fsk-modulation

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rohitkumar91131 / ultrasonic-airgap-messanger

An offline, air-gapped messenger that transmits data via ultrasonic sound waves (19kHz) using the Web Audio API. No Internet or Bluetooth required. Built with Next.js 16 & PWA

react javascript pwa offline-first nextjs messenger ultrasonic digital-signal-processing web-audio-api data-over-sound air-gapped fsk-modulation

Updated Jan 7, 2026
JavaScript

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