I don't know if this of interest or properly relevant - but at least you get to decide ;)
Applications?
I'm guessing.. but here for info.
https://sudoroom.org/serial-over-webaudio/
@Ollie started
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
I don't know if this of interest or properly relevant - but at least you get to decide ;)
Applications?
I'm guessing.. but here for info.
https://sudoroom.org/serial-over-webaudio/