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w1n5t0n 3db90b035a feat(playground): add spread param for sigmoid saturation control and fix randomise sync 
Add ?spread=0-1 URL param that controls weight initialization scaling,
RL noise scaling per layer, noise cap, and weight decay to prevent
sigmoid output saturation. At spread=0 (original behavior) weights are
uniform [-1,1] and outputs polarise near 0/1. At spread=1 weights use
Xavier scaling (1/sqrt(fan_in)), noise is proportionally reduced, and
10% weight decay per thumbs-down prevents unbounded magnitude drift.

Also fix randomise to re-inject current joystick position and re-run
inference before routing outputs, eliminating the jump on first
joystick move after randomise.

Defaults: tame=1, spread=0.6 across all app variants.
2026-03-22 02:10:26 +02:00
..
c15 feat(playground): add C15 synth mode with NISPS-controlled parameters and arpeggiator 2026-03-21 22:26:37 +02:00
css style(playground): unify dark theme with orange accents and improve RL button layout 2026-03-22 01:36:00 +02:00
devlog feat(playground): add three alternative UI design explorations 2026-03-22 00:57:58 +02:00
js feat(playground): add spread param for sigmoid saturation control and fix randomise sync 2026-03-22 02:10:26 +02:00
a-immersive.html style(playground): unify dark theme with orange accents and improve RL button layout 2026-03-22 01:36:00 +02:00
b-workbench.html style(playground): unify dark theme with orange accents and improve RL button layout 2026-03-22 01:36:00 +02:00
c-journey.html style(playground): unify dark theme with orange accents and improve RL button layout 2026-03-22 01:36:00 +02:00
designs.html style(playground): unify dark theme with orange accents and improve RL button layout 2026-03-22 01:36:00 +02:00
index.html style(playground): unify dark theme with orange accents and improve RL button layout 2026-03-22 01:36:00 +02:00
README.md docs: update CLAUDE.md and playground README for 126-param C15 map 2026-03-21 23:11:45 +02:00
serve-coop.py feat(playground): add C15 synth mode with NISPS-controlled parameters and arpeggiator 2026-03-21 22:26:37 +02:00
serve.sh feat(playground): add C15 synth mode with NISPS-controlled parameters and arpeggiator 2026-03-21 22:26:37 +02:00

README.md

NISPS Playground

Browser-based interactive demo of the NISPS ML engine.

Run locally

python3 -m http.server
# Open http://localhost:8000

Run the command from the playground/ directory.

What it does

  • Maps 2D joystick input (X/Y) through an MLP ([3, 32, 48, 64, 126]) to 126 outputs.
  • Visual mode: first 20 outputs drive a flow-field particle visualization on Canvas2D.
  • Synth mode (C15): all 126 outputs control the C15 WASM synthesizer — envelopes, oscillators, shapers, filters, feedback/output mixers, cabinet, and effects.
  • Supports two learning modes:
    • Examples: add explicit input/output pairs and train.
    • RL Feedback: give thumbs up/down while exploring outputs.

C15 synth parameters

The 126 synth parameters (js/synth/param-map.js) cover all sonically meaningful continuous parameters of the C15 engine. Excluded from the C15's 287 total params:

  • Hardware routing (56) — no physical MIDI in browser
  • Macro controls (12) — conflicts with direct ML control
  • Scale/tuning (13) — would break pitch
  • Key tracking / velocity (22) — depend on note context ML can't observe
  • Envelope mod depths (19) — too many multiplicative interactions for 2-input ML
  • Discrete/structural/dangerous (19) — pitch sweep, volume, switches, resets
  • Secondary config (15) — curves, chirp, shaper blend, source selects

UI controls

  • Output mode tabs (side panel): switch between Visual and Synth modes.
  • Expand / Collapse button on the canvas: makes the visual surface nearly full-screen and compresses lower controls into a minimal view.
  • Presets: quick demo mappings (Calm/Chaos, Rainbow, Vortex) — visual mode only.
  • Help (?) overlay: in-app usage guide.
  • Follow mode: double-click joystick in RL mode to toggle no-hold interaction.
  • Keyboard in Follow mode (RL): 2 = thumbs up, 1 = thumbs down.
  • Gamepad in RL: RB = thumbs up, LB = thumbs down.

Files

  • index.html - page structure.
  • css/style.css - layout and visual styling.
  • js/app.js - app wiring and interaction logic.
  • js/ui/ - visualizer, joystick, controls, parameter display.
  • js/nisps/ - JavaScript MLP + IML core.
  • js/synth/ - C15 WASM bridge, parameter map, arpeggiator.
  • c15/ - C15 engine WASM binary and parameter definitions.