Estimating the velocity profile and acoustical quantities of a harmonically vibrating loudspeaker membrane from on-axis pressure data

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdrageAcademicpeer review

1 Citaat (Scopus)

Samenvatting

Formulas are presented for acoustical quantities of a harmonically excited resilient, at, circular loudspeaker in an infinite baffle. These quantities are the sound pressure on-axis, far-field, directivity, and the total radiated power. These quantities are obtained by expanding the velocity distribution in terms of orthogonal polynomials. For rigid and non-rigid radiators, this yields explicit, series expressions for both the on-axis and far-field pressure. In the reverse direction, a method of estimating velocity distributions from (measured) on-axis pressures by matching in terms of expansion coefficients is described. Together with the forward far-field computation scheme, this yields a method for assessment of loudspeakers in the far-field and of the total radiated power from (relatively near-field) on-axis data (generalized Keele scheme).

Originele taal-2Engels
Titel126th Audio Engineering Society Convention 2009
Pagina's48-59
Aantal pagina's12
Volume1
StatusGepubliceerd - 1 dec 2009
Evenement126th Convention of the Audio Engineering Society (AES 2009 Convention) - Munich, Duitsland
Duur: 7 mei 200910 mei 2009
Congresnummer: 126

Congres

Congres126th Convention of the Audio Engineering Society (AES 2009 Convention)
Verkorte titelAES Convention 2009
LandDuitsland
StadMunich
Periode7/05/0910/05/09

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