Hello all,
I've been doing some experimentation with some very basic IIR filtering. I am creating sinusoidal float sources with a sampling rate of 32Khz, connecting them through the gr.iif_filter_ffd() block, and then output the result to an audio sink and a spectrum scope. For my taps, I am designing them in MATLAB, negating them appropriately, and entering them into the GNURadio script. I am finding that if I use a tap vector length of greater than 4 the code stops working. Instead of a tone I get no noise. Has anyone experimented with IIR filters of a longer length? The only other IIR code I have seen is in the emph/demph filters, but that is a low order filter. Thanks, ~Chris Roberts~ MS Student, Case Western Reserve University _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
