This patch is another exploration in Formants. Hopefully, you will find this one gets a little closer to actual Formants sounds. I think it is an improvement. I had previously thought of using two bandpass filters as a video I had seen had shown more than one major Formants frequency.

This one actually tries to get the cutoffs close to what was listed as a pair of Formants, 390Hz and 2300Hz.

I suggest looking up Formants tables yourself and experiment. Adjust the envelopes directions by using the VCF attenuverters for CV.

Here is a YouTube video of a quick demo of several patches of this type: https://youtu.be/_39OfNRk7gQ