ggwave: Open-Source Tiny Library for Data-over-Sound Transmission

tom_doerr · x · 2026-08-13

ggwave is a tiny data transmission library open-sourced by Georgi Gerganov (creator of llama.cpp), currently boasting 7.8k stars on GitHub.

Core Function: Allows the transmission of small amounts of digital data between devices using sound waves (via speakers and microphones), ideal for air-gapped environments.
Technical Details: It implements a simple FSK (Frequency-Shift Keying) protocol with a bandwidth of 8-16 bytes/sec. Error Correction Codes (ECC) are used to improve demodulation robustness.
Flexibility: The library only generates and analyzes raw waveforms, allowing integration with any audio backend (e.g., PulseAudio, ALSA), and provides rich examples including web and Arduino implementations.

More from Apps