📣 Warning Siren Acoustics Lab: Sound Pressure Level, Coverage Maps, Wind and Building Shadows
Place outdoor warning sirens in a 3-D town and see sound pressure level, ISO 9613-1 absorption, wind refraction, building and hill shadows and an audibility coverage map. Unlike generic sound-propagation or Doppler pages, this is a civil-defence coverage-planning lab.
Place rotating warning sirens in a 3-D town and read sound pressure level, ISO 9613-1 air absorption, wind refraction with an upwind shadow zone, Maekawa shadows behind buildings and a hill, indoor audibility and a greedy siren-placement optimiser. Unlike the generic Sound Wave Propagation and Doppler pages, this is a civil-defence coverage-planning lab with a measured-vs-theory experiment panel.
3D · Three.js / WebGL renderer · 60 FPS target · runs fully client-side, no install