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Efficient Delay Interpolation for Wave Field Synthesis

: Franck, A.; Brandenburg, K.; Richter, U.

Audio Engineering Society -AES-:
125th Audio Engineering Society Convention 2008. Convention Papers. CD-ROM : October 2-5, 2008, San Francisco, CA, USA
New York, NY: AES, 2008
ISBN: 978-0-937803-65-3
Paper 7613
Audio Engineering Society (Convention) <125, 2008, San Francisco/Calif.>
Conference Paper
Fraunhofer IDMT ()

Wave Field Synthesis enables the reproduction of complex auditory scenes and moving sound sources. Moving sound sources induce time-variant delay of source signals. To avoid severe distortions, sophisticated delay interpolation techniques must be applied. The typically large numbers of both virtual sources and loudspeakers in a WFS system result in a very high number of simultaneous delay operations, thus being a most performance-critical aspect in a WFS rendering system. In this article, we investigate suitable delay interpolation algorithms for WFS. To overcome the prohibitive computational cost induced by high-quality algorithms, we propose a computational structure that achieves a significant complexity reduction through a novel algorithm partitioning and efficient data reuse.