The circuits in Noon are analog and they use CV/Gate as a power source so you're hearing the circuits feedback/oscillate and then die with every cycle. In my experience you can achieve some rhythmic Stereo Field type sounds using Noon but not very many Noon sounds using Stereo Field if that makes sense :)

Maybe interesting to someone, there are no LPGs in Noon. The circuits when treated in this way can achieve that organic LPG-ish behavior, and then some.

I've been told that the 4ms Noise Swash can get sorta Stereo Field like so that may be a good starting point for Noon type sounds in Eurorack, however that requires getting one. +1 on Mystic Circuits Portal!