[PD] Formant filter ?
Alexandre Torres Porres
porres at gmail.com
Mon Jun 24 21:40:31 CEST 2019
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:
Em seg, 24 de jun de 2019 às 12:04, William Huston <williamahuston at gmail.com>
> 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:
> It's called:
> 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*.
> On Mon, Jun 24, 2019, 1:50 AM Ingo <ingo at miamiwave.com> 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
>> > Can anyone point me to a formant filter external that is working and not
>> too heavy on the CPU?
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