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Engineering notes from building Boring Meeting Alarm — Web Audio, getDisplayMedia, browser quirks, and the small choices behind a one-page tool.

• How we built a meeting silence detector in 80 lines of Web Audio

  2026-05-13 · web-audio · getDisplayMedia · astro · cloudflare-workers

  A walkthrough of capturing tab audio with getDisplayMedia, computing RMS levels with AnalyserNode, and firing a multi-channel alert when a meeting goes silent — all in the browser, no backend.

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