Great link! Thanks!
From: Pd-list [mailto:[email protected]] On Behalf Of Maximiliano Estudies Sent: Tuesday, June 25, 2019 7:35 AM Cc: pd-list Subject: Re: [PD] Formant filter ? There is also this website https://www.easycalculation.com/physics/electromagnetism/biquad-calculator.php where you can calculate coefficients. El mar., 25 jun. 2019 a las 4:22, Ingo (<[email protected] <mailto:[email protected]> >) escribió: Thanks, Alexandre! This looks very helpful! Ingo From: Alexandre Torres Porres [mailto:[email protected] <mailto:[email protected]> ] Sent: Monday, June 24, 2019 9:41 PM To: William Huston Cc: Ingo; pd-list Subject: Re: [PD] Formant filter ? I'd rather use a more proper bandpass filter than bp~, which does note have a nice symmetric response. You could use [biquad~] instead, but the issue is that you'd need to generate coefficients for it. I provide the [else/bicoeff] object in else that calculates biquad coefficients and I just uploaded an update in my tutorial that shows how to do that by hand in a pd patch, see: https://github.com/porres/Live-Electronic-Music-Tutorial/blob/master/Tutorial/Vol.2/Part.09-Filters-Reverb-Karplus/31-Filters(Advanced)/2.Filters/4.EQCookbook.%5Bbiplot%5D.pd Em seg, 24 de jun de 2019 às 12:04, William Huston <[email protected] <mailto:[email protected]> > escreveu: I have one I built, it's basically 3x bp~ stages in parallel, with each stage being a double bp~ in series. Get it here: https://github.com/WilliamAHuston/BHPDtoolkit It's called: abstractions/BHFormantx3~.pd also abstractions/FormantControl.pd I have a fake resonance built in, basically an osc~ at the cutoff freq of the filter which you can blend it. It's not pretty, I built this as a PD novice. But it works well. (You may want to grep through the patches folder to find some examples where I use this.) One use I found for it, which is very cool, is to create a source which is rich in overtones, saw or square or a gritty granular snippet, send it to the filter. Tune the 3 bp~'s to a chord, and use a midi controller to set the root of the chord, to play melodies *on the filter*. HTH, BH On Mon, Jun 24, 2019, 1:50 AM Ingo <[email protected] <mailto:[email protected]> > wrote: OK! I just googled "Formant Table" and got lots of results with the frequencies of each formant. I guess by using 3 bandpass filters I should be able to build one as an abstraction. Ingo > Can anyone point me to a formant filter external that is working and not too heavy on the CPU? _______________________________________________ [email protected] <mailto:[email protected]> mailing list UNSUBSCRIBE and account-management -> https://lists.puredata.info/listinfo/pd-list _______________________________________________ [email protected] <mailto:[email protected]> mailing list UNSUBSCRIBE and account-management -> https://lists.puredata.info/listinfo/pd-list _______________________________________________ [email protected] <mailto:[email protected]> mailing list UNSUBSCRIBE and account-management -> https://lists.puredata.info/listinfo/pd-list -- Maximiliano Estudies +49 176 36784771 omslo.com <http://omslo.com> maxiestudies.com <http://maxiestudies.com>
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