system-bus-radio VS wasm-audio

As opposed to AM: https://fulldecent.github.io/system-bus-radio/

https://github.com/fulldecent/system-bus-radio (out)

here is an example: https://fulldecent.github.io/system-bus-radio/

https://fulldecent.github.io/system-bus-radio/ - Tested on MacBook Air / Chrome with AM tuner at 1560 kHz. See field reports for other equipment and frequencies.

Probably because to get this stuff to work is really hard in practice.

Several years ago, we were playing with https://github.com/fulldecent/system-bus-radio to work, but we couldn't, even though we had the right MacBooks.

Have you gone fully paranoid and your air-gaped system is in a Faraday cage inside an anechoic chamber? Things like bus radio [1], coil whine and power fluctuations can be used (it has been shown) to exfiltrate data.

[1] https://github.com/fulldecent/system-bus-radio

I found the wikipedia article [1] on the subject to be helpful to understand a little bit whats going on here.

I wonder if there's more performant wasm implementations that can interface with the WebAudio API [2]? Quick search brings up things like [3]

[1] https://en.wikipedia.org/wiki/Frequency_modulation_synthesis

[2] https://developer.mozilla.org/en-US/docs/Web/API/Web_Audio_A...

[3] https://github.com/a-cordier/wasm-audio