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GMSK [1] among others. Pretty cool! [1] https://en.wikipedia.org/wiki/Minimum-shift_keying#Gaussian_...
Clever, an audio soft-modem. Was there a reason to not implement this as an actual modem with a frequency band assigned to either channel and then to run SLIP or PPP over it?
The goal of this library is to provide the familiar sockets interface over a non-traditional eth, in this case sound. Can you expand on your question? I think I understand what you're saying but I don't quite see what it would accomplish. And this is an "actual" modem, whatever that means. If you mean an IETF/RFC modem spec, there are many reasons. Those specs are focused on narrowband POTS limitations, which we don'…
> over a non-traditional eth,
> in this case sound
[1] https://github.com/piannucci/blurt/tree/master/blurt_py_8021...
If someone wants to play with lower bandwidth data (text, basic file transfer) over sound, it's a pretty active area in the world of amateur radio. You can download the open-source program fldigi (http://www.w1hkj.com/modes/index.htm) on 2 computers, point speakers and microphones at each other, and try sending text (or files/images). The "flmsg" program will send pre-formatted stanzas which get converted into standard forms.
That being said, doing things like TCP/IP and other data is rather difficult on radio, mainly due to the duplex requirements and frequency spacing. But in pure audio, much more possible.
Earlier quoted context omitted.
The goal of this library is to provide the familiar sockets interface over a non-traditional eth, in this case sound. Can you expand on your question? I think I understand what you're saying but I don't quite see what it would accomplish. And this is an "actual" modem, whatever that means. If you mean an IETF/RFC modem spec, there are many reasons. Those specs are focused on narrowband POTS limitations, which we don'…
> over a non-traditional eth, > in this case sound Sound is a non-traditional way of moving data?!
Earlier quoted context omitted.
Ah, yeah, that makes sense. My plans for this library are mostly focused on using the sockets directly, with the library linked by both peers. I'm really interested in being able to use this as a simple UDP client/server.
You'd get that just about for free by running SLIP or PPP over your audio modem.
This is exceedingly cool. If someone wants to play with lower bandwidth data (text, basic file transfer) over sound, it's a pretty active area in the world of amateur radio. You can download the open-source program fldigi ( http://www.w1hkj.com/modes/index.htm ) on 2 computers, point speakers and microphones at each other, and try sending text (or files/images). The "flmsg" program will send pre-formatted stanzas whi…