) · `sh` (sample&hold) · `quant` (quantizer) · `arp` (arpeggiator) · `seq` (sequencer) · `euclid` (euclidean rhythm) · `vco` · `vcf` · `adsr` · `vca` · `atten` (attenuverter) · `slew` · `mix` · `dly` (delay) · `verb` (reverb) · `kick` · `snare` · `hat` · `scope` · `out`
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**Available modules**: `clk` (clock) · `div` (divider) · `lfo` · `nse` (noise) · `sh` (sample&hold) · `quant` (quantizer) · `arp` (arpeggiator) · `seq` (sequencer) · `euclid` (euclidean rhythm) · `logic` (AND/OR gates) · `mult` (signal splitter) · `vco` · `vcf` · `adsr` · `vca` · `atten` (attenuverter) · `slew` · `mix` · `dly` (delay) · `verb` (reverb) · `kick` · `snare` · `hat` · `scope` · `out`
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## Project Structure
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Processing order is computed dynamically from cable connections using `computeProcessOrder()`:
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- Sources process before destinations (topological sort)
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- Ties broken by `MODULE_ORDER`: `clk → div → lfo → nse → sh → quant → arp → seq → euclid → vco → vcf → adsr → vca → atten → slew → mix → dly → verb → kick → snare → hat → scope → out`
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- Ties broken by `MODULE_ORDER`: `clk → div → lfo → nse → sh → quant → arp → seq → euclid → logic → mult → vco → vcf → adsr → vca → atten → slew → mix → dly → verb → kick → snare → hat → scope → out`
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- Cycles (feedback patches) fall back to `MODULE_ORDER`
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- Recomputed when cables or modules change
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| Module | Inputs | Outputs |
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|--------|--------|---------|
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| clk | — | clock |
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| div | clock | div2, div4, div8, div16, div32 |
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| div | clock, rate1CV, rate2CV | out1, out2 |
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| lfo | rateCV, waveCV, reset | primary, secondary |
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| nse | — | white, pink |
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| sh | in1, in2, trig1, trig2 | out1, out2 |
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| quant | cvIn, trigIn | cvOut, trigOut |
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| arp | clock, cvIn, gateIn, hold, pause | cvOut, gateOut |
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| seq | clock, reset | cv, gate |
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| euclid | clock, reset, lenCV, hitsCV | trig |
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| logic | in1, in2 | and, or |
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| mult | in1, in2 | out1a, out1b, out1c, out2a, out2b, out2c |
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| vco | vOct, fm, pwm, sync | triangle, ramp, pulse |
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| vcf | audio, cutoffCV, resCV | lp, bp, hp |
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| adsr | gate, retrig | env |
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| vca | ch1In, ch2In, ch1CV, ch2CV | ch1Out, ch2Out |
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| mix | ch1, ch2, ch3, ch4 | main |
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| mix | in1, in2, in3, in4 | out |
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| atten | in1, in2 | out1, out2 |
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| slew | in1, cv1, in2, cv2 | out1, out2 |
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| dly | inL, inR, timeCV, feedbackCV | outL, outR |

‎node_modules/.vite/vitest/results.json‎

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‎research/modules/logic.md‎

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# 2hp Logic Module Research
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## Overview
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Logic is a 2-channel boolean gate operator providing AND and OR logic operations for gate/trigger signals.
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## Sources
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- [2hp Official](https://www.twohp.com/modules/p/logic)
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- [ModularGrid](https://modulargrid.net/e/2hp-logic)
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- [Elevator Sound](https://www.elevatorsound.com/product/2hp-logic-and-or/)
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## Specifications
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- Width: 2hp
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- Depth: 42-45mm
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- Power: 35mA +12V, 3mA -12V
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## Panel Layout (top to bottom)
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- IN 1 - Input jack for channel 1
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- IN 2 - Input jack for channel 2
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- AND - Output jack (high when both inputs high)
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- OR - Output jack (high when either input high)
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## Functionality
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### AND Output
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- High (10V) when BOTH IN 1 AND IN 2 are high
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- Low (0V) otherwise
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- Use case: Gating rhythmic events - only triggers when two patterns coincide
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### OR Output
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- High (10V) when EITHER IN 1 OR IN 2 (or both) are high
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- Low (0V) when both inputs are low
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- Use case: Combining two rhythmic patterns into one stream
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### Normalling
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- Channel 1 normals to channel 2 when no cable is present in IN 1
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- This means with only IN 2 patched:
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- AND output = IN 2 (since IN 1 copies IN 2)
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- OR output = IN 2 (same signal ORed with itself)
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## Voltage Thresholds
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Standard Eurorack gate threshold: signals >= 1V considered HIGH
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## Implementation Notes
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### DSP Approach
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- Sample-by-sample boolean logic
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- No edge detection needed - just compare voltage levels
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- Output full gate voltage (10V) or 0V
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### Considerations
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- Should handle both gates (sustained high) and triggers (brief pulses)
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- No smoothing/slew needed - instant response
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- LED indicators for AND and OR outputs
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## Use Cases
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1. **Rhythmic gating**: AND two clock divisions to create polyrhythms
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2. **Pattern combination**: OR euclidean + sequencer gates for complex rhythms
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3. **Conditional triggers**: AND a gate with clock for gated rhythms
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4. **Event merging**: OR multiple trigger sources to single destination

‎research/modules/mult.md‎

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# 2hp Mult Module Research
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## Overview
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Passive 2-input, 6-output signal splitter. Duplicates CV or audio signals to multiple destinations.
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## Sources
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- [2hp Official](https://www.twohp.com/modules/p/mult)
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- [ModularGrid](https://modulargrid.net/e/2hp-mult)
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## Specifications
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- Width: 2hp
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- Depth: 15mm
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- Power: Passive (no power required)
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- Price: $34
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## Panel Layout (top to bottom)
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- IN 1 - Input jack for channel 1
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- OUT 1A - Output 1 (copy of IN 1)
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- OUT 1B - Output 2 (copy of IN 1)
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- OUT 1C - Output 3 (copy of IN 1)
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- IN 2 - Input jack for channel 2
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- OUT 2A - Output 1 (copy of IN 2)
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- OUT 2B - Output 2 (copy of IN 2)
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- OUT 2C - Output 3 (copy of IN 2)
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## Functionality
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### Signal Splitting
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- Each input is copied to its 3 corresponding outputs
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- No attenuation, buffering, or modification - pure signal copy
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- Works with any signal type: audio, CV, gates, triggers
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### Normalling
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- When IN 2 has no cable, it receives IN 1's signal
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- This allows a single input to be split 6 ways
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- With both inputs patched, operates as two independent 1-to-3 mults
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## Implementation Notes
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### DSP Approach
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- Simple buffer copy operation
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- Each output = corresponding input
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- Handle normalling: if in2 unpatched, use in1's signal for channel 2
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### Considerations
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- Since hardware is passive, our implementation should be transparent
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- No processing, filtering, or coloring of signal
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- LED indicators could show signal presence (even though hardware has none)
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## Use Cases
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1. **CV distribution**: Send one LFO to modulate multiple parameters
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2. **Gate splitting**: Trigger multiple envelopes from one gate
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3. **Audio splitting**: Send oscillator to multiple filters/effects
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4. **Clock distribution**: Fan out clock to multiple sequencers

‎src/js/config/patches/index.js‎

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@@ -21,6 +21,8 @@ import testArpeggiator from './test-arpeggiator.js';
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import testScopeSinewave from './test-scope-sinewave.js';
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import testSequencer from './test-sequencer.js';
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import testEuclid from './test-euclid.js';
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import testLogic from './test-logic.js';
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import testMult from './test-mult.js';
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import testDelay from './test-delay.js';
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import testReverb from './test-reverb.js';
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import testAttenuverter from './test-attenuverter.js';
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[testScopeSinewave.name]: testScopeSinewave,
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[testSequencer.name]: testSequencer,
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[testEuclid.name]: testEuclid,
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[testLogic.name]: testLogic,
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[testMult.name]: testMult,
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[testDelay.name]: testDelay,
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[testReverb.name]: testReverb,
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[testAttenuverter.name]: testAttenuverter,

‎src/js/config/patches/test-logic.js‎

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/**
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* Test - Logic Gates
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*
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* Demonstrates AND/OR logic operations:
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* - Two euclidean patterns feed into Logic
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* - AND output triggers kick (only when both patterns hit)
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* - OR output triggers snare (when either pattern hits)
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*
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* Try adjusting the euclidean patterns to hear different rhythms.
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*/
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export default {
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name: 'Test - Logic',
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factory: true,
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state: {
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modules: [
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{ type: 'clk', instanceId: 'clk', row: 1 },
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{ type: 'euclid', instanceId: 'euclid1', row: 1 },
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{ type: 'euclid', instanceId: 'euclid2', row: 1 },
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{ type: 'logic', instanceId: 'logic', row: 1 },
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{ type: 'kick', instanceId: 'kick', row: 1 },
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{ type: 'snare', instanceId: 'snare', row: 1 },
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{ type: 'mix', instanceId: 'mix', row: 1 },
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{ type: 'out', instanceId: 'out', row: 1 }
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],
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knobs: {
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clk: { bpm: 0.35 },
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euclid1: { length: 8, hits: 5, rotate: 0 },
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euclid2: { length: 8, hits: 3, rotate: 0 },
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kick: { tune: 0.4, decay: 0.4, punch: 0.6 },
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snare: { tune: 0.5, decay: 0.3, noise: 0.6 },
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mix: { lvl1: 0.7, lvl2: 0.5 },
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out: { volume: 0.6 }
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},
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switches: {},
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cables: [
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// Clock to both euclidean generators
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{ fromModule: 'clk', fromPort: 'clock', toModule: 'euclid1', toPort: 'clock' },
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{ fromModule: 'clk', fromPort: 'clock', toModule: 'euclid2', toPort: 'clock' },
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// Euclidean outputs to logic inputs
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{ fromModule: 'euclid1', fromPort: 'trig', toModule: 'logic', toPort: 'in1' },
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{ fromModule: 'euclid2', fromPort: 'trig', toModule: 'logic', toPort: 'in2' },
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// AND triggers kick, OR triggers snare
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{ fromModule: 'logic', fromPort: 'and', toModule: 'kick', toPort: 'trigger' },
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{ fromModule: 'logic', fromPort: 'or', toModule: 'snare', toPort: 'trigger' },
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// Mix to output
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{ fromModule: 'kick', fromPort: 'out', toModule: 'mix', toPort: 'in1' },
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{ fromModule: 'snare', fromPort: 'out', toModule: 'mix', toPort: 'in2' },
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{ fromModule: 'mix', fromPort: 'out', toModule: 'out', toPort: 'L' },
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{ fromModule: 'mix', fromPort: 'out', toModule: 'out', toPort: 'R' }
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]
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}
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};

‎src/js/config/patches/test-mult.js‎

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/**
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* Test - Mult
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*
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* Demonstrates signal splitting:
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* - One LFO split to modulate two VCOs at different rates
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* - Creates a detuned/chorusing effect
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*/
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export default {
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name: 'Test - Mult',
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factory: true,
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state: {
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modules: [
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{ type: 'lfo', instanceId: 'lfo', row: 1 },
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{ type: 'mult', instanceId: 'mult', row: 1 },
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{ type: 'vco', instanceId: 'vco1', row: 1 },
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{ type: 'vco', instanceId: 'vco2', row: 1 },
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{ type: 'mix', instanceId: 'mix', row: 1 },
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{ type: 'out', instanceId: 'out', row: 1 }
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],
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knobs: {
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lfo: { rate: 0.3, shape: 0.5 },
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vco1: { coarse: 0.4, fine: 0 },
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vco2: { coarse: 0.4, fine: 0.1 },
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mix: { lvl1: 0.6, lvl2: 0.6 },
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out: { volume: 0.5 }
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},
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switches: {
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lfo: { range: 0 }
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},
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cables: [
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// LFO to mult input
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{ fromModule: 'lfo', fromPort: 'primary', toModule: 'mult', toPort: 'in1' },
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// Mult outputs to both VCO pitch inputs
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{ fromModule: 'mult', fromPort: 'out1a', toModule: 'vco1', toPort: 'vOct' },
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{ fromModule: 'mult', fromPort: 'out1b', toModule: 'vco2', toPort: 'vOct' },
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// VCOs to mixer
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{ fromModule: 'vco1', fromPort: 'ramp', toModule: 'mix', toPort: 'in1' },
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{ fromModule: 'vco2', fromPort: 'ramp', toModule: 'mix', toPort: 'in2' },
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// Mix to output
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{ fromModule: 'mix', fromPort: 'out', toModule: 'out', toPort: 'L' },
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{ fromModule: 'mix', fromPort: 'out', toModule: 'out', toPort: 'R' }
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]
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}
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};

‎src/js/index.js‎

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'arp',
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'seq',
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'euclid',
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'logic',
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'mult',
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'vco',
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'vcf',
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'adsr',

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