Formant oscillators

[magnetophon]

I made some oscillators that I would love to see in Surge:

https://github.com/magnetophon/faustOscillators/blob/master/formant.dsp

There's 3 different types, but they all create a formant with variable formant frequency and bandwidth.
It's remarkable how similar the PAF and the FM sound, given their totally different working principle and subsequent waveform.

The FOF oscillator is very similar to the windowing oscillator in Surge, but it has more parameters to shape the window.
In this implementation I used a sine as the osc being windowed, but you can of course do it with any osc, as long as you can set the frequency and you can retrigger it.

I can imagine the windowing function sans oscillator would also be great in a filter slot, so you can window any oscillator, but that's probably unlikely because of your remark in #3669:

Filters are super hard because of the SSE architecture

Use as much or as little from the code or the ideas as you want.
Enjoy!