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Synthesis of Directional Sources Using Wave Field Synthesis, Possibilities, and Limitations

EURASIP Journal on Advances in Signal Processing volume 2007, Article number: 090509 (2007) Cite this article

Abstract

The synthesis of directional sources using wave field synthesis is described. The proposed formulation relies on an ensemble of elementary directivity functions based on a subset of spherical harmonics. These can be combined to create and manipulate directivity characteristics of the synthesized virtual sources. The WFS formulation introduces artifacts in the synthesized sound field for both ideal and real loudspeakers. These artifacts can be partly compensated for using dedicated equalization techniques. A multichannel equalization technique is shown to provide accurate results thus enabling for the manipulation of directional sources with limited reconstruction artifacts. Applications of directional sources to the control of the direct sound field and the interaction with the listening room are discussed.

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Authors and Affiliations

  1. IRCAM, 1 Place Igor Stravinsky, Paris, 75004, France

    E. Corteel

  2. Sonic Emotion, Eichweg 6, Oberglatt, 8154, Switzerland

    E. Corteel

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  1. E. Corteel
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Correspondence to E. Corteel.

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Open Access This article is distributed under the terms of the Creative Commons Attribution 2.0 International License (https://doi.org/creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Corteel, E. Synthesis of Directional Sources Using Wave Field Synthesis, Possibilities, and Limitations. EURASIP J. Adv. Signal Process. 2007, 090509 (2007). https://doi.org/10.1155/2007/90509

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