fsk-modulation
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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
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Jan 7, 2026 - JavaScript
An air-gapped acoustic data transmission engine that streams digital payloads over inaudible, near-ultrasonic sound waves using advanced DSP and SECDED error correction
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Mar 22, 2026 - TypeScript
🔊 Transmit messages offline with Sonic Chat, an air-gapped app using high-frequency sound waves for secure device communication without internet access.
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May 23, 2026 - JavaScript
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