A
Cut the room front corners at 30 degree angle using high-mass materials
(concrete, bricks, multi layered gypsum board, etc). In case building materials
have medium mass, be sure to ll the empty space behind these walls with
mineral wool.
B
Use a combination of absorption and diusion on the side wall surfaces. Note that
thin layers of porous absorbers only reduce HF reections.
C
If the room is large enough, use diusive and absorbing element(s) on the back
wall.
D
Control low frequency room resonances using a large amount of absorption
material for example in the back of the room and in the ceiling. Carefully designed
and located panel resonator absorbers can also be used.
E
Use a combination of absorption and diusion above the listening area to reduce
acoustic reections from the ceiling.
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