Effects of a finite size reflecting disk in sound power measurements

Zhong, J; Tao, J; Niu, F; Qiu, X

Effects of a finite size reflecting disk in sound power measurements

Zhong, J

Tao, J Niu, F Qiu, X

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Publication Type:: Journal Article
Citation:: Applied Acoustics, 2018, 140 pp. 24 - 29
Issue Date:: 2018-11-01

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Field	Value	Language
dc.contributor.author	Zhong, J https://orcid.org/0000-0002-9972-8004	en_US
dc.contributor.author	Tao, J	en_US
dc.contributor.author	Niu, F	en_US
dc.contributor.author	Qiu, X https://orcid.org/0000-0002-5181-1220	en_US
dc.date.available	2020-11-01T18:03:11Z
dc.date.issued	2018-11-01	en_US
dc.identifier.citation	Applied Acoustics, 2018, 140 pp. 24 - 29	en_US
dc.identifier.issn	0003-682X	en_US
dc.identifier.uri	http://hdl.handle.net/10453/129859
dc.description.abstract	© 2018 Elsevier Ltd In practical sound power measurements in an anechoic room, a baffle sometimes has to be used to support the sound source under test so that the anechoic room can be used as a hemi-anechoic room by laying a reflecting plane. To understand the effects of a finite size reflecting plane on measurements quantitatively, this paper investigates the effects of a disk on sound power measurements by formulating an exact solution to the problem based on the spheroidal wave functions. Three practical measurement cases are considered and the correction terms for the cases are presented based on numerical simulations. Experiments are conducted to validate the analytical solutions and numerical results.	en_US
dc.relation	http://purl.org/au-research/grants/arc/LP140100740
dc.relation.ispartof	Applied Acoustics	en_US
dc.relation.isbasedon	10.1016/j.apacoust.2018.05.007	en_US
dc.rights	info:eu-repo/semantics/openAccess
dc.subject.classification	Acoustics	en_US
dc.title	Effects of a finite size reflecting disk in sound power measurements	en_US
dc.type	Journal Article
utslib.citation.volume	140	en_US
utslib.for	0203 Classical Physics	en_US
utslib.for	0913 Mechanical Engineering	en_US
utslib.for	1201 Architecture	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Mechanical and Mechatronic Engineering
pubs.organisational-group	/University of Technology Sydney/Students
utslib.copyright.status	open_access	*
pubs.publication-status	Published	en_US
pubs.volume	140	en_US

Abstract:

© 2018 Elsevier Ltd In practical sound power measurements in an anechoic room, a baffle sometimes has to be used to support the sound source under test so that the anechoic room can be used as a hemi-anechoic room by laying a reflecting plane. To understand the effects of a finite size reflecting plane on measurements quantitatively, this paper investigates the effects of a disk on sound power measurements by formulating an exact solution to the problem based on the spheroidal wave functions. Three practical measurement cases are considered and the correction terms for the cases are presented based on numerical simulations. Experiments are conducted to validate the analytical solutions and numerical results.

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http://hdl.handle.net/10453/129859