Ventilated acoustic metasurface with low-frequency sound insulation

Yingxin Zhang, Yao Wei Chin, Xiang Yu, Milan Shrestha, Gih Keong Lau, Boo Cheong Koo, Kun Liu, Zhenbo Lu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

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.

Original languageEnglish
Article number073602
JournalJASA Express Letters
Volume3
Issue number7
DOIs
StatePublished - 1 Jul 2023

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