A browser-based acoustic data link for air-gapped, peer-to-peer transmission using device audio hardware. Built with React and the Web Audio API, it encodes text and files into 8-FSK audio signals to transmit data wirelessly over sound waves. Features a custom FSK protocol, CRC32 verification, and a distinctive vintage signal intelligence UI.

This is a library and a test app besides this, based on the Angular framework for communicating to a micro-controller through a headphone jack