Generalised Image Source Method as a Region-to-Region Transfer Function

Sound propagation inside reverberant rooms is an important topic of research. This is due to its impact on a plethora of applications especially in spatial audio. Room transfer function (RTF) simulations methods play a major role in testing new algorithms before implementing them. Allen and Berkley's image source method for simulating room transfer function has recently been generalised [1] to incorporate arbitrary source and receiver directivity patterns. In this paper, we further illustrate potential applications of the generalised model for recording, reproduction and manipulating spatial audio within reverberant rooms. We provide detailed mathematical equations of (i) generalised image source method, (ii) its interpretation as a model for region-to-region transfer functions, and (iii) an outline of potential applications of the model.