André Siegel

A measurement-method for the volumetric reconstruction of the sound intensity is presented. The method offers the analysis of the anisotropic part of the roomimpulse-response (RIR) throughout a large volume and avoids failures from local interferences of the sound-field with classical point-measurements. Field-holograms indicate the volumetric vector intensity as a function of frequency and time. Energy contributions to the RIR are easily tracked and the insight into the behavior of the sound-field is enhanced. Mid- and long-term applications lie in the field of room acoustical consultancy as well as physical and perceptual research. The main issue of the presented method is the application of a spherical array that reconstructs the sound field inside a volume. The contribution at hand shows results from a fundamental research on volumetric reconstruction of sound intensity at our institutes, firstly, with a review of the fundamental algorithm and secondly, with a measurement example.