stegachirp FSK on top of audio band Survives WAV, robust to re-sampling stegachirp is purpose-built for WAV audio. The bit stream is FSK-modulated at 18/20 kHz, well above the audible band but within ...

Last September, Denmark was gripped by a spate of drone sightings near airports. It’s familiar territory for Hackaday, as we reported on a similar drone panic saga at British airports back in the last ...