Antinoise

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.