I can now decode Codec 2 1300 and 2400 using LPCNet Neural Net speech synthesis:
http://www.rowetel.com/?p=6599 - David On 04/01/19 06:04, David Rowe wrote: > Hi Sebastien, > > I looked into this a few years ago. Turns out Gray codes don't always > perform better than natural binary numbers in channels with bit errors: > > https://www.rowetel.com/?p=3079 > > The natural/gray options are for experimental purposes. > > These days we're moving towards FEC protecting bits, so any benefit of > using natural versus Gray coding isn't significant. > > Cheers, > > David > > > On 03/01/19 21:51, Sebastien F4GRX wrote: >> Hello, >> >> I see that fields in codec2 frames are gray coded, sometimes always, >> sometimes optionally, with gray coding being the default unless >> --natural is passed to command line tools, which is probably never the >> case. >> >> So, what are the real use cases that disable gray coding? >> >> Is it shocking to assume that gray coding is actually always used? >> >> Thanks, >> >> Sebastien >> >> >> >> _______________________________________________ >> Freetel-codec2 mailing list >> Freetel-codec2@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/freetel-codec2 >> > > > _______________________________________________ > Freetel-codec2 mailing list > Freetel-codec2@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/freetel-codec2 > _______________________________________________ Freetel-codec2 mailing list Freetel-codec2@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freetel-codec2
