[MetaSound] Custom XMod Filter Modal Test (no talking)

Experimenting making a state variable filter that supports audio-rate frequency cutoff modulation. The filter design is based on this post from Graham Wakefield: https://cycling74.com/forums/audio-rate-modulation-of-filters-at-high-resonance-how-can-i-do-it-without-things-getting-out-of-control#reply-68235b2fa30d080013de84e2 Tried to make some modal-like sounds here. The filter is receiving an impulse from an AD envelope and the timbral quality is modified by a sine wave modulating the cutoff frequency. I was able to implement this without a full understanding of the filter design, but I'd love to learn more!