Labels Milestones
BackVCF MK's Diode Ladder VCF Kassutronic's KS-20 https://kassu2000.blogspot.com/2019/07/ks-20-filter.html ** uses an LM13700 OTA (operational transconductance amplifier) (~$1.50, uncommon, and DIP marked obsolete) and NE5532.
- 0.769359 0.631327 0.0975343 vertex 6.36396 6.36396 3 facet.
- Normal -4.127378e-001 7.075872e-001 5.735571e-001 facet normal.
- 0.634272 0.0992813 facet normal.