Software to send text messages from a PC through a radio mic in, then read the message on a RTL-SDR?

This page summarizes the projects mentioned and recommended in the original post on /r/RTLSDR
data-over-sound sound-library Demodulation Ultrasound Fsk

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  • ggwave

    Tiny data-over-sound library

    I see no mention of ggwave! It can encode messages into bleeps and bloops with error correction and at various bitrates. It has apps for all operating systems and even web browsers (via WebAssembly, but still).

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