I think I might have found this in HoaLibrary (see picture). I'd be curious to hear of any experiences here? Is hoa.2d.map~ the fastest route to cartesian signal panning?

Perhaps the quad-spatializer from the examples is of interest?

"note that once the trajectory message arrives, all further calculations are carried out in the signal domain, so that imaging can be maintained even with very fast movements. movements can also occur at audible frequencies, if you're into panning modulation synthesis."

@SLO ~|• Thanks for the suggestion. I have seen that before but it could be useful, perhaps before any ambisonic panning eg sources spatialised in quad, then the four quad sources spatialised. And yes - panning modulation synthesis is indeed the sort of thing I'm hoping to explore.