> I've started tinkering with the pieces of freedv, and I've found two
> problems: The "Nc" number of channels parameter in fdmdv_demod does
> not appear to be optional as shown on two rowetel web pages, and
> fdmdv_demod is producing NUL bytes for output.
I have a patch to fix argc/argv parsing in codec2/src/fdmdv_demod.c
which fixes the Nc argument and gets the octave data dump working.
I have a recipe to change Ubuntu 12 from version 3.2 of Octave to
version 3.8 which the signal toolbox wants, as it contains function
fir1 which the octave function fdmdv_demod_c uses.
I have a patch to codec2/octave/fdmdv.m which fixes the default
setting of Nc to 14 when NumCarriers isn't defined. Was NumCarriers
defined in the fdmdv_demod octave dump in the past?
However, I'm a Mercurial person and not a svn person, so I don't yet
know how to offer these changes to you with svn.
Then I ran octave:2> fdmdv_demod_c("/tmp/demod_dump.txt",1400) and
received two plots, Scatter Diagram and timing offset, then an error
that coarse_fine_log_c is undefined. That variable is not dumped in
codec2/src/fdmdv_demod.c, perhaps it was done previously in the
commented-out //fdmdv_dump_osc_mags(fdmdv); ?
Brian
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