The adaptive beam-tracing algorithm

Drumm, IA; Lam, YW

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.

Citation

Drumm, I., & Lam, Y. (2000). The adaptive beam-tracing algorithm. ˜The œJournal of the Acoustical Society of America (Online), 107(3), 1405-1412. https://doi.org/10.1121/1.428427

• Journal Article Type: Article
• Acceptance Date: Oct 26, 1999
• Publication Date: Mar 1, 2000
• Deposit Date: Nov 18, 2019
• Journal: The Journal of the Acoustical Society of America (JASA)
• Print ISSN: 0001-4966
• Volume: 107
• Issue: 3
• Pages: 1405-1412
• DOI: https://doi.org/10.1121/1.428427
• Publisher URL: https://doi.org/10.1121/1.428427
• Related Public URLs: https://asa.scitation.org/journal/jas