Presented at the 174th Meeting of the Acoustical Society of America, 2017

Abstract

How is an acoustically diffuse field defined? To what extend are valid the equations of diffuse field theory? There are the questions addressed in this presentation. The answers are explained through more general theories, in turn explained with figures instead of formulae. The starting point is the idealization of diffuse sound field, from where the basic calculation tools used in architectural acoustics are derived. Then,we go through the physical-mathematical model of wave theory and ray theory assuming diffuse field simplifications and analyze the scope of diffuse field models. Wave models and ray models are presented in a simple format with visual support and reference to the underlying mathematical models. The criteria used to define a diffuse field in frequency domain as well as in temporal domain are analyzed. Finally, we present a review of several state of the art tools used to address the real cases diffuse field cannot be assumed.

Citation

• Accolti, E., & Di Sciscio, F. (2017). Room acoustics: Idealized field and real field considerations. Presented at the 174th Meeting of the Acoustical Society of America, New Orleans, Louisiana. Organized by the Acoustical Society of America.