An interactive simulation of the Doppler Effect built with SceneryStack. Explore how observed sound frequency shifts when source and observer move relative to each other.
- Drag the source and observer; live frequency shift and waveform displays
- Preset scenarios for approach, recession, same-direction, and perpendicular motion
- Adjustable emitted frequency and speed of sound
- Keyboard controls (WASD / arrows), pause/resume, and motion trails
- Velocity vectors, microphone listen mode, and numerical readouts
- English and French UI, projector mode, and installable PWA
npm install
npm run icons # generate PNG icons from public/icons/icon.svg
npm start # dev server → http://localhost:5173| Command | Description |
|---|---|
npm start / npm run dev |
Start Vite dev server |
npm run build |
Type-check + production build → dist/ |
npm run preview |
Preview the production build locally |
npm run check |
TypeScript type check |
npm run lint |
Biome lint check |
npm run format |
Auto-format all files |
npm run fix |
Lint + auto-fix |
npm run icons |
Regenerate PNG icons from public/icons/icon.svg |
npm run clean |
Remove dist/ |
| Tool | Version | Purpose |
|---|---|---|
| SceneryStack | ^3.0.0 | Simulation framework |
| Vite | ^8 | Build tool + dev server |
| TypeScript | ^6 | Type-safe JavaScript |
| Biome | ^2.5 | Linting + formatting |
| vite-plugin-pwa | ^1 | PWA + service worker |
GNU Affero General Public License v3.0 — see OpenPhysics org license.
See OpenPhysics contributing guidelines. Report bugs via GitHub Issues; use org issue templates.