Any guess on how the acoustics would be impacted by a room with slanted ceilings such as the one in the photo below:?

I'd think you'd get some different reflections, maybe better maybe worse?

I don't really know?

It'd be interesting to do a graph of that room. See how the sound waves react in there.

David, Dr. Toole and others emphasize how difficult it is to predict the effect of non-parallel walls on room modes and the separate effect of reflections from the room boundaries at about a quarter-wavelength distance. Hopefully, because of the continually varying distances between the angled surfaces the number of mode and reflection frequencies would be much greater and would lead to an overall smoother response.

Thanks for the input. A lot of the houses we have looked at have some type of slanted ceiling in the upstairs. This particular one is worse than most so was just wondering. Ideally I'd like to find a room that I can fit a projector in, but a nice alternative would be to have any room separate from the living room that I could fit a large TV and some Axioms in so I can have a place to hide

Wasn't Jason's(myrison) HT room similar to that? Seems to me it was and he thought it worked very well.

We have the HT room setup in a room with slanted walls and acoustics is excellent - without Audyssey or other room correction applied.

There is a guy on the elemental designs forum that has a room just like that. He placed black acoustic panels along the walls and each slanted ceiling, said it helped, but before it was not bad.

It is a little bigger than yours, but you get the idea..before and after treatment shots....

That's what they all say.

Really! They have injections to do that now?

That looks both strange and somewhat awesome with all of the treatment panels.

Yea, I've seen a few photos over the (many) years of people using this "bonus room" for a home theater and don't recall anyone mentioning any more (or less) acoustical issues than other rooms without slanted ceilings.