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.
128x128nrchy

Showing 1 response by rives

I, like Zaikesman, am very surprised by your findings. However, every now and then some things serendipitously fall into place and what should be a huge problem is balanced out by something else that should also be a huge problem just by luck. That being said I would suggest that you do as Newbee suggested, but I would add a bit too it. Take the measurements at the listening position then pick 2 or 3 other positions that are various distances (say 1 to 3 feet) and various directions away from the primary listening positon. The purpose of this is to see if you are sitting in null points for the frequencies that should be accentuated. It's simple enough to calculate these and I would point you to our website tutorial the listening room . We also have a test CD that may be useful, as it has test tones calibrated for the Radio Shack analog SPL meter.