Absorbers and diffusers in rooms and geometric models

So far, this book has discussed how to design diffusers and absorbers, but mostly in isolation of where and how they are applied. The chapter starts by presenting some of the issues arising from the application of absorbers in rooms, especially the issue of the translation of absorption coefficients from free field measurements to reverberation chamber measurements or to full room application. The chapter then proceeds to discuss how absorption and diffuse reflection properties are represented in geometric room acoustic models and the problems this presents to obtaining accurate room predictions.