Efficient numerical method for evaluation of sound field in room

Abstract
Among frequently used approaches for evaluation of the sound field inside a room is the one based on using of image source method. This method has the advantage of a very accurate calculation of the reflections, but for higher order reflections, the calculation explodes due to an exponential increase of the number of possible image sources. Numerical method which makes the convergence of the infinite row in the sound level computation faster, will be presented in this paper. In this way the sound level at an arbitrary room point can be predicted only by means of the energy contribution of a relatively small number of image sources considerably shortening the computing time.