Sound decay in reverberation chambers with diffusing elements

Sound scattering bodies are frequently used to improve diffusion in reverberation chambers and generally produce reverberation on their own. This effect is negligible at relatively low diffuser densities; in this range the effect of increasing diffusion prevails. At high densities of the scattering bodies, however, reverberation caused by the latter makes the usual reverberation formulae unapplicable. Between both limiting cases there is an optimum range of diffuser density. This is calculated theoretically as well as determined by Monte‐Carlo simulations.