On Sun, 2011-04-03 at 08:48 +0200, Marcin Szelest wrote: > Hello again, > > > I've fixed sampling rate for 19kHz subcarier, but problem still existed. > > I found that throttle connected between WBFM and USRP2 makes situation better. > Now I have better quality, but some disortions are still audible.
This is a really good indication that your sample rates are off somewhere. The throttle block should never be used when a hardware interface is involved. Check your sample rate conversions. --n > > > Regards, > Marcin > > > 2011/3/30 Ed Criscuolo <edward.l.criscu...@nasa.gov>: > > Looks like you have your interpolator and your multiply blocks switched. > > > > The way you have it, the L-R audio is interpolated up to a 200k > > sample rate, and then multiplied with a 19khz subcarrier at > > a 44.1k sample rate. > > > > Do the multiply first, then interpolate the product. > > > > Or alternately, simply change the 19 kHz sample rate to 200k. > > > > @(^.^)@ Ed > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > http://lists.gnu.org/mailman/listinfo/discuss-gnuradio _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
