# SIRENFALL

> SIRENFALL: a free browser scene, a shelter overlooking a rainy city.

- **Website:** https://sirenfall.live
- **Pricing:** unknown
- **Categories:** Developer Tools, Video & Audio
- **Tags:** developer-tools, video-audio, design
- **Platforms:** Web, CLI
- **Last verified:** 2026-09-10
- **Canonical page:** https://linkrena.com/tools/sirenfall

## About

SIRENFALL is a free browser scene: a shelter overlooking a rainy city. Pull the breaker lever to power a civil-defense siren, synthesized live in your browser with Web Audio, not played from a recording. The siren is two tones a minor third apart, 515 Hz and 618 Hz, generated in real time, with a horn that sweeps once every 15 seconds.

Rain and thunder carry on in the scene, with a shutter and a CRT monitor as additional controls. No signup, no install, works in any modern browser.

How it works : the siren physics, the numbers, and answers to common questions. Double-click the window or press F for fullscreen; click the wall monitor or press S to save a picture.

The siren is synthesized live in your browser. It is not a recording.

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