We have already shown the capacity of common everyday masonry wall systems to serve as noise isolators.
For more serious applications such as sound studios, theatres, and other buildings where acoustics are paramount, masonry offers several specialized products.
Sound blocks have been widely used for lecture halls, swimming pool enclosures, and theatres. These concrete masonry units have one
vertical slot per core. These vents create a Helmholtz resonator affect. The Helmholtz resonator is used to deaden sound in internal combustion engine mufflers.
The newest evolution of acoustic block is the Diffuser Block by RPG Diffuser Systems as seen above. This system is composed of three
distinct units. These three units interlock together to form a wall. The result is a combination of the Helmholtz resonator principle for absorption, and excellent sound diffusion back into the room.
This product also provides space to place horizontal joint reinforcement, and offer cores which can be filled with grout, or insulation. These blocks are ideal for professional applications where
sound diffusion and absorption are critical. Both types of acoustic blocks boast STC ratings above and beyond the 52 mark.