ggwave
Tiny data-over-sound library
ggwave is a compact C++ library for transmitting small amounts of digital information between nearby devices through sound. It uses a frequency-shift keying protocol that converts data into audible or ultrasonic audio tones. Reed-Solomon error correction improves reliability when recordings contain noise or imperfect frequency detection. The library generates and analyzes raw waveforms while allowing applications to choose their own audio capture and playback systems. It supports use cases...