Ventilated acoustic metasurface with low-frequency sound insulation.
| Autor: | Zhang Y; School of Aeronautics and Astronautics, Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China., Chin YW; Department of Mechanical Engineering, National University of Singapore, Singapore 117411, Singapore., Yu X; Department of Mechanical Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong Special Administrative Region., Shrestha M; Department of Mechanical Engineering, National University of Singapore, Singapore 117411, Singapore., Lau GK; Department of Mechanical Engineering, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwanzhangyx289@mail2.sysu.edu.cn, yaowei_chin@nus.edu.sg, lucien.yu@polyu.edu.hk, MILAN001@e.ntu.edu.sg, mgklau@ncyu.edu.tw, mpekbc@nus.edu.sg, liukun6@mail.sysu.edu.cn, luzhb7@mail.sysu.edu.cn., Koo BC; Department of Mechanical Engineering, National University of Singapore, Singapore 117411, Singapore., Liu K; School of Aeronautics and Astronautics, Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China., Lu Z; School of Aeronautics and Astronautics, Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China. |
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| Jazyk: | angličtina |
| Zdroj: | JASA express letters [JASA Express Lett] 2023 Jul 01; Vol. 3 (7). |
| DOI: | 10.1121/10.0020133 |
| Abstrakt: | A ventilated acoustic metasurface consisting of a membrane covered with a combination of different depth sub-chambers is proposed. It can achieve at least a 5 dB sound insulation acoustic performance in the wide frequency range from 100 to 1700 Hz, in particular a 10 dB noise reduction in the range from 100 to 200 Hz and from 437.4 to 1700 Hz, which can therefore cover the low-frequency range of the environmental noise. The physical mechanism of membrane-acoustic coupling for noise reduction in the low-frequency range is further explored. (© 2023 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).) |
| Databáze: | MEDLINE |
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