Two decades of sound diffuser design and development - Part 1: Applications and design

The last 20 years have seen a vast increase in knowledge concerning the app lication and design of sound diffusers used in architectural acoustics. An ability to predict, measure, quantify, and optimize the scattering from sur faces has been developed. The addition of numerous surface types has expand ed the acoustical palette significantly. New diffusers have found widesprea d use in all facets of architectural acoustic design. The historical develo pment of sound-diffusing surfaces that have predictable performance is revi ewed and their applications are illustrated.