chapter  10
Geometric reflectors and diffusers
Pages 42

Cylinders, pyramids and plane surfaces are common items in rooms. In this chapter the performance and design of these geometric surfaces will be considered as well as fractal and optimized curved surfaces. While most diffuser design is about breaking up wavefronts by surface roughness or impedance changes, it should be remembered that even a plane surface can cause significant diffraction from its edges, provided the surface has a similar size to the acoustic wavelength.