So I just bought a house. The main reason I bought it, even though (or also because) it needs a complete remodel is that someone took an attached garage, converted it into a massive den, and built another garage on. So I have this room destined to be an awesome theater, plus a woodshop/garage which I also needed. I'll be doing all the remodeling, cabinets, and a bunch of furniture over the next year or so. Den first, of course. I'll fix the collapsing bathroom floor later.
So my first question as I plan ahead (moving in a month) is this: is there any acoustic benefit to having a partially-arched ceiling? I don't have room dimensions, but it's wide enough you wouldn't want to put an arch across the whole thing. I plan to install a star field, and as a part of that would like to build some curvature in along the corners, maybe about an 18" radius. If it would be a benefit, it's enough of a reason to go ahead I think. Otherwise I could leave it square. Help?