As Mark suggested for SM1000 tx testing: codec2-dev/build_linux/src $ ./freedv_tx 1600 ../../raw/ve9qrp.raw - | ./freedv_rx 1600 - - | play -t raw -r 8000 -s -2 -
or: codec2-dev/build_linux/src $ ./freedv_tx 1600 ../../raw/ve9qrp.raw - | ./freedv_rx 1600 - - | sox -t raw -r 8000 -s -2 - ve9qrp_1600.wav will create a wave file you can then play whenever you want. I use the FreeDV GUI program to test the SM1000 tx, connecting the SM1000 to the mic input of my laptop. Cheers, David On 20/09/15 09:58, Stuart Longland 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) > ------------------------------------------------------------------------------ _______________________________________________ Freetel-codec2 mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/freetel-codec2
