Hi Kurt, Adding onto what Mel mentioned, FreeDV has been around since the early 2010s but during that time, more and more FreeDV modes have been added as well as the SM1000 and the ezDV device (both of which were at the FreeDV booth at Pacificon). That may be part of the reason for the confusion.
Longer term, we hope to eventually replace the multiple FreeDV modes that exist today with a single "universal" mode, which will help reduce confusion and improve ease of use (no need to figure out the best mode to TX in). If you have codec or DSP experience, you can take a look at the GitHub issues at https://github.com/drowe67/codec2/issues to see if you're interested in working on some of the stuff required to make this happen. Thanks, -Mooneer K6AQ On Thu, Nov 23, 2023 at 10:32 AM Mel Whitten <m...@melwhitten.com> wrote: > > Hi Kurt, > > For HF... > AOR had (and still has...) a DV "fast modem" using AMBE codec (it also has > slick digital image transfer but rarely ever used). AOR's modem(s) have no > connection/compatibility with later digital voice derived from hacked > Digital Radio Mondiale (DRM) using hacked MELP/LPC codecs followed with > others including FDMDV. > > Later, FreeDV was developed by hams/for hams from scratch using open > source CODEC2 which brings us up to what is being used now. FreeDV also > has a "hardware" version (SM1000) also plus a new one (ezDV) available > soon. There is more to DV's ~25 years history but that’s for another time. > > Yes, Mooneer K6AQ was demonstrating FreeDV at Pacifcon with his ezDV > hardware wirelessly connected to an iCOM IC705. > > Look for "free" PC software FreeDV on the web site freedv.org and you'll > have the latest in narrow BW/low bit rate codec HF DV. > > Technology marches on... you'll have to check in more often. 😊 > > Mel, K0PFX > > > -----Original Message----- > From: Facility 406 <facility_...@bruteforcedevelopment.com> > Sent: Wednesday, November 22, 2023 8:42 PM > To: freetel-codec2@lists.sourceforge.net > Subject: [Freetel-codec2] Trying to straighten something out... > > Around 2000, or 2001, some time after AOR came out with their voice modems > for $$$$, I was looking up digital voice, vocoders, et cetera. > > I came across, I think, this forum, but it's called Freetel, and I recall > FreeDV, and a company, in Australia, I think, that had hardware digital > voice modems for about $200 (I didn't have the money for two at the time), > then there's some new PC based digital voice, and a fellow this afternoon > was talking about, either FreeDV, DV3, DVFree, DV, he wasn't too sure, > actually... > > It's all very confusing, and I haven't been able to keep track over the > years. > > He also mentioned some sort of presentation at Pacificon, with a couple of > low power HF rigs connected to each other to demonstrate the digital voice > system. > > Are these the same, just evolution of the same system, all different, or > what? > > Kurt > > > > > _______________________________________________ > Freetel-codec2 mailing list > Freetel-codec2@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/freetel-codec2 > > > > _______________________________________________ > Freetel-codec2 mailing list > Freetel-codec2@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/freetel-codec2 >
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