@Aaron

I do recall Hans Jenny's videos and experiments, though I should see them again to refresh my memory. If I remember correctly they have experimented with single and dual frequencies, but when they started moving to using multiple strange effects have occurred.

I believe they said that with five or more different frequencies the geometry starts becoming truly three dimensional which might be the key to the whole thing.

@adam_ant

When you say hexagonal, you mean the visible geometry shape projection, which would actually imply one (or combination of more) of the Platonic Solids in reality, which might be the key here?