Thanks guys. I was also thinking a Moog style filter with first order sections inside a feedback loop might work me, since it performs well under high rates of coefficient changes.
It seems like you could make a fully general 2nd order filter by using two first order shelf filters. In addition to the typical low and high pass Moog filters you could also synthesize peaking and shelving. For peaking you would make one section a low-shelf and the other a hi-shelf with equal shelving gains. Then you would use the the global feedback to adjust the Q. But one problem with that approach is I don't have parametric equations for setting the coefficients, although I would guess it wouldn't be too hard to figure out. By chance, would any of you done the math for that? -Chris On Sun, Nov 3, 2013 at 9:36 AM, Ove Karlsen <m...@ovekarlsen.com> wrote: > A linear smoother might fix some issues, on filters that are sensitive to > fast changes. > > Also for filters that seems to work fine with EQs, highpasses, my own > Minimal-phase IIR Gaussians work fine (Beneficient Open-Source Licence). > Variable order up to 9th, and variable cutoff, with 5 onepoles in parallel. > Which I worked out in my own math, and can be referred to as "Karlsen > Gaussians" if neccesary. > > -- > Ove Karlsen, > www.ovekarlsen.com > > -- > dupswapdrop -- the music-dsp mailing list and website: > subscription info, FAQ, source code archive, list archive, book reviews, dsp > links > http://music.columbia.edu/cmc/music-dsp > http://music.columbia.edu/mailman/listinfo/music-dsp -- dupswapdrop -- the music-dsp mailing list and website: subscription info, FAQ, source code archive, list archive, book reviews, dsp links http://music.columbia.edu/cmc/music-dsp http://music.columbia.edu/mailman/listinfo/music-dsp
