Simulation and auralization of broadband room impulse responses

Computer modelling in room acoustics can today not only be done by using ray-based methods but also with wave-based methods. The acurracy provided, however, is only apparent since the uncertaintied in the input data for the computer methods are not adequately small to allow for simulation of the fine structure of stationary room transfer functions. Accordingly it is the question at which frequency the user could stop using wave-based methods and switch to ray-based methods. The Schroeder frequency could be chosen, but it is not clear in which way the uncertainties in input data influence the results quantitatively.In this paper first attempts are made towards an investigation to evaluate best cross-over frequency between wave-based and raybased methods by discussing the fine structure in frequency response curves.