A modified electro-acoustical reciprocity method for measuring low-frequency sound source in arbitrary surroundings

Lu, L; Sun, H; Wu, M; Zhu, Q; Yang, J

A modified electro-acoustical reciprocity method for measuring low-frequency sound source in arbitrary surroundings

Lu, L Sun, H Wu, M Zhu, Q

Yang, J

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Publisher:: Elsevier
Publication Type:: Journal Article
Citation:: Applied Acoustics, 2017, 116, pp. 1-8
Issue Date:: 2017-01-15

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Field	Value	Language
dc.contributor.author	Lu, L
dc.contributor.author	Sun, H
dc.contributor.author	Wu, M
dc.contributor.author	Zhu, Q https://orcid.org/0000-0003-3942-0945
dc.contributor.author	Yang, J
dc.date.accessioned	2022-08-05T04:15:44Z
dc.date.available	2022-08-05T04:15:44Z
dc.date.issued	2017-01-15
dc.identifier.citation	Applied Acoustics, 2017, 116, pp. 1-8
dc.identifier.issn	0003-682X
dc.identifier.issn	1872-910X
dc.identifier.uri	http://hdl.handle.net/10453/159645
dc.description.abstract	The reciprocity principle provides a possible means of measuring the low-frequency volume velocity of a sound source in arbitrary surroundings; however, the auxiliary transducer in the reciprocity experiment is required to be absolutely reciprocal, which means that the radiation property and the receiving property of the transducer are identical. However, it is not always easy to obtain such a low-frequency reciprocal transducer, because some issues like nonlinearity would lead the transducer to be non-reciprocal. In this study, a modified method is proposed to conduct the reciprocity measurement using an ordinary loudspeaker instead of a strictly reciprocal one as the auxiliary transducer. Firstly, the relationship is established between the measurement error and the inconsistency of auxiliary loudspeaker's radiation property and receiving property. Furthermore, a modified reciprocity method is proposed to compensate the inconsistency. Finally, experiments are carried out with the modified reciprocity method in both an anechoic room and a reverberation room with two different auxiliary loudspeakers. The experimental results of the modified reciprocity method agree with the results obtained with the free field method very well.
dc.language	English
dc.publisher	Elsevier
dc.relation.ispartof	Applied Acoustics
dc.relation.isbasedon	10.1016/j.apacoust.2016.09.007
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0203 Classical Physics, 0913 Mechanical Engineering, 1201 Architecture
dc.subject.classification	Acoustics
dc.title	A modified electro-acoustical reciprocity method for measuring low-frequency sound source in arbitrary surroundings
dc.type	Journal Article
utslib.citation.volume	116
utslib.for	0203 Classical Physics
utslib.for	0913 Mechanical Engineering
utslib.for	1201 Architecture
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
utslib.copyright.status	closed_access	*
pubs.consider-herdc	false
dc.date.updated	2022-08-05T04:15:43Z
pubs.publication-status	Published
pubs.volume	116

Abstract:

The reciprocity principle provides a possible means of measuring the low-frequency volume velocity of a sound source in arbitrary surroundings; however, the auxiliary transducer in the reciprocity experiment is required to be absolutely reciprocal, which means that the radiation property and the receiving property of the transducer are identical. However, it is not always easy to obtain such a low-frequency reciprocal transducer, because some issues like nonlinearity would lead the transducer to be non-reciprocal. In this study, a modified method is proposed to conduct the reciprocity measurement using an ordinary loudspeaker instead of a strictly reciprocal one as the auxiliary transducer. Firstly, the relationship is established between the measurement error and the inconsistency of auxiliary loudspeaker's radiation property and receiving property. Furthermore, a modified reciprocity method is proposed to compensate the inconsistency. Finally, experiments are carried out with the modified reciprocity method in both an anechoic room and a reverberation room with two different auxiliary loudspeakers. The experimental results of the modified reciprocity method agree with the results obtained with the free field method very well.

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http://hdl.handle.net/10453/159645