very basic, more explanation and a sound example here:
Restricting fm to harmonic sidebands after[Chowning, 1973]. Restriction actually happens because of the specs, not server-side.
Compar is a feed-forward resonator network featuring three ComplexRes nodes (available from https://github.com/supercollider/sc3-plugins ).
ComparFeedback implements an FM feedback matrix based on the ComplexRes UGen. The number of nodes can be set when defining the synthesis engine. Compa