Tetrapol-kit March 2016

tetrapol-kit@brmlab.cz

4 participants
3 discussions

Re: [Tetrapol-kit] RP-CELP decoder doesn't seem to work
by Jan Hrach 17 Mar '16

17 Mar '16

As you can see, there is KEY_TYPE=4 KEY_INDEX=5, so your network uses encryption. We are not able to decode it. The original hardware codec decodes it this way: http://nat.brmlab.cz:8064/tpol/xgm1wspuj5.d/frames.ogg. It is encrypted, so no chance anything hearable will result. > Only a last question: How can I send the json files to the online decoder? You run cat *.json|grep '"type": "VOICE"'| grep -oE '"value": "[0-9a-f]{30}"'| cut -d \" -f 4 | blhexbit | sed -re "s/(.)(.)(.)(.) (.)(.)(.)(.) /\8\7\6\5\4\3\2\1/g" | sed -re "s/^([01]{20})/\1_/g">voice.bits and then paste the voice.bits file (or part of it as it is huge - sane is about 1500 lines a time) to http://nat.brmlab.cz:8064/ That is exactly what I did to get the above .ogg. However there is no point in it unless you see some traffic with KEY_TYPE=0 KEY_INDEX=0 or KEY_TYPE=15 KEY_INDEX=0, as you will get only encrypted gibberish. On 15.3.2016 23:49, Helio Machado wrote: > In the attached zip, I also give the wav files that are the result of using rp-celp python program. > > Please listen them and say me if this is the expected output. > > Feel free to use the attached captures to make the codec work. > > If you request it, I can capture GB of data for you ;-) > > Best regards. > > El mar., 15 mar. 2016 a las 23:38, Helio Machado (<crushedice2000(a)gmail.com <mailto:crushedice2000@gmail.com>>) escribió: > > I've found this. I don't know if you've read this yet. Seems interesting. > > http://wenku.baidu.com/view/5692b134ee06eff9aef80752.html > http://www.baidu.com/p/line__up?from=wenku > > Seems like tetrapol specs... > > El mar., 15 mar. 2016 a las 22:36, Helio Machado (<crushedice2000(a)gmail.com <mailto:crushedice2000@gmail.com>>) escribió: > > Ok. Only a last question: How can I send the json files to the online decoder? Should I convert them to some other format? > > Files: https://www.wetransfer.com/downloads/784210d89a2f8ffe6d049f3f21546de0201603… > > Thanks for your quick response! > > El mar., 15 mar. 2016 a las 20:04, Jan Hrach (<jenda(a)yakumo.hrach.eu <mailto:jenda@yakumo.hrach.eu>>) escribió: > > https://brmlab.cz/project/sdr/tetrapol/audio > > (yes, you can send them to me via mail too) > > On 15.3.2016 17:36, Helio Machado wrote: > > To what site should I upload these json files? Can I upload these files as attachment? > > > > El mar., 15 mar. 2016 15:59, Jan Hrach <jenda(a)yakumo.hrach.eu <mailto:jenda@yakumo.hrach.eu> <mailto:jenda@yakumo.hrach.eu <mailto:jenda@yakumo.hrach.eu>>> escribió: > > > > Send us session ID (the random string in URL) or these frames. > > > > On 15.3.2016 09:29, Helio Machado wrote: > > > Hi! I'm testing the latest tetrapol-kit with a TETRAPOL signal (formerly known as SIRDEE here in Spain). I capture well, and decode to JSON, but when I use the rp-celp codec to extract audio, I only get weird sounds. > > > > > > I don't know if I could send you a sample. > > > > > > crushedice2000 +=|at|=+ thatmailofgoogle . com > > > > > > Thanks in advance. > > > > > > Helio. > > > -- > > > Un saludo. > > > Helio. > > > > > > > > > _______________________________________________ > > > Tetrapol-kit mailing list > > > Tetrapol-kit(a)brmlab.cz <mailto:Tetrapol-kit@brmlab.cz> <mailto:Tetrapol-kit@brmlab.cz <mailto:Tetrapol-kit@brmlab.cz>> > > > https://brmlab.cz/cgi-bin/mailman/listinfo/tetrapol-kit > > > > > > > -- > > Jan Hrach | http://jenda.hrach.eu/ > > GPG CD98 5440 4372 0C6D 164D A24D F019 2F8E 6527 282E > > > > -- > > Un saludo. > > Helio. > > > -- > Jan Hrach | http://jenda.hrach.eu/ > GPG CD98 5440 4372 0C6D 164D A24D F019 2F8E 6527 282E > > -- > Un saludo. > Helio. > > -- > Un saludo. > Helio. > > -- > Un saludo. > Helio. -- Jan Hrach | http://jenda.hrach.eu/ GPG CD98 5440 4372 0C6D 164D A24D F019 2F8E 6527 282E

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Re: [Tetrapol-kit] RP-CELP decoder doesn't seem to work
by Jan Hrach 15 Mar '16

15 Mar '16

Ah, I thought that you use our online decorer at http://nat.brmlab.cz:8064/. If you are using software rp-celp implementation, it is expected that it doesn't work, as the codec is not yet fully implemented. On 15.3.2016 17:36, Helio Machado wrote: > To what site should I upload these json files? Can I upload these files as attachment? > > El mar., 15 mar. 2016 15:59, Jan Hrach <jenda(a)yakumo.hrach.eu <mailto:jenda@yakumo.hrach.eu>> escribió: > > Send us session ID (the random string in URL) or these frames. > > On 15.3.2016 09:29, Helio Machado wrote: > > Hi! I'm testing the latest tetrapol-kit with a TETRAPOL signal (formerly known as SIRDEE here in Spain). I capture well, and decode to JSON, but when I use the rp-celp codec to extract audio, I only get weird sounds. > > > > I don't know if I could send you a sample. > > > > crushedice2000 +=|at|=+ thatmailofgoogle . com > > > > Thanks in advance. > > > > Helio. > > -- > > Un saludo. > > Helio. > > > > > > _______________________________________________ > > Tetrapol-kit mailing list > > Tetrapol-kit(a)brmlab.cz <mailto:Tetrapol-kit@brmlab.cz> > > https://brmlab.cz/cgi-bin/mailman/listinfo/tetrapol-kit > > > > -- > Jan Hrach | http://jenda.hrach.eu/ > GPG CD98 5440 4372 0C6D 164D A24D F019 2F8E 6527 282E > > -- > Un saludo. > Helio. -- Jan Hrach | http://jenda.hrach.eu/ GPG CD98 5440 4372 0C6D 164D A24D F019 2F8E 6527 282E

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RP-CELP decoder doesn't seem to work
by Helio Machado 15 Mar '16

15 Mar '16

Hi! I'm testing the latest tetrapol-kit with a TETRAPOL signal (formerly known as SIRDEE here in Spain). I capture well, and decode to JSON, but when I use the rp-celp codec to extract audio, I only get weird sounds. I don't know if I could send you a sample. crushedice2000 +=|at|=+ thatmailofgoogle . com Thanks in advance. Helio. -- Un saludo. Helio.

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Tetrapol-kit March 2016