Ultra-broadband active noise cancellation at the ears via optical microphones

Xiao, T; Qiu, X; Halkon, B

Ultra-broadband active noise cancellation at the ears via optical microphones

Xiao, T

Qiu, X

Halkon, B

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Publisher:: Nature Publishing Group
Publication Type:: Journal Article
Citation:: Scientific Reports, 2020
Issue Date:: 2020-01-01

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Field	Value	Language
dc.contributor.author	Xiao, T https://orcid.org/0000-0003-2211-7827	en_US
dc.contributor.author	Qiu, X https://orcid.org/0000-0002-5181-1220	en_US
dc.contributor.author	Halkon, B https://orcid.org/0000-0001-5459-2329	en_US
dc.date.issued	2020-01-01	en_US
dc.identifier.citation	Scientific Reports, 2020	en_US
dc.identifier.issn	2045-2322	en_US
dc.identifier.uri	http://hdl.handle.net/10453/137389
dc.description.abstract	High frequency noise has generally been difficult to be cancelled actively at a person's ears, particularly for active headrest systems aiming to free the listener from noise cancellation headphones. One of the main challenges is to measure the noise precisely at the ears. Here we demonstrate a new error sensing methodology with an optical microphone arrangement for active noise cancellation (ANC). It can measure the noise accurately for ANC without any obstructions at the listener's ears. The demonstrated system, or virtual ANC headphone as we call it, is shown to provide more than 10 dB attenuation for ultra-broadband noise - up to 6000 Hz - inside the ears in a complex sound field. The bandwidth of the controllable noise significantly exceeds the results from the state-of-the-art system, which is below 1000 Hz. The proposed method leads to the next generation of personal hearing protection system and can open up a whole new area of sound control research.	en_US
dc.publisher	Nature Publishing Group	en_US
dc.relation	http://purl.org/au-research/grants/arc/LP140100740
dc.relation.ispartof	Scientific Reports	en_US
dc.rights	info:eu-repo/semantics/openAccess
dc.title	Ultra-broadband active noise cancellation at the ears via optical microphones	en_US
dc.type	Journal Article
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.consider-herdc	true	en_US
pubs.publication-status	Submitted	en_US

Abstract:

High frequency noise has generally been difficult to be cancelled actively at a person's ears, particularly for active headrest systems aiming to free the listener from noise cancellation headphones. One of the main challenges is to measure the noise precisely at the ears. Here we demonstrate a new error sensing methodology with an optical microphone arrangement for active noise cancellation (ANC). It can measure the noise accurately for ANC without any obstructions at the listener's ears. The demonstrated system, or virtual ANC headphone as we call it, is shown to provide more than 10 dB attenuation for ultra-broadband noise - up to 6000 Hz - inside the ears in a complex sound field. The bandwidth of the controllable noise significantly exceeds the results from the state-of-the-art system, which is below 1000 Hz. The proposed method leads to the next generation of personal hearing protection system and can open up a whole new area of sound control research.

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http://hdl.handle.net/10453/137389