So with all the resulting scattering of waves you noticed improvement in clarity and imaging? a clear before and after benefit? would a few panels do it noticeably or do you really need numerous diffusers as you have done for the full effect?
I have this pristine plaster ceiling with absolutely no cracks and am prevented from putting anything up there. So I have one large wall I could put a diffuser on that wall but there’s a lot of clutter with furnishings throughout the room so it may be of marginal impact. Actually, I would have to remove a painting portraying a hunt scene where horses are jumping over a fence while following dogs in pursuit of a fox.