i would build a small home-studio behind my house, and i was asking myself, which kind of acoustic threatment would be effective for a good sound quality of my recording room.
i've red (in book about acoustic and on the net) about diffusors, especially QRD Diffusors.
my question is, if someone has got good experiences using this sort of diffusors and if it's advisable for my project, to construct and use them.
thanks, daniel.

(excuse me for my english, but it's hard to write in a foreign language)