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Synthesis of directional sources using Wave Field Synthesis, possibilities and limitations

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text
 

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article
 

Forme(s)

document numérique
 

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Titre

Synthesis of directional sources using Wave Field Synthesis, possibilities and limitations
 

Nom(s)

Corteel, Etienne (auteur)
 

Publication

2007
 

Description

Sujet(s)

Wave Field Synthesis   directivité   MIMO   égalisation
 

Résumé

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.
 

Note(s)

Article paru dans : EURASIP Journal on Advances in Signal Processing, special issue on Spatial Sound and Virtual Acoustics
 

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Date de la notice

2014-11-18 01:00:00
 

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