Thanks for all the comments!

This is for a product, not a one-off, so I don't want to handle
translation on some other computer. I need to send mono audio from the
PIC32 (adc input, currently looking at AKM I2S parts, since we already use
them) to a web browser somewhere on a private network (which spans the
US). On my home Fedora server, I've sent MP3 using http. MP3 is a bit hard
to encode (though the VLSI chip looks interesting) and probably also has
licensing issues. Pure PCM looks a bit bandwidth hungry, but ADPCM looks
easy to encode (Microchip has an application note on it) and appears to
result in about 4:1 compression (comparing a PCM wav file to an ADPCM wave
file).

I'd like this to play through a browser with nothing special at the
browser end. I think ADPCM WAV could be played by pretty much anything.
The advantate of doing it over HTTP is that I think I know how I'd do it
(similar to image file transmission in HTTP2). I agree that UDP would be
more efficient, but I have do figure out what protocol the browser plugin
would expect the data to show up as and implement that.

Again, thanks for the ideas! I'll continue investigating this.

Harold



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