The interpolated 3-D digital waveguide mesh method for room acoustic simulation and auralization

In this paper we briefly overview the digital waveguide mesh method. It is a wave-based technique for room acoustic prediction operating in the time domain. The original technique suffers from direction dependent dispersion. In this paper we discuss couple of techniques that have been applied to overcome this problem. Firstly, the interpolated mesh structure, and secondly the frequency warping technique are presented. As a case study we present simulation results and visualizations obtained with two simple room geometries. In addition, the computational requirements of 3-D interpolated mesh are presented and possibility of real-time auralization is discussed.