Sirenfall

Sirenfall is a browser-based interactive scene featuring a synthesized civil defense siren built with Web Audio API. The siren uses dual-tone synthesis (515 and 618 Hz) with a rotating horn mechanism that modulates loudness, brightness, doppler shift, and stereo positioning based on the horn's angle. The scene includes a shelter window overlooking a dystopian rain-covered city with thunder effects.

The entire project is implemented as a single HTML file with MIT licensing, allowing users to build and modify it themselves. Rain and thunder are the only recorded elements; all siren synthesis is generated algorithmically.