On the local plane wave methods for in situ measurement of acoustic absorption

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Abstract

In this paper we address a series of so-called local plane wave methods (LPW) to measure acoustic absorption. As opposed to other methods, these methods do not rely on assumptions of the global sound field, like e.g. a plane wave or diffuse field, but are based on a local plane wave assumption. Therefore, the LPW methods can be used for any given surface/absorbing material and any arbitrary sound field. The absorption coefficient can be calculated based on a measurement of the acoustic pressure in a number of points in the vicinity of the absorbing surface. The local plane wave methods are illustrated by some numerical and experimental examples.
Original languageEnglish
Title of host publicationProceedings of the 21st International Congress on Sound and Vibration, ICSV 21
Place of PublicationBeijing, China
PublisherInternational Institute of Acoustics and Vibration (IIAV)
Pages-
ISBN (Print)9781634392389
Publication statusPublished - 13 Jul 2015
Event21st International Congress on Sound and Vibration, ICSV 2014 - Beijing, China
Duration: 13 Jul 201417 Jul 2014
Conference number: 21

Publication series

Name
PublisherIIAV

Conference

Conference21st International Congress on Sound and Vibration, ICSV 2014
Abbreviated titleICSV
CountryChina
CityBeijing
Period13/07/1417/07/14

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  • Cite this

    Wijnant, Y. H. (2015). On the local plane wave methods for in situ measurement of acoustic absorption. In Proceedings of the 21st International Congress on Sound and Vibration, ICSV 21 (pp. -). Beijing, China: International Institute of Acoustics and Vibration (IIAV).