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3D soundfield reproduction using non-spherical loudspeaker arrays

Gupta, Aastha; Abhayapala, Thushara

Description

Three dimensional (3D) spatial soundfield reconstruction techniques typically need multiple loudspeakers placed on the surface of a sphere covering a desired region of reconstruction. Such array geometries have certain limitations that make them impractical in most of the intended applications. In this paper, we show how to reconstruct 3D soundfields using a set of circular arrays. The proposed method uses circular harmonics alongwith the underlying theory of wavefield propagation....[Show more]

dc.contributor.authorGupta, Aastha
dc.contributor.authorAbhayapala, Thushara
dc.coverage.spatialGlasgow Scotland
dc.date.accessioned2015-12-10T22:40:21Z
dc.date.createdAugust 24-28 2009
dc.identifier.urihttp://hdl.handle.net/1885/57431
dc.description.abstractThree dimensional (3D) spatial soundfield reconstruction techniques typically need multiple loudspeakers placed on the surface of a sphere covering a desired region of reconstruction. Such array geometries have certain limitations that make them impractical in most of the intended applications. In this paper, we show how to reconstruct 3D soundfields using a set of circular arrays. The proposed method uses circular harmonics alongwith the underlying theory of wavefield propagation. Specifically, we use the properties of the associated Legendre functions and the spherical Hankel functions for loudspeaker placement. As an illustration, we design a third order spherical harmonic reconstruction system using 16 loudspeakers.
dc.publisherConference Organising Committee
dc.relation.ispartofseriesEuropean Signal Processing Conference (EUSIPCO 2009)
dc.sourceProceedings of the European Signal Processing Conference (EUSIPCO 2009)
dc.subjectKeywords: Array geometries; Associated Legendre functions; Circular arrays; Circular harmonics; Loudspeaker array; Non-Spherical; Reconstruction systems; Reconstruction techniques; Sphere covering; Spherical harmonics; Third order; Wavefield propagation; Antenna ar
dc.title3D soundfield reproduction using non-spherical loudspeaker arrays
dc.typeConference paper
local.description.notesImported from ARIES
local.description.refereedYes
dc.date.issued2009
local.identifier.absfor090609 - Signal Processing
local.identifier.ariespublicationu4334215xPUB400
local.type.statusPublished Version
local.contributor.affiliationGupta, Aastha, College of Engineering and Computer Science, ANU
local.contributor.affiliationAbhayapala, Thushara, College of Engineering and Computer Science, ANU
local.description.embargo2037-12-31
local.bibliographicCitation.startpage809
local.bibliographicCitation.lastpage813
dc.date.updated2016-02-24T11:00:32Z
local.identifier.scopusID2-s2.0-84863749608
CollectionsANU Research Publications

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