Sound field synthesis techniques like Wave Field Synthesis and Higher-Order Ambisonics aim at the physical synthesis of a desired sound field over an extended listening area. However, for practical setups the accuracy up to which the desired sound field can be synthesized over an extended area is limited. For certain applications it is desirable to limit the spatial extent of the listening area in order to increase the accuracy within this limited region for a given loudspeaker arrangement. Local sound field synthesis aims at a higher accuracy within a local listening area. An approach to local sound field synthesis is presented that is based on the concept of using virtual loudspeakers that are placed more densely around the local listening area than the existing loudspeakers. The approach is illustrated using Wave Field Synthesis as an example.

Authors: Ahrens, Jens; Spors, Sascha
Affiliation: Deutsche Telekom Laboratories, Technische Universität Berlin, Berlin, Germany
AES Conference: 40th International Conference: Spatial Audio: Sense the Sound of Space (October 2010)
Paper Number: 6-3
Publication Date: October 8, 2010
Subject: Spatial Audio: Spatial Rendering and Reproduction

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