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

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

1 Citation (Scopus)

Abstract

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).

Original languageEnglish
Title of host publication126th Audio Engineering Society Convention 2009
Pages48-59
Number of pages12
Volume1
Publication statusPublished - 1 Dec 2009
Event126th Convention of the Audio Engineering Society (AES 2009 Convention) - Munich, Germany
Duration: 7 May 200910 May 2009
Conference number: 126

Conference

Conference126th Convention of the Audio Engineering Society (AES 2009 Convention)
Abbreviated titleAES Convention 2009
CountryGermany
CityMunich
Period7/05/0910/05/09

Fingerprint Dive into the research topics of 'Estimating the velocity profile and acoustical quantities of a harmonically vibrating loudspeaker membrane from on-axis pressure data'. Together they form a unique fingerprint.

Cite this