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dc.contributor.authorLam, Bhanen_US
dc.contributor.authorShi, Dongyuanen_US
dc.contributor.authorBelyi, Valiantsinen_US
dc.contributor.authorWen, Shulinen_US
dc.contributor.authorGan, Woon-Sengen_US
dc.contributor.authorLi, Kelvinen_US
dc.contributor.authorLee, Ireneen_US
dc.identifier.citationLam, B., Shi, D., Belyi, V., Wen, S., Gan, W.-S., Li, K., & Lee, I. (2020). Active control of low-frequency noise through a single top-hung window in a full-sized room. Applied Sciences, 10(19), 6817-. doi:10.3390/app10196817en_US
dc.description.abstractThe push for greater urban sustainability has increased the urgency of the search for noise mitigation solutions that allow for natural ventilation into buildings. Although a viable active noise control (ANC) solution with up to 10 dB of global attenuation between 100 Hz and 1000 Hz was previously developed for an open window, it had limited low-frequency performance below 300 Hz, owing to the small loudspeakers used. To improve the low-frequency attenuation, four passive radiator-based speakers were affixed around the opening of a top-hung ventilation window. The active control performance between 100 Hz and 700 Hz on a single top-hung window in a full-sized mock-up apartment room was examined. Active attenuation came close to the performance of the passive insulation provided by fully closing the window for expressway traffic and motorbike passing noise types. For a jet aircraft flyby, the performance of active attenuation with the window fully opened was similar to that of passive insulation with fully closed windows. In the case of low-frequency compressor noise, active attenuation's performance was significantly better than the passive insulation. Overall, between 8 dB and 12 dB of active attenuation was achieved directly in front of the window opening, and up to 10.5 dB of attenuation was achieved across the entire room.en_US
dc.description.sponsorshipMinistry of National Development (MND)en_US
dc.description.sponsorshipNational Research Foundation (NRF)en_US
dc.relation.ispartofApplied Sciencesen_US
dc.rights© 2020 The Author(s). Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution(CC BY) license (
dc.subjectEngineering::Electrical and electronic engineeringen_US
dc.titleActive control of low-frequency noise through a single top-hung window in a full-sized roomen_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Electrical and Electronic Engineeringen_US
dc.description.versionPublished versionen_US
dc.subject.keywordsActive Noise Controlen_US
dc.subject.keywordsNatural Ventilationen_US
dc.description.acknowledgementThis research is supported by the Singapore Ministry of National Development and the National Research Foundation, Prime Minister’s Office under the Cities of Tomorrow (CoT) Research Programme (CoT Award No.COT-V4-2019-1). Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not reflect the views of the Singapore Ministry of National Development and National Research Foundation, Prime Minister’s Office, Singapore.en_US
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