Try using the freedv_tx binary. I think it's just ./freedv_tx 1600 source.raw modulated.raw
- Mark VK5QI On Sun, Sep 20, 2015 at 9:58 AM, Stuart Longland <[email protected] > wrote: > Hi all, > > What strategies do people use for testing the SM1000? I've had a report > that the binary I built would not decode FreeDV 1600 signals. > > I just tried, and indeed, I could not get it, or the production binary, > to decode a prepared signal sent from my laptop from the command line: > > My steps: > $ sox ~/hamradio/projects/broadcast/vk4_warmup.mp3 -t raw -r 16000 -c 1 > -b 16 -e signed-integer -L vk4-warmup.raw > $ c2enc 1600 vk4-warmup.raw vk4-warmup.c2 > $ fdmdv_mod vk4-warmup.c2 vk4-warmup.fdmdv > $ sox -t raw -r 16000 -c 1 -b 16 -e signed-integer -L vk4-warmup.fdmdv > -r 48000 -c 2 fdmdv.wav > $ aplay -D hw:0,0 fdmdv.wav > > I used a cable to link the computer's output to the RIG SPKR jack on the > SM1000. > > I ought to have heard the dulcet tones of Graham VK4BB announcing the > times and frequencies of the WIA broadcast -- this is the recording that > proceeds WIA News/QNews here in Queensland. Instead, I got mostly > silence, save a few squawks from the SM1000. > > Is there some way that I can produce a reference FreeDV signal that the > unit can decode? > > (The vk4_warmup.mp3 is from here: http://www.wiaq.com/ftp/vk4_warmup.mp3) > -- > Stuart Longland (aka Redhatter, VK4MSL) > > I haven't lost my mind... > ...it's backed up on a tape somewhere. > > > ------------------------------------------------------------------------------ > _______________________________________________ > Freetel-codec2 mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/freetel-codec2 >
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