Insertion loss of a thin partition for audio sounds generated by a parametric array loudspeaker.

Zhong, J; Wang, S; Kirby, R; Qiu, X

Insertion loss of a thin partition for audio sounds generated by a parametric array loudspeaker.

Zhong, J

Wang, S

Kirby, R

Qiu, X

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Publisher:: ACOUSTICAL SOC AMER AMER INST PHYSICS
Publication Type:: Journal Article
Citation:: The Journal of the Acoustical Society of America, 2020, 148, (1), pp. 226
Issue Date:: 2020-07

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Field	Value	Language
dc.contributor.author	Zhong, J https://orcid.org/0000-0002-9972-8004
dc.contributor.author	Wang, S https://orcid.org/0000-0002-0392-0246
dc.contributor.author	Kirby, R https://orcid.org/0000-0002-3520-1377
dc.contributor.author	Qiu, X https://orcid.org/0000-0002-5181-1220
dc.date.accessioned	2021-04-28T06:03:13Z
dc.date.available	2021-04-28T06:03:13Z
dc.date.issued	2020-07
dc.identifier.citation	The Journal of the Acoustical Society of America, 2020, 148, (1), pp. 226
dc.identifier.issn	0001-4966
dc.identifier.issn	1520-8524
dc.identifier.uri	http://hdl.handle.net/10453/148462
dc.description.abstract	Unlike the audio sound generated by traditional sources, the directivity of that generated by a parametric array loudspeaker (pal) deteriorates significantly after passing through a thin partition. To study this phenomenon, the pal radiation model based on the Westervelt equation, and the plane wave expansion method are used to calculate the sound fields behind a sheet of aluminum foil and a porous material blanket under the quasi-linear assumption, where the paraxial approximation is assumed only for ultrasonic waves. The audio sounds generated by a point monopole and a traditional directional source are presented for comparison. Both simulation and experiment results show that the transmitted sound from a pal behind the thin partition is small and less focused on the radiation axis because most of the ultrasounds forming the directivity of the pal is blocked by the thin partition which has little effect on the traditional audio sources.
dc.format	Print
dc.language	eng
dc.publisher	ACOUSTICAL SOC AMER AMER INST PHYSICS
dc.relation	http://purl.org/au-research/grants/arc/LP160100616
dc.relation.ispartof	The Journal of the Acoustical Society of America
dc.relation.isbasedon	10.1121/10.0001568
dc.rights	info:eu-repo/semantics/restrictedAccess
dc.subject.classification	Acoustics
dc.title	Insertion loss of a thin partition for audio sounds generated by a parametric array loudspeaker.
dc.type	Journal Article
utslib.citation.volume	148
utslib.location.activity	United States
utslib.for	0913 Mechanical Engineering
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	in_progress	*
dc.date.updated	2021-04-28T06:03:08Z
pubs.issue	1
pubs.publication-status	Published
pubs.volume	148
utslib.citation.issue	1

Abstract:

Unlike the audio sound generated by traditional sources, the directivity of that generated by a parametric array loudspeaker (pal) deteriorates significantly after passing through a thin partition. To study this phenomenon, the pal radiation model based on the Westervelt equation, and the plane wave expansion method are used to calculate the sound fields behind a sheet of aluminum foil and a porous material blanket under the quasi-linear assumption, where the paraxial approximation is assumed only for ultrasonic waves. The audio sounds generated by a point monopole and a traditional directional source are presented for comparison. Both simulation and experiment results show that the transmitted sound from a pal behind the thin partition is small and less focused on the radiation axis because most of the ultrasounds forming the directivity of the pal is blocked by the thin partition which has little effect on the traditional audio sources.

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http://hdl.handle.net/10453/148462