Freesound Forums

http://imgur.com/a/hXjfJ

Pff. Egg boxes on the walls always work [/troll-comment]

Seriously though, that’s an artistic spin on acoustic panels. How’s the frequency response in your studio now? For all my half-hearted efforts to address the bass end of my room, I still get trouser-flapping bass boom whenever I play a low G

Use the right materials - there are a handful of acoustic rockwool and fiberglass products that are standards for legitimate acoustic absorption. Realize the difference thickness, air gap, and corner placement make: http://www.bobgolds.com/AbsorptionCoefficients.htm (remember, corners meet at the ceiling, too. And the two largest areas of untreated parallel surfaces in a room will be...floor-to-ceiling.)

If you don't suck up the bass (most effectively by straddling the corners with thick enough, proper material), your bassy waves will bounce back and, when positive pressure meets negative, you get a null. Seems like you are getting uneven response. A little bit goes a long way, though. Straddle your corners with 4"thick, 2'X 4' panels and it will do more good than boxes and boxes of crap foam or thin wall panels. To start, do that, and hit your early reflection points (look up the "mirror test") with panels on the parallel side walls.