Resonant modes and taming the room


I measured my listening room and calculated the room modes, and graphed them today. I was trying to determine if/where the resonant frequencies were too closely grouped. Ultimately I was pleasantly surprised by the fact that I do not show any serious problems.
My question though is, how can I tame the room to eliminate the areas of congestion in the modes I am experiencing? Are there differing approaches based on the frequency of the modes?
My room is L 22'-5" x W 12'-10" x H 6'-5". I was concerned about the low ceiling, but it appears to help in this application rather than hinder.
Any insight you might offer would be appreciated.
nrchy

Showing 2 responses by zaikesman

I am a little surprised that your calculations didn't show any serious problems - given the fact that your room's measurements are very close to doubling each dimension, I would think some strong modes should exist.
Interesting take about the joist orientation, Sayas - I've never considered this before, but it certainly sounds reasonable (if maybe not as significant as some other more obvious factors).