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A comment on Ggwave: Tiny Data-over-Sound Library. Parent comment

Re:Ggwave: Tiny Data-over-Sound Library by amelius on Saturday February 13, 2021 @07:53AM (#26123334)
Have you looked at other types of modulation? Like spread-spectrum:

https://en.wikipedia.org/wiki/Spread_spectrum

This would potentially give many nice features including superimposing multiple signals, so you can have full-duplex and more people can use the audio channel at the same time.

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Re:Ggwave: Tiny Data-over-Sound Library by ggerganov on Saturday February 13, 2021 @08:29AM (#26123492)
Looks interesting. I haven't tried other fundamentally different approaches different than the one I am currently using. I only recently found that my approach is very similar to DTMF, but I use 6 tones instead of 2 and I have sound markers and error correction integrated in the protocol.
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