You have 12 corners in a rectangular room. Can you treat the wall/ceiling corners??
Treat the vertical corners where you can. The primary of the modes can be difficult to treat and you can end up with an over-absorbed room (dead). Usually 20% coverage is enough to bring the decay times down to manageable. If begins to sound too dead with all the trapping, you can cover the traps that are not in an area that will cause early reflections with thin plywood, paper or plastic to allow the mid and high frequencies to stay in the room a little longer.
John H. Brandt
Recording Studio Design/Consulting, Acoustics, & Electronics
Jakarta, Indonesia See our new PRODUCTS page.
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