ACOUSTICALLY ABSORPTIVE PANEL

Acoustically absorptive panel comprising a porous acoustic absorber having a front surface and a non-planar rear surface; a support frame within which said porous acoustic absorber is coupled; an acoustically transparent front fabric affixed on said front surface of said porous acoustic absorber; wherein the non-planar surface is configured such that, when the acoustically absorptive panel is attached to a planar attachment surface, a chamber comprising a uneven depth air cavity for enhancing sound absorption is defined between said non-planar rear surface and the planar attachment surface, wherein said non-planar rear surface of said porous acoustic absorber has complementary surface configurations whereby such two acoustically absorptive panels may be stacked upon one another by coupling their respective rear surfaces. Said board may be directly attached to the support frame and to the porous acoustic absorber, wherein the porous acoustic absorber is surrounded by the support frame.