title: The adaptive beam-tracing algorithm
abstract: The most popular models to predict sound propagation in architectural spaces involve the tracing of rays, images, or beams. Most current beam-tracing methods use conical or triangular beams that may produce overlaps and holes in the predicted sound field. Hence a new method has been developed whereby the shape of reflected beams is governed by the shape of reflecting surfaces so as to produce a geometrically perfect description of the sound propagation for halls with occluding surfaces. The method also facilitates the calculation of diffuse sound propagation by managing the energy transfer from a specular model to a diffuse model. This adaptive beam-tracing method compares well with other methods in terms of speed and accuracy.
authors.affiliation: School of Acoustics and Electronic Engineering, University of Salford, United Kingdom.
authors.initials: IA
authors.lastname: Drumm
authors.initials: YW
authors.lastname: Lam