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Neat library! Your post mentions not finding any reliable modem libraries. I'm curious what issues you had with mine, if you tried it? https://quiet.github.io/quiet-js
Hi, I did try it and it was working quite good when the devices (phone and laptop) were within ~30 cm. After increasing the distance and putting on the TV in the background it wasn't working that well any longer. I tried only the default protocol with audible frequencies (the ultrasound option didn't work, but my phone does not support the ultrasound option with my application too. guess it's hardware limitation). I…
Interesting. What modulation does yours use?