Two-Dimensional Beam Tracing from Visibility Diagrams for Real-Time Acoustic Rendering. (26th September 2010)

• Record Type: Journal Article
• Authors: Antonacci Antonacci, F. F.; Sarti Sarti, A. A.; Tubaro Tubaro, S. S.
• Other Names: Zoelzer Zoelzer Udo Udo Academic Editor.
• Is Part Of: EURASIP journal on advances in signal processing. Volume 2010(2010)
• Publication Date: 2010-09-26
• Subjects: Signal processing -- Periodicals; Traitement du signal; Signal processing; Periodicals; 621.3822
• DOI: 10.1155/2010/642316
• Languages: English
• ISSNs: 1687-6172

Abstract

Abstract : We present an extension of the fast beam-tracing method presented in the work of Antonacci et al. (2008) for the simulation of acoustic propagation in reverberant environments that accounts for diffraction and diffusion. More specifically, we show how visibility maps are suitable for modeling propagation phenomena more complex than specular reflections. We also show how the beam-tree lookup for path tracing can be entirely performed on visibility maps as well. We then contextualize such method to the two different cases of channel (point-to-point) rendering using a headset, and the rendering of a wave field based on arrays of speakers. Finally, we provide some experimental results and comparisons with real data to show the effectiveness and the accuracy of the approach in simulating the soundfield in an environment.