Nice patch. I like being able to put the poles and zeros somewhere and then see the impulse response. That's cool. I would probably change the pole radius param so that it gets asymptotically close to 1 without ever touching the unit circle (it took me a little while to figure out how it works) Chuck
On 1/29/07, Frank Barknecht <[EMAIL PROTECTED]> wrote:
Hallo, Chuckk Hubbard hat gesagt: // Chuckk Hubbard wrote: > On 1/28/07, Frank Barknecht <[EMAIL PROTECTED]> wrote: > >Frank Barknecht hat gesagt: // Frank Barknecht wrote: > > > >> Actually I've just read a nice, not too mathematical explanation of > >> biquad-filters in Perry Cook's book "Real Sound Synthesis for > >> Interactive Applications" which I'm currently reading. It's a bit too > >> expensive to buy just for the biquad pages, but maybe you can find it > >> in a library. > > > >Uhm, and another one is here: > >http://www.musicdsp.org/files/Audio-EQ-Cookbook.txt > > Thanks Frank. I came across that one a few days ago, still not quite > through it yet. I'll see if our library has Perry Cook. I just remembered, that Cook is a colleage of Julius O. Smith III and recommends JOS for people who want to dig deeper into the math. And the good thing is: JOS has a huge amount of texts online. One about biquads is here: http://ccrma.stanford.edu/~jos/filters/BiQuad_Section.html then follow the links. I played around a bit with the [biquad~] today and came up with attached patch, which is similar to CH's patch. It's attached. Ciao -- Frank Barknecht _ ______footils.org_ __goto10.org__ _______________________________________________ [email protected] mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
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