Transferable Acoustics based on Spatial Analysis and Re-Composition

Abstract:
Within this paper we present a new concept how to transfer the acoustic properties form one to another room, whereby both rooms should be equipped with a 3D audio rendering system. Starting from specific assumptions the transferability will be demonstrated. The basic required procedures will be introduced and deduced. At first, an acoustic measurement procedure is applied, both to the target and the reproduction room to retrieve directional room impulse responses. Secondly, resulting measurement responses are analyzed to obtain metadata, which are used for the spatial re-synthesis process. Based on these metadata the transfer procedure will be derived by using the compact notation of spherical harmonics (SH). This approach will allow optimal and efficient overall results. Besides that, it provides the possibility to examine systematically differences in several measured rooms, and to modify the properties of the observed reproduced room acoustics. Primarily results of the spatial analysis stage are given in this article.