Show HN: Sirenfall, a civil defense siren synthesized in Web Audio

By beeswaxpat · 2026-09-03 · 4 points · 0 comments

I built a cool browser scene, a shelter window over a dystopian city in the rain. Pull the breaker and a siren tower spins up. The wind-down is super unsettling and I love it. The siren is not a recording. Two port rings make a 5:6 dual tone, 515 and 618 Hz. The horn turns at 4…

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