Hi I am new to this list and to the topic of freeDV. But I have built a Software-TRX (STRX), which controls a HPSDR system with Mercury,Pennylane and Metis. My system is Linux - openSUSE 13.1
Now, I have used the codec2 shared library from SVN 1324 to implement freeDV directely in my STRX (no soundcards etc). For my current tests, I am using 1400 code2-mode and 14 carriers for fdmdv. So, I am processing 320 Samples@8kHz. For the TX-Side, there was no problem. I could verify, that the fdmdv_mod() - output is correct (by using the fdmdv_demod and c2dem-Programs). So, I assume, that the TX-Side is ok. But now I try to get the RX-Side running. I have looked into the testprogram fdmdv_demod, how to do this. But I don't get a correct demodulation just with the data from the TX-side (not over HF!) in my STRX. When tracing the loop of fdmdv_demod-program with a modemtestfile, I see that reliable_sync_bit is toggling between 0 and 1. Does it not tell, wether the sync is ok? So, for a good input, after a while, it should be stable? I don't understand, what is going on: Questions: a) what is the exact meaning of reliable_sync_bit b) what is the exact meaning of the nin? c) I would like to process 320Samples@8kHz using two fdmdv_demod() calls. How to get it stable? Sorry for my questions. 73, hb9epu, Alfred ------------------------------------------------------------------------------ Slashdot TV. Videos for Nerds. Stuff that Matters. http://pubads.g.doubleclick.net/gampad/clk?id=160591471&iu=/4140/ostg.clktrk _______________________________________________ Freetel-codec2 mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/freetel-codec2
