> Why would it take 8 clocks? Surely the hardware could do the hard > part (jam it to zero immediately) and the software could do the rest > (if it needs to taper off over 8 clocks, end with the right samples). >
Ramping down results in a cleaner spectrum. Immediate shutoff splatters the band. > Hmm, in fact, why is this a problem at all? Why can't the software > ensure that the final sample before underrun is a zero? The hardware > will then keep repeating this final sample forever. That would be the best way to go. > (I suppose this would be possible if you aren't using any of the > upconverters -- but if the FPGA or the DAC is upconverting, then you > have to jam a real zero, not an upconverted zero? Is this even > possible?) An upconverted zero is still a zero. It's a multiplicative process. Matt _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
