Possibly Tenson. He is a bit touchy at times, however if you catch him on a good day..

You should know the subject of acoustics is fantastically complex; you think you have a good grasp on the fundamentals (no pun intended) and then realise in actual fact what you do know is barely scratching at the surface. This of course is not reasoning in itself for felt dots to possess real-world mechanisms, and should never be, however some acoustic devices, like pegboard resonators for instance, look equally as absurd on first appraisal.

I doubt these room tuning felt dots have real-world mechanisms however if I can conceive of a good explanation myself (other than the human psyche) or read one elsewhere then I'm not going to be dismissive. Until such time I remain, as I said, sceptical (read questioning).