Barrel and pyramidal-shaped wall sound diffusers combine shape and high-impact hardness to diffuse sound evenly across rooms to control “flutter” and “echo” effects from sounds in the room. Wall sound diffusers are excellent, low-frequency sound absorbers. By absorbing low-frequency sounds, while reflecting the higher frequencies, the room maintains a “bright” sound. We offer three types of wall sound diffusers: standard (WD), lowfrequency absorber (WDA) and a sound-reflective diffuser (WDL).