On Fri, Jan 11, 2008 at 01:34:18PM +0100, Martin Braun wrote: > On Thursday, 10. January 2008 20:01, Patrick Strasser wrote: > > method functions. Is there something bad about designing filters with > > the Remez method? I thought it would be clever to constraint the filter > > to a number of coefficients, as this parameter is most important for > > processing speed. > > I haven't had a look at the code, but in general the Remez method is always > superior. In fact, the last course I had on filter design taught me the > window method is only really used in quick-and-dirty filter design and in > teaching, because it's so simple to explain (plus, it's easier to code). > > > Moreover, what would bring faster results, a designer using the window > > method or one with the remez method? > > I doubt the window method can be beaten in terms of speed, as it's only an > FFT > and a multiplication, but I don't know how much faster it is. > However, usually the filter design is not in the time critical part of an > application, whereas the number of taps has direct influence on performance. > Given the choice, I'd say use remez when possible. > > martin > > -- > Martin Braun > Institut fuer Nachrichtentechnik > Universitaet Karlsruhe > > http://www.int.uni-karlsruhe.de
The existing GNU Radio wrapper around the remez primitive needs help. IIRC only the low_pass case works. Perhaps one of you guys can take a look at it. Creating a few test cases would be great too ;) Eric _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
