I just installed 0.71.1 on Windows 11, and it seems to be working fine.

@porres I tried both of the example patches you posted. The first one produces significant levels of harmonics well past the Nyquist frequency which gives it a harsh sound. I think it needs a low pass filter. Also, the bandwidth parameter seems to act more like a volume control than what I expect bandwidth to do. It doesn't seem to alter the shape of the formant. It just raises and lowers the volume of all of the harmonics.

The second one produces the spectrogram I expect from FOF. The high harmonics die out to zero after the formant peak. Also, the bandwidth parameter actually alters the shape of the formant, which is what it should do.

I can't see myself using the first one, but I'll do some comparisons between the second one and paf~. I like paf~ so far. Since the patent on paf has expired, there's no reason not to use it.

@solipp Thank you!

I love the way that Audiolab modules look and work. Thank you for making it! I'm trying to use pp.eqfilter~ as a notch filter. When I close and reopen the patch, I have to reset notch and the other parameters. Is there a way to get it to remember my settings? Thank you!

@porres Thank you!

@porres I tried the paf~ that solipp linked to, and it seems to be exactly what I'm looking for. How would I get the Windows version of vosim~ from github?

@porres It's exciting to see progress on this! Thank you! I don't have time to try vosim~ today, but will definitely try it tomorrow.

I just downloaded Audiolab to get pp.spectrum~ and I love it! Thank you for making this.

F12.paf.control.pd says that there is a paf~ external, but I can't find it. This page by Miller Puckette describes paf:
https://msp.ucsd.edu/techniques/latest/book-html/node96.html
Max/MSP has a paf~ object.
I just saw that you opened an issue on paf~
https://github.com/pure-data/pure-data/issues/1685

The vosim page is here: https://kaegi.nl/vosim
Shadylib includes a voisim~ object. Shadylib isn't on deken and doesn't have a Windows version. https://github.com/sebshader/shadylib/releases/tag/2.0
Max/MSP has gen~.vosim.maxpat

Here is some background on fof, including Faust code: https://ccrma.stanford.edu/~mjolsen/220a/fp.html
Max Sound Box has Chant objects which include fof: https://forum.ircam.fr/projects/detail/max-sound-box
Csound has an fof operator. https://csound.com/docs/manual/fof.html
and an fof2 operator https://csound.com/docs/manual/fof2.html
Here is a tutorial on using fof in csound: https://www.eumus.edu.uy/eme/ensenanza/electivas/csound/materiales/tutorials/fof/fof.html

If you only do one of these, I think that paf~ would be the best. Thank you for looking at this!

The formant module in automatonism uses parallel bandpass filters, which is what I'm currently doing. I'm looking for alternatives to the bandpass filter approach.