Interactive room acoustic rendering in real time

The goal of this paper is to give an overview of real-time room acoustic rendering. The approach is based on the source-medium-receiver model, in which we model sound sources, room acoustics, and a listener. The basic techniques for each of these are presented, but the main emphasis is on the room acoustic modeling and interactive auralization. As a case study we present the structure of the DIVA auralization system developed at the Helsinki University of Technology. In addition, we describe subjective evaluations made to our system. Finally, a discussion of some applications of virtual acoustics and their computational needs are given.