Single layer planar near-field acoustic holography for compact sources and a parallel reflector
2016 (English)In: Journal of Sound and Vibration, ISSN 0022-460X, E-ISSN 1095-8568, Vol. 380, 129-145 p.Article in journal (Refereed) Published
We consider the problem of planar near-field acoustic holography (PNAH) and introduce a new reconstruction method that can be used to process single layer pressure measurements performed in the presence of a reflective surface that is parallel to the measurement plane. The method is specially tailored for compact sources, or for problems in which the scattered field due to the source can be neglected. The approach consists in formulating a seismic model (WRW model) in wavenumber–space and employ it for sound source reconstructions. The proposed method is validated with numerical and experimental data, and, although the most accurate results are obtained when an estimate of the surface impedance is known beforehand, we show that it can substantially improve the reconstruction performance with respect to that of free-field PNAH.
Place, publisher, year, edition, pages
Elsevier, 2016. Vol. 380, 129-145 p.
NAH, Feld separation techniques, Reflective environments
Fluid Mechanics and Acoustics
Research subject Vehicle and Maritime Engineering
IdentifiersURN: urn:nbn:se:kth:diva-189196DOI: 10.1016/j.jsv.2016.06.012ISI: 000380760300007OAI: oai:DiVA.org:kth-189196DiVA: diva2:944082
FunderSwedish Research Council, 621-2012-3723
QC 201606292016-06-282016-06-282016-09-02Bibliographically approved