On Wed, Jun 6, 2012 at 4:31 PM, Kristoff Bonne <[email protected]> wrote: > Hi Bruce, > > > On 05-06-12 20:33, Bruce Robertson wrote: >> Both the gmsk and the fdmdv modems nicely encoded David's raw samples, >> decoded, and played them through the audio out on my pandaboard >> running linux. > Very interesting. > > How did you comile the modem? On the pandaboard itself, or > crosscompiling on a PC. >
On it itself, using Ubuntu 11.04. > A have a pandaboard running with linaro ubuntu but I cannot get it to > compile anything on it. From the moment you use some external library, > it complains it cannot link to it. > > > Concidering the CPU power of the pandaboard, it would be nice to do > codec2 encoding/decoding also on the board, so to have everything > running on one board. > I am able to run this pipeline (though I only tried it for about 20 seconds), suggesting that encoding and decoding can happen at the same time. (It takes audio from my usb headset mic, c2encodes it, runs it through the fdmdv encoding and deconding, then finally decodes the c2, and passes it to the usb headset earphones. I haven't tried it with your modem.) arecord --device=plughw:CARD=Headset,DEV=0 -f S16_LE -c1 -r8000| src/c2enc 1400 - - | src/fdmdv_mod - - | src/fdmdv_demod - - | src/c2dec 1400 - - | aplay --device=plughw:CARD=Headset,DEV=0 -f S16_LE -c1 -r8000 FWIW, I don't recommend using alsa on pandaboard/ubuntu. I'm finding pulseaudio much more reliable, especially with regard to the on-board audio-in jack. My goal is to pair the pandaboard with an FT-817, then use my TS-2000 to beacon Codec2 modulated with your modems. I'll drive or bike some distance away and see what I can hear. Alternatively, I could do a basestation reverse beacon, with the decoded audio piped to Skype or some other digitally connected service. 73, Bruce > > >> 73, Bruce > 73 > Kristoff - ON1ARF > > > ------------------------------------------------------------------------------ > Live Security Virtual Conference > Exclusive live event will cover all the ways today's security and > threat landscape has changed and how IT managers can respond. Discussions > will include endpoint security, mobile security and the latest in malware > threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ > _______________________________________________ > Freetel-codec2 mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/freetel-codec2 -- http://ve9qrp.blogspot.com ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Freetel-codec2 mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/freetel-codec2
