Ok, so I have an input audio chunk, from DC-48KHz, sampled at 96KHz. I want to extract 20KHz to 32KHz, and shift this down to DC (DC-12KHz). I think I need the freq_xlating_fir_filter_ccc() block, but I've seen conflicting information about how to use this block.
In GRC, what parameters do I give to this block? The FIR filter is applied after downconversion, correct? But that filter "runs" at the *input* sample rate (prior to decimation) correct? If I want to grab 20KHz to 32KHz, do I tell the block that my center frequency is 26KHz? (20KHz + output_bandwidth/2)? Call me confused. -- Marcus Leech Principal Investigator Shirleys Bay Radio Astronomy Consortium http://www.sbrac.org _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
