Experimental Investigation on the Sound Reduction Performance of Frequency Controlled Acoustic Interference Cavities

5.00
Hdl Handle:
http://hdl.handle.net/2436/620440
Title:
Experimental Investigation on the Sound Reduction Performance of Frequency Controlled Acoustic Interference Cavities
Authors:
Arjunan, Arun ( 0000-0001-5493-0957 ) ; Stanford, Mark; Rackley, Jonathan
Abstract:
The European directives on noise reduction associated with rail, road and aviation clearly depicts the need for high efficiency sound attenuating structures for targeted noise reduction. Consequently, this paper presents key observations from Phase 1 of the UK Department of Transport (DfT) funded research project to investigate the targeted creation of acoustic interference to develop high-efficiency noise abatement structures. Geometrical cavity inspired from existing theories around Herschel-Quincke concept is experimentally investigated for the creation of frequency dependent acoustic interference. The interference cavity within a global structure was digitally conceived and prototyped using the Selective Laser Sintering (SLS) process in a Nylon 12 material. A modified impedance tube method was then used to measure the frequency dependent Sound Reduction Index (R) for a frequency range of 250 to 1600 Hz. The results showed that depending on the frequency of interest acoustic interference can be recreated by controlling the cavity length. In addition R values of 72.47 dB were observed at 900 Hz confirming the potential of the technology for high efficiency noise barriers. The observation presented in this paper establishes a new viewpoint for the use of acoustic interference for targeted noise abatement.
Publisher:
German Acoustical Society (DEGA)
Journal:
INTER-NOISE 2016 (ISSN 0105-175x)
Issue Date:
Aug-2016
URI:
http://hdl.handle.net/2436/620440
Additional Links:
http://www.internoise2016.org/
Type:
Meetings and Proceedings
Language:
en
ISSN:
0105-175x
ISBN:
9783939296119
Sponsors:
UK Department of Transport (Transport-Technology, Research and Innovation Grant)
Appears in Collections:
Engineering and Technology

Full metadata record

DC FieldValue Language
dc.contributor.authorArjunan, Arunen
dc.contributor.authorStanford, Marken
dc.contributor.authorRackley, Jonathanen
dc.date.accessioned2017-04-05T14:19:53Z-
dc.date.available2017-04-05T14:19:53Z-
dc.date.issued2016-08-
dc.identifier.isbn9783939296119-
dc.identifier.issn0105-175xen
dc.identifier.urihttp://hdl.handle.net/2436/620440-
dc.description.abstractThe European directives on noise reduction associated with rail, road and aviation clearly depicts the need for high efficiency sound attenuating structures for targeted noise reduction. Consequently, this paper presents key observations from Phase 1 of the UK Department of Transport (DfT) funded research project to investigate the targeted creation of acoustic interference to develop high-efficiency noise abatement structures. Geometrical cavity inspired from existing theories around Herschel-Quincke concept is experimentally investigated for the creation of frequency dependent acoustic interference. The interference cavity within a global structure was digitally conceived and prototyped using the Selective Laser Sintering (SLS) process in a Nylon 12 material. A modified impedance tube method was then used to measure the frequency dependent Sound Reduction Index (R) for a frequency range of 250 to 1600 Hz. The results showed that depending on the frequency of interest acoustic interference can be recreated by controlling the cavity length. In addition R values of 72.47 dB were observed at 900 Hz confirming the potential of the technology for high efficiency noise barriers. The observation presented in this paper establishes a new viewpoint for the use of acoustic interference for targeted noise abatement.en
dc.description.sponsorshipUK Department of Transport (Transport-Technology, Research and Innovation Grant)en
dc.language.isoenen
dc.publisherGerman Acoustical Society (DEGA)en
dc.relation.urlhttp://www.internoise2016.org/en
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectSounden
dc.subjectInsulationen
dc.subjectInterferenceen
dc.subjectTransmission Lossen
dc.titleExperimental Investigation on the Sound Reduction Performance of Frequency Controlled Acoustic Interference Cavitiesen
dc.typeMeetings and Proceedingsen
dc.identifier.journalINTER-NOISE 2016 (ISSN 0105-175x)en
dc.date.accepted2016-04-
rioxxterms.funderUK Department of Transport (Transport-Technology, Research and Innovation Grant)en
rioxxterms.identifier.project150902 T-TRIG 2015en
rioxxterms.versionVoRen
rioxxterms.licenseref.urihttps://creativecommons.org/CC BY-NC-ND 4.0en
rioxxterms.licenseref.startdate2017-04-05en
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