Replace the composable transform chain (VelocityCurve, GateThreshold,
RangeMap, OctaveFolder, StutterMap, presets) with 3 straightforward
post-chain knobs: velocityCurve, gateThreshold, and pitchRange. The
old system was over-engineered for a research prototype — the new API
is easier to wire to UI controls and reason about.
PitchWalker was classified as a generator but always consumed the
incoming pattern's triggers. Reclassify as a processor so it modifies
the pattern produced by an upstream generator (clonePattern instead of
createPattern). Add reEvalOnLoop flag on the Primitive base class; when
set, the sequencer re-evaluates the chain at each loop start so
stateful primitives produce evolving patterns across loops.
Generators can now have independent step counts. When merging patterns
of different lengths, both are tiled to their LCM. Chain exposes
setGeneratorStepCount/getGeneratorStepCount for polyrhythmic control.
Replace the pitch*127 encoding hack with a dedicated midiNote field on
pattern steps. IntervalLock now writes integer MIDI notes to step.midiNote
while preserving the original [0,1] pitch for other consumers. The clock
and sequencer bridge pass midiNote through the event pipeline.
Also reworks mergePatterns to be trigger-aware: when only one generator
fires at a step, use its values directly instead of averaging with the
other generator's defaults.
The EventBus was duplicated inside shapeseq/ but is used by other
playground code too. Move the canonical implementation to js/event-bus.js
and turn the shapeseq copy into a re-export shim.
- Per-file loop count (0-4) with stepper UI on each waveform cell;
dynamic MLP output sizing (8 range + N_loops × 4 position outputs)
- Beat-synced loop length: global bars/beats selector (2/4/8/16/32/64)
with per-loop overrides via long-press dropdown, persistent badges
- Global param range groups: dual-thumb range sliders (volume, pitch,
position, filter) with ML-driven min/max and per-loop position mapping
- Pitch lock toggle (1×) to freeze playback rate across all submodes
- Fix: _resizeOutputs now syncs _loopOutputs to prevent stale reads
- Fix: granular visuals consolidated per-clip to prevent multi-loop flicker
Tests cover:
- Default state (C15, 126 params, heatmap cells)
- Engine switcher UI (3 cards, active state)
- Switch to Additive (48 params, outputs bounded, training works)
- Switch to FM Matrix (55 params, outputs bounded, training works)
- Round-trip switching (C15→Add→C15, C15→FM→Add→C15)
- Warm-start weight preservation across resize
- EOC chain accessibility across engines
- SynthVisualizer visibility across engines
- No console errors during any switch
Also fixes: faustJsonToParamMeta now filters [hidden:1] params,
giving correct counts (48 additive, 55 FM) instead of including
freq/gate/_vel control inputs.
When switching from C15 to Additive or FM engines, the MLP was resized
to 0 outputs because paramMeta wasn't loaded until init() (which needs
AudioContext). The SynthVisualizer also disappeared because its section
map was hardcoded to C15's 18 param groups.
- Add FaustEngineBase.loadParamMeta() for eager JSON-only loading
- Call loadParamMeta() before setActiveEngine() in engine switch handler
- Add SynthVisualizer.rebuild(paramMeta) to derive sections from groups
- Add rebuildParamToSection() / restoreC15ParamToSection() for engine-agnostic
param-to-section mapping
- Fix tooltip to use engineParamOverrides for non-C15 engines
- Engine switcher now lives in the Synth drawer (was incorrectly in NISPS params drawer)
- Params drawer renamed to "NISPS" (it's for ML engine tuning, not synth engine selection)
- Output mode button says "Synth" (generic) not "C15 Shaper-Feedback" (engine-specific)
- Dock icon for params drawer now labelled "NISPS" with correct tooltip
Support opus, webm, mp4, wma, aif, aiff in addition to existing formats.
Add "+" button to control bar for importing files without drag-and-drop (mobile).
Additive engine: 5 presets across 3 tiers (Spectral Basics, Formant Play,
Harmonic Sculptor, Phase Explorer, Full Spectrum). FM engine: 5 presets
across 3 tiers (Simple FM, Bell Tones, Matrix Explorer, Feedback Machine,
Full Matrix).
Engine-aware preset system: applyPreset() dispatches to C15 groupOverrides
or new flat engineParamOverrides depending on active engine. Preset selector
dropdown rebuilds on engine switch. URL ?preset param searches all engines.
Resolved conflicts: merged all 6 module imports in eoc-chain-ui.js and index.js.
All moduleFactory cases now return real Faust WASM implementations — no stubs remain.
- Add totalOutputCount() helper: engine params + EOC params when nispsMode === 'shared'
- setActiveEngine() calls resizeMLP(totalOutputCount()) and rebuilds heatmap with combined paramMeta
- eoc:change listener handles nispsMode-changed and module-* events: resizes MLP, rebuilds heatmap, toggles .shared-mode CSS class
- routeOutputs() slices outputs: indices < engineParamCount go to engine, remainder to eocChain.setParam() in Shared mode
- CSS: .heatmap-strip.shared-mode adds green bottom border and '+ FX' label to signal combined output space
Faust DSP sources, compiled WASM + JSON descriptors, AudioWorklet processors,
and EOCModule subclasses for all three effects.
- meml-4b4: 4-band parametric EQ (fi.low_shelf, fi.peak_eq × 2, fi.high_shelf)
10 params: freq/gain per band, Q for the two mid bell bands
- meml-cpe: stereo feed-forward compressor (co.compressor_mono × 2)
7 params: threshold, ratio, attack, release, knee, makeup, mix (parallel)
- meml-wwc: zita reverb (re.zita_rev1_stereo) with pre-delay and M/S width
8 active params + mod_rate placeholder (zita internal mod not yet exposed)
All three DSPs compile cleanly under Faust 2.83.1. moduleFactory in
eoc-chain-ui.js now returns real instances for eq/compressor/reverb.
- Add AdditiveEngine (48 params) and FMEngine (55 params) wrapping FaustEngineBase
- Remove comingSoon flags from ENGINES descriptors
- Replace stub onSwitch handler with real engine construction + init + setActiveEngine
- Fix setActiveEngine EOC rewire to work with both C15 (_bridge.audioContext) and Faust (_audioCtx)
- Fix _startEocChain audioCtx resolution to support Faust engines
- Fix synth param send loop: use N_OUTPUTS instead of hardcoded SYNTH_PARAM_MAP.length
- Add rebuildHeatmap(paramMeta): resets rawParamValues/_lastSentParams and rebuilds
#heatmap-cells from engine paramMeta; colors from SYNTH_PARAM_COLORS for C15,
_colorFromGroup() hash for other engines
- Replace static SYNTH_PARAM_NAMES/COLORS lookups in buildHeatmap, setHeatmapValue,
and showParamPopup with activeEngine.paramMeta[index] lookups
- Scope MIDI CC localStorage key per engine via midiCCStorageKey()
- Add reloadMidiCCMap() helper; called in setActiveEngine() after engine switch
- loadCCMap/saveCCMap in midi-cc-map.js accept optional key parameter
- Wire EOCChain into audio graph after c15.start() (both start-btn and
quick-play paths); guarded by _eocInited flag so init happens once per
AudioContext lifetime
- getOutputNode() on C15Adapter now returns limiter (last node before
destination) so EOC inserts correctly between limiter and destination
- Expose limiterNode getter on C15Bridge
- Add getCurrentParamValue(i) to EOCModule base class, backed by _paramValues
array that setParam() writes to
- Add _buildParamSliders() to EOCChainUI: collapsible ▶ params toggle per
module row, one range slider per paramMeta entry, calls module.setParam()
on input; labelled "manual" when nispsMode=bypass
- eoc:change listener in a-app.js logs paramCount (hook point for future modes)
- saveState()/loadState() persist eocModules (id, enabled, params) and
eocNispsMode; restore re-adds modules via moduleFactory and re-applies values
- CSS: eoc-params-section, eoc-params-toggle, eoc-param-row/label/slider;
eoc-module-row gains flex-wrap to accommodate params section below controls
Adds EngineSwitcher module with clickable engine cards (active highlight,
coming-soon greyed state, loading bar animation, confirm-on-switch when
training data exists). Wired into the Engine drawer; C15 active,
Additive/FM marked coming-soon with toast. Dock title reflects active
engine; engineId persisted to/restored from localStorage.
- input-pipeline.js: guard circular clamp against div-by-zero when
input is exactly at center (0.5, 0.5) — dist=0 produced NaN
- snapshot-stack.js: jumpTo() used slice(0, index) which excluded the
target snapshot; fixed to slice(0, index + 1)
- a-app.js: _lastSentParams not resized when MLP output count changes
during mode switch, causing stale throttle state and potential param
flood on first frame after switch
Adds the Faust DSP toolchain infrastructure: placeholder additive and FM DSP
files, build.sh (faust -lang wasm per .dsp), faustJsonToParamMeta() to convert
Faust JSON UI trees into the standard paramMeta format, FaustEngineBase
(SynthEngine subclass wiring init/setParam/noteOn/noteOff through AudioWorklet
messages), and FaustWorkletProcessor base class for concrete engine processors.
Add WasmIML.extractWeights() and WasmIML.createWithWarmStart() to preserve
learned joystick mappings across output-count changes; resizeMLP() now
transfers hidden-layer weights and shared output nodes instead of cold-starting.
InputHeatmap.update() now accepts options.inferBatchFn to evaluate
all grid points (plus the divergence center point) in a single WASM
call instead of 256 separate round-trips. The per-point inferFn path
is preserved as a fallback when inferBatchFn is not provided.
Add evalLoss, inferBatch, and getLayerStats to the window.__nisps
debug probe so Playwright tests and dev console can access the new
WasmIML capabilities. InputHeatmap (Phase 3) is not yet wired into
a-app.js, so batch inference heatmap integration is deferred.
Expose inferBatch, trainEx, moveWeightsEx, evalLoss, and getLayerStats
from the WASM binary into the JavaScript layer:
- inferBatch: batch inference for heatmap sampling
- trainEx: replaces train() with per-iteration loss history capture
- moveWeightsEx: native output pin mask support (removes save/restore hack)
- evalLoss: compute loss without updating weights
- getLayerStats: per-layer weight statistics (meanAbs, maxAbs, dead/sat fracs)
Worker also upgraded to trainEx, returning full lossHistory in payload.
- Add window.__nisps debug probe (gated on ?debug=1) exposing iml state,
getOutputs/getLoss/getWeights/getExampleCount, and action triggers
(thumbsUp/thumbsDown/train/randomise/clearExamples/saveState)
- Fix WasmIML bug: this.dataset was a plain object; import Dataset and
use new Dataset(100) so computeWeights() is available for training
- Fix WasmIML.addExample/clearDataset to use Dataset API methods
- 44 Playwright e2e tests across 4 spec files:
- ml-engine.spec.js: WASM inference bounds, training loss, thumbs
up/down behavior, async training, example capture semantics
- ui-interactions.spec.js: drawer open/close, mode switching,
heatmap bar counts, preset chips, keyboard shortcuts (1/2/Z)
- input-pipeline.spec.js: input→output variation, clamping, joystick
drag, post-training output bounds across the full input space
- persistence.spec.js: URL params (?preset, ?spread), localStorage
round-trip, saveState probe
Add MIDI CC preset system for bundled device configurations:
- midi-cc-presets.js: listPresets/loadPreset/loadPresetFromFile API
- presets/polybrute.json: Arturia PolyBrute CC map
- Preset selector in quick controls bar and MIDI CC drawer
- File import button for loading JSON presets from disk
Bug fixes in a-app.js:
- Destroy IML instances before resizeMLP() to free WASM memory
- Fix randomiseWeights() call (was drawWeights())
- Fix thumbs-up to store rawParamValues instead of post-pipeline outputs
Add Dataset.computeWeights() with three modes:
- global: exponential recency decay (newest examples weighted higher)
- local: spatial suppression of older examples near the current input
- combined: both applied together
IML and WasmIML now compute weights on every train() call using the
active mode. Exposes recencyBias, weightingMode, localRadius properties.
WASM worker path passes sampleWeights through to C++ via the new binding.
