at least it isnt square! you should put the desk alongside the short wall, and try to elminate the parallel surfaces with some wall treaments.. like books cases or whatnot... Should be decent!
Well box one is ticked there, i guess some absorbent foam is in order. Cheers prof!
http://www.studiospares.com/acoustics/a stictiles/
maybe i'll coat my entire room, that'll take care of the 'other' problem too....
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