Re: [Discuss-gnuradio] DV Dongle - AMBE USB Device

[Jeff Brower]

Rick-

> > I am also thinking of writing a APCO P25 Voice to AMBE2000 frame converter 
> > and see
> > if the device can decode P25 as well.  This may be a general IMBE and
> > AMBE codec.
> >
> 
> I hope so. I looked at this a while back. What concerned me most was the
> AMBE2000/2020 documentation seemed to omit P25 style IMBE compatibility.
> Compare the docs to another DVSI product - the VC55 - to see what I mean.

If you're looking at low bitrate codecs for GNU radio, why use a hardware 
(dongle)
dependent solution?  You might look at MELPe, which provides 600, 1200, and 
2400 bps,
and can be implemented as a software solution.  MELPe is a US/NATO standard 
(STANAG
4591).  Common applications are HF radio and L band satellite apps where 
bandwidth is
very limited.

-Jeff