Hello, > > A good start for adding FEC to Codec 2 is to test the effect of bit > > errors on each bit. Not all bits need protection. So strong codes can > > be used to protect the most sensitive bits, leaving some bits > > unprotected. > Are there drawings or scematics of the exact bitformat of a codec2 > stream, explaining the meaning and importance of all parts?
Take a look at src/codec2.c, codec2_encode() function where the parameters are packed into the frame. > So, what FEC protocol do you propose? Are there 1/2 FEC protocols out > there that are not patented? I've used Hamming and Golay codes in the past, no patent issues. Viterbi decoded convolutional codes might be OK if the delay is workable. Cheers, David ------------------------------------------------------------------------------ RSA® Conference 2012 Save $700 by Nov 18 Register now! http://p.sf.net/sfu/rsa-sfdev2dev1 _______________________________________________ Freetel-codec2 mailing list Freetel-codec2@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freetel-codec2
