# Antinoise

- **Event:** [Meta Global AI Developer Hackathon](https://cerebralvalley.ai/e/meta-ai-developer-hackathon)
- **When:** Oct 26, 12:00 PM – Nov 4, 9:00 PM (EST)
- **Where:** Online
- **Team:** [Eero Ekebom](https://cerebralvalley.ai/u/Lumen)
- **GitHub:** https://github.com/EeroEkebom/antinoise
- **Demo video:** https://youtu.be/pX5X40EPlXU
- **Gallery:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2688

Antinoise is feedforward noise cancellation for road traffic: not in your earbuds, but across an open roadside zone. A sensor tower hears the rumble first, and an optical-fiber relay delivers the noise profile to a downstream controller before the sound arrives, turning plain distance into anticipation time (lead = distance ÷ 343 m/s). The controller builds the anti-noise and schedules it to meet the traffic noise at the quiet zone. It is an honest physics simulation, not hardware: real DSP (FXLMS adaptive cancellation), audible A/B results on synthetic and real CC0 traffic recordings, and an interactive field map that shows where cancellation works and where wavelength physics stops it. It targets low-frequency rumble (under about 500 Hz), the band where walls perform worst. 100% of the repo was built during the building period (first commit Oct 27); no pre-existing work.

## More from Meta Global AI Developer Hackathon

- [Chalk](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2685)
- [ScreenGuard](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2686)
- [Spekios](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2687)
- [Proof-Carrying-Code](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2689)
- [Glimmer System One](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2690)
- [zaxyar](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2691)

---

Markdown version of https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2688. Site index for agents: https://cerebralvalley.ai/llms.txt · full text: https://cerebralvalley.ai/llms-full.txt