Curved vs normal ceiling corners...

T

Tod

Audioholic
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?
 
B

bpape

Audioholic Chief
You really don't want any large concave surfaces in a listening space. They tend to focus sound just like a lens making things very uneven.

Bryan
 
AVRat

AVRat

Audioholic Ninja
Generally, bass accumulates in room corners, which is where the most bass-trapping is applied. Soffits around the ceiling are usually built to aid with the implementation.
 
T

Tod

Audioholic
So those are the two things I was sort of thinking about - I knew about the bass traps/corner issue, and while people tend to put those in vertical corners I couldn't help but wonder if the ceiling plays much of a part in that.

The bit about the lens though...mostly I was afraid there would be some possible problem with the concept, sort of like that. I'll have acoustic panels on the walls as well - in a probably 14' wide room, would a couple of feet of curve on the ceilings still matter? It's a design I've seen photos of a few times anyway.
 
B

bpape

Audioholic Chief
It all depends on where it is in relation to the seating so you can determine if the focusing is going to be right at the seats.

Bryan
 

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