[GreenKeys] Something silly

[epvgk at limpoc.com]

Hey, that's pretty cool and clever!

eric

On Mon, Jan 23, 2017 at 10:24:24PM -0800, keelan at beefchicken.com wrote:
> I got to thinking recently... Web browsers have gained better audio support
> in recent times, and it should be possible to generate AFSK tones entirely
> in the browser.
> 
> And it is. I've put together a demo here:
> 
> http://beefchicken.com/rtty/
> 
> The interface isn't anything to write home about, this is just a quick
> wrapper for a clump of javascript code that makes the magic happen. A bit of
> random button mashing sound make the function of the poorly labeled buttons
> become apparent in short order. Basically, set up your mark/space
> frequencies and baud rate, and hit 'start audio'. If your browser works, you
> should hear the mark frequency. Poke the 'Encode' button and the AFSK will
> commence. This is all 'rendered' locally, if you load this page up it will
> continue to work even without an internet connection.
> 
> I've tested it successfully with Chrome and Safari. Firefox doesn't work
> (haven't bothered to figure out why yet), and I can't be bothered to test it
> with IE, because I'm 98% certain IE doesn't have support for the features
> I'm using here.
> 
> The source is available here:
> 
> https://github.com/naleek/rttyjs
> 
> I'm also working on a 'streaming' system that uses this code to generate the
> tones locally, based off of a live data stream, but I'm not sure it's worth
> the effort. It would mean a single 'radio station' could work with different
> baud rates/codes.
> 
> - Keelan
> VE7NCR
> 
> 
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