Acoustic metaslit for regional sound insulation for a three-dimensional diffuse sound field incidence

IF 3.4 2区物理与天体物理 Q1 ACOUSTICS

Applied Acoustics Pub Date : 2024-09-27 DOI:10.1016/j.apacoust.2024.110297

Hiromitsu Emoto , Takayuki Yamada

引用次数: 0

Abstract

An acoustic metaslit model designed for regional sound insulation, employing waveguide modes and the directivity of openings, is introduced. This model characterizes the frequency responses of numerical simulations. The performance of metaslits, made from steel plates, is experimentally validated under diffuse sound field conditions and assessed by measuring acoustic power differences using intensity probes. The frequency response of single and multiple-unit metaslits shows peaks at multiples of the target frequencies. Additionally, experimental results demonstrate that the three-dimensional structure does not influence the two-dimensional regional sound insulation phenomenon. Furthermore, comparisons between experimental and numerical results indicate that obstacles near the outlets of metaslits can impact their performance.

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用于三维漫射声场入射区域隔声的声学元光斑

介绍了一种针对区域隔声设计的声学元模型，该模型采用了波导模式和开口的指向性。该模型描述了数值模拟的频率响应。在扩散声场条件下，通过使用声强探头测量声功率差，对钢板制成的元室的性能进行了实验验证和评估。单个和多个单元元发光体的频率响应在目标频率的倍数处显示出峰值。此外，实验结果表明，三维结构不会影响二维区域隔声现象。此外，实验结果与数值结果的比较表明，元室出口附近的障碍物会影响元室的性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Acoustics 物理-声学

CiteScore

7.40

自引率

11.80%

发文量

618

审稿时长

7.5 months

期刊介绍： Since its launch in 1968, Applied Acoustics has been publishing high quality research papers providing state-of-the-art coverage of research findings for engineers and scientists involved in applications of acoustics in the widest sense. Applied Acoustics looks not only at recent developments in the understanding of acoustics but also at ways of exploiting that understanding. The Journal aims to encourage the exchange of practical experience through publication and in so doing creates a fund of technological information that can be used for solving related problems. The presentation of information in graphical or tabular form is especially encouraged. If a report of a mathematical development is a necessary part of a paper it is important to ensure that it is there only as an integral part of a practical solution to a problem and is supported by data. Applied Acoustics encourages the exchange of practical experience in the following ways: • Complete Papers • Short Technical Notes • Review Articles; and thereby provides a wealth of technological information that can be used to solve related problems. Manuscripts that address all fields of applications of acoustics ranging from medicine and NDT to the environment and buildings are welcome.