Secondary source and error sensing strategies for the active control of sound transmission through a small opening

Zhang, C; Qin, M; Zou, H; Qiu, X

Secondary source and error sensing strategies for the active control of sound transmission through a small opening

Zhang, C Qin, M Zou, H Qiu, X

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Publication Type:: Journal Article
Citation:: Journal of Sound and Vibration, 2020, 464
Issue Date:: 2020-01-06

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Field	Value	Language
dc.contributor.author	Zhang, C	en_US
dc.contributor.author	Qin, M	en_US
dc.contributor.author	Zou, H	en_US
dc.contributor.author	Qiu, X https://orcid.org/0000-0002-5181-1220	en_US
dc.date.available	2020-09-21T19:06:39Z
dc.date.issued	2020-01-06	en_US
dc.identifier.citation	Journal of Sound and Vibration, 2020, 464	en_US
dc.identifier.issn	0022-460X	en_US
dc.identifier.uri	http://hdl.handle.net/10453/137388
dc.description.abstract	© 2019 Elsevier Ltd The openings of an enclosure allow natural ventilation and light ingress but also act as a point of entry for noise of the whole structure. In this paper, the active control of the sound transmitted through a small opening in a wall formed by two infinitely-large baffles is investigated up to 4 kHz. Based on an analytical model developed with the modal expansion method, the effects of different secondary source and error sensor strategies are compared numerically for different types of primary sound fields. The upper frequency limit of effective control is found to be determined by the eigen-frequency of the acoustic modes of the opening. Experimental results with an opening of 6 cm by 6 cm on a 31.8 cm thick wall agree well with the numerical results. The upper frequency limit of effective control is found to be 2750 Hz for a single-channel system and 3900 Hz for a 4-channel system with more than 10 dB noise reduction. It is concluded that implementing active control in small openings with an appropriate secondary source and error sensing strategy can extend the frequency range of control significantly, so that the active control systems can be applied to more noise control scenarios which have both noise reduction and ventilation requirements in the middle to high frequency range.	en_US
dc.relation	http://purl.org/au-research/grants/arc/ARC LP140100987
dc.relation	http://purl.org/au-research/grants/arc/LP140100740
dc.relation.ispartof	Journal of Sound and Vibration	en_US
dc.relation.isbasedon	10.1016/j.jsv.2019.114973	en_US
dc.rights	info:eu-repo/semantics/openAccess
dc.subject.classification	Acoustics	en_US
dc.title	Secondary source and error sensing strategies for the active control of sound transmission through a small opening	en_US
dc.type	Journal Article
utslib.citation.volume	464	en_US
utslib.for	02 Physical Sciences	en_US
utslib.for	09 Engineering	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
utslib.copyright.status	open_access	*
pubs.publication-status	Published	en_US
pubs.volume	464	en_US

Abstract:

© 2019 Elsevier Ltd The openings of an enclosure allow natural ventilation and light ingress but also act as a point of entry for noise of the whole structure. In this paper, the active control of the sound transmitted through a small opening in a wall formed by two infinitely-large baffles is investigated up to 4 kHz. Based on an analytical model developed with the modal expansion method, the effects of different secondary source and error sensor strategies are compared numerically for different types of primary sound fields. The upper frequency limit of effective control is found to be determined by the eigen-frequency of the acoustic modes of the opening. Experimental results with an opening of 6 cm by 6 cm on a 31.8 cm thick wall agree well with the numerical results. The upper frequency limit of effective control is found to be 2750 Hz for a single-channel system and 3900 Hz for a 4-channel system with more than 10 dB noise reduction. It is concluded that implementing active control in small openings with an appropriate secondary source and error sensing strategy can extend the frequency range of control significantly, so that the active control systems can be applied to more noise control scenarios which have both noise reduction and ventilation requirements in the middle to high frequency range.

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http://hdl.handle.net/10453/137388