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Convention Paper

Sound Field Reconstruction: An Improved Approach for Wave Field Synthesis

Authors: Kolundzija, Mihailo; Faller, Christof; Vetterli, Martin

AES Convention 126 · Paper 7754 · May 2009

Abstract

Wave field synthesis (WFS) is a prevalent approach to multiple-loudspeaker sound reproduction for an extended listening area. Although powerful as a theoretical concept, its deployment is hampered by practical limitations due to diffraction, aliasing, and the effects of the listening room. Reconstructing the desired sound field in the listening area, accounting for the medium propagation characteristic, is another approach termed as sound field reproduction (SFR). It is based on the essential band-limitedness of the sound field, which enables a continuous matching of the reconstructed and the desired sound field by their matching on a discrete set of points spaced below the Nyquist distance. We compare the two approaches in a common single-source free-field setup, and show that SFR provides improved sound field reproduction compared to WFS in a wide listening area around a defined reference line.

Details

Published in
AES Convention 126
AES Convention
126
Paper number
7754
Publication date
May 6, 2009
Session subject
Event, Stage, and Sound Reinforcement
Affiliation
Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland; University of California at Berkeley, Berkeley, CA, USA (See document for exact affiliation information.)
Type
Convention Paper