A simplified two‐dimensional model of acoustic diffusion.

Abstract

The acoustic control is a topic of growing interest in workspaces. For the purpose of designing acoustic solutions, it is necessary to make correct predictions of sound levels in order to advise the most appropriate acoustic treatments. There are many methodologies to predict the noise levels in industrial rooms, from the simplest empirical models based on diffuse sound fields assumption or experimental data to a more robust method such as the ray tracing technique. A new concept for the acoustic enclosure prediction was recently proposed. [Picaut (1997).] This model may be considered as an extension of the classical theory of reverberation and has been applied to a lot of situations with good agreement and low calculation time. The objective of this work is to provide an equivalent 2‐D diffusion model achieving similar prediction results in terms of sound pressure level distributions with a lower calculation time.