On the diffusion of the sound field in a reverberation room

The determination of the sound absorption coefficient according to ISO 354 depends on the measurement of the reverberation time which, in turn, must be determined in diffuse field conditions. It is then of importance to determine how to state such conditions. This paper aims at describing the diffusion of the sound field in the space and frequency domains of the reverberation rooms taking advantage of measurements in the reverberation room of ITC-CNR in Milan