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:
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
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?
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