Active control of sound through full-sized open windows
There is a pressing need to address urban sustainability challenges of increasing ambient temperatures and noise levels in densely-populated, high-rise cities. Solutions that utilise active noise control on open windows to reduce indoor noise levels seem promising, as natural ventilation is still m...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2019
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/106104 http://hdl.handle.net/10220/47925 http://dx.doi.org/10.1016/j.buildenv.2018.05.042 |
| _version_ | 1811693456676880384 |
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| author | Lam, Bhan Shi, Chuang Shi, Dongyuan Gan, Woon-Seng |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Lam, Bhan Shi, Chuang Shi, Dongyuan Gan, Woon-Seng |
| author_sort | Lam, Bhan |
| collection | NTU |
| description | There is a pressing need to address urban sustainability challenges of increasing ambient temperatures and noise
levels in densely-populated, high-rise cities. Solutions that utilise active noise control on open windows to reduce indoor noise levels seem promising, as natural ventilation is still maintained. Active noise control utilizes acoustic transducers arranged around the open window to generate a secondary incidence noise that destructively interferes with the real noise. The two most common techniques of transducer arrangement, distributed and boundary layouts, are investigated for the typical single-glazed sliding window. Finite element method is used to establish the control performance of the active noise control system and the passive attenuation provided by the sliding window. Based on the investigated fundamental limits of active control, the distributed layout has
consistently yielded better performance than the boundary layout. The distributed-layout method can also reduce noise more effectively than a fully-glazed window. Moreover, sources distributed only in the partial opening of a simulated sliding window can attenuate noise as effectively as the fully-glazed window. The distributed-layout method is tested on a full-sized window, where the active control system has up to 16 channels and evenly distributed across the window opening. In the test with tonal sounds, the feasibility of the active control system is demonstrated. The experimental results have validated the simulation findings for normal
incidence plane waves. |
| first_indexed | 2024-10-01T06:51:58Z |
| format | Journal Article |
| id | ntu-10356/106104 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:51:58Z |
| publishDate | 2019 |
| record_format | dspace |
| spelling | ntu-10356/1061042019-12-06T22:04:38Z Active control of sound through full-sized open windows Lam, Bhan Shi, Chuang Shi, Dongyuan Gan, Woon-Seng School of Electrical and Electronic Engineering Finite Element Method DRNTU::Engineering::Electrical and electronic engineering Active Noise Control There is a pressing need to address urban sustainability challenges of increasing ambient temperatures and noise levels in densely-populated, high-rise cities. Solutions that utilise active noise control on open windows to reduce indoor noise levels seem promising, as natural ventilation is still maintained. Active noise control utilizes acoustic transducers arranged around the open window to generate a secondary incidence noise that destructively interferes with the real noise. The two most common techniques of transducer arrangement, distributed and boundary layouts, are investigated for the typical single-glazed sliding window. Finite element method is used to establish the control performance of the active noise control system and the passive attenuation provided by the sliding window. Based on the investigated fundamental limits of active control, the distributed layout has consistently yielded better performance than the boundary layout. The distributed-layout method can also reduce noise more effectively than a fully-glazed window. Moreover, sources distributed only in the partial opening of a simulated sliding window can attenuate noise as effectively as the fully-glazed window. The distributed-layout method is tested on a full-sized window, where the active control system has up to 16 channels and evenly distributed across the window opening. In the test with tonal sounds, the feasibility of the active control system is demonstrated. The experimental results have validated the simulation findings for normal incidence plane waves. NRF (Natl Research Foundation, S’pore) Accepted version 2019-03-28T07:53:35Z 2019-12-06T22:04:38Z 2019-03-28T07:53:35Z 2019-12-06T22:04:38Z 2018 Journal Article Lam, B., Shi, C., Shi, D., & Gan, W.-S. (2018). Active control of sound through full-sized open windows. Building and Environment, 141, 16-27.doi:10.1016/j.buildenv.2018.05.042 0360-1323 https://hdl.handle.net/10356/106104 http://hdl.handle.net/10220/47925 http://dx.doi.org/10.1016/j.buildenv.2018.05.042 en Building and Environment © 2018 Elsevier Ltd. All rights reserved. This paper was published in Building and Environment and is made available with permission of Elsevier Ltd. 34 p. application/pdf |
| spellingShingle | Finite Element Method DRNTU::Engineering::Electrical and electronic engineering Active Noise Control Lam, Bhan Shi, Chuang Shi, Dongyuan Gan, Woon-Seng Active control of sound through full-sized open windows |
| title | Active control of sound through full-sized open windows |
| title_full | Active control of sound through full-sized open windows |
| title_fullStr | Active control of sound through full-sized open windows |
| title_full_unstemmed | Active control of sound through full-sized open windows |
| title_short | Active control of sound through full-sized open windows |
| title_sort | active control of sound through full sized open windows |
| topic | Finite Element Method DRNTU::Engineering::Electrical and electronic engineering Active Noise Control |
| url | https://hdl.handle.net/10356/106104 http://hdl.handle.net/10220/47925 http://dx.doi.org/10.1016/j.buildenv.2018.05.042 |
| work_keys_str_mv | AT lambhan activecontrolofsoundthroughfullsizedopenwindows AT shichuang activecontrolofsoundthroughfullsizedopenwindows AT shidongyuan activecontrolofsoundthroughfullsizedopenwindows AT ganwoonseng activecontrolofsoundthroughfullsizedopenwindows |