As I said, I cannot design a filter with a sampling frequency below 1e6. The Python script I posted (where f_s = 1e3) does NOT work! But if I change f_s to 1e6 it works and gives me the gigantic filter.
Frederik Am 18.11.2013 14:35, schrieb Tom Rondeau: > On Mon, Nov 18, 2013 at 8:31 AM, Martin Braun (CEL) > <martin.br...@kit.edu> wrote: >> On Mon, Nov 18, 2013 at 02:19:55PM +0100, Frederik Wing wrote: >>> Hi Tom, >>> >>> what you are writing is completely right. Simply increasing the sampling >>> frequency will result in a more complex filter. >>> >>> Nevertheless the firdes.low_pass function does NOT want to calculate the >>> 101-tap-filter. But it DOES calculate the 100001-tap-filter. Really >>> strange. So this might not be a memory problem. >>> >>> The "magic border" I described is at 1MHz. Not at 1GHz as I wrote >>> accidentally. >> Can you post the exact call too firdes.low_pass(), thanks. >> >> MB > > Yes, Frederik, I'm afraid you're not being clear. You say you can't > build a 101 tap filter? That's different than what you were saying > before. Are you saying that you can't go below 1e6 sps or above it? > > Tom > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > > _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
