After watching this video from @DaveVenom, I learned that the Fundamental oscillators perform true frequency modulation rather than phase modulation. This explains the unique behavior that’s been on display here. Even more interestingly, while the Wavetable VCO’s LFM is through-zero, the standard VCO’s is not.
In light of this, I decided to add Terrorform’s true FM mode into the mix. I’ve also rearranged the demo order like this:
- PM (Sine)
- PM (Triangle)
- FM (Sine)
- FM (Triangle)
That brings the total to 14 oscillators! Four of them are Terrorform. Soon I’ll need another MixMaster.
Both videos posted above have been updated, as well as the patch file in the original post.