Very interesting to see the build out. Thank you for posting. From what I could tell at high-speed, it looked like the implementation focussed on good design, as opposed to exotic materials (licensing super carbon technology ).
Interesting to see both "soft" and rigid fiberglass in various air spaces.
I have hidden a lot of that stuff on the floor behind a bar in the room, inside a stand for the cable tv devices, and inside the walls. Those are all velocity-based solutions, it seems to me. I wonder what they did for pressure? Maybe the room size itself helps a lot. I dream of tall ceilings at night...