Binaural scale modelling for auralisation and prediction of acoustics in auditoria

Abstract

A normal listening situation in a room can be modelled by a transmission system between the inputs of sound source(s) and the outputs of receivers. In regard to one listener in such a situation, a linear time-invariant system with two outputs and probably several inputs may be appropriate. Consider a point at the eardrum of a listener as an output of this system. The system involves, therefore, the transfer properties of sound source(s), the room under consideration and the external ear of the listener involved. Based on this perspective, prediction of both objective and subjective properties of sound fields in auditoria can be performed by using tenth-scale modelling. For this purpose, the conventional modelling method has to be extended to contain a head-related sound receiver as well as some suitable sound sources. A computer-aided procedure facilitates digital signal processing for binaural auralisation and evaluation of acoustic qualities of auditoria.