Influence of absorber location in a typical dwelling layout on the attenuation of low-frequency outdoor noise

IF 3.4 2区物理与天体物理 Q1 ACOUSTICS Applied Acoustics Pub Date : 2024-11-07 DOI:10.1016/j.apacoust.2024.110352

Yang Song , Jian Kang

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Abstract

This study investigated the influence of absorber location in a typical Chinese dwelling layout consisting of one living room and two bedrooms on outdoor noise attenuation at 100–200 Hz. In-situ measurements were performed to compare the noise attenuation of the absorbers installed in different rooms, boundaries, and near-far positions towards the sound source (except for the floor). The results show that for a room with an absorber, absorption evenly distributed in the living room has considerable noise reduction for other connected rooms, but the least for itself (5 dB). With unevenly distributed absorption, the primarily attenuated position is situated in the living room or bedroom farthest from the source. For the absorbent boundary, the room whose noise reduction was most affected by the absorbent boundary (by 4 dB) remained the same as the orientation to the source changed. For the near, middle, and far absorbent positions, the middle placement in the living room tended to provide the greatest noise reduction for the entire layout (6 dB) and each room. Designing choices for a strategic absorber arrangement for precise and efficient low-frequency noise attenuation in layouts are provided.

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典型住宅布局中吸收器位置对低频室外噪声衰减的影响

本研究调查了由一个客厅和两个卧室组成的典型中国住宅布局中吸声体位置对 100-200 Hz 的室外噪声衰减的影响。通过现场测量，比较了安装在不同房间、边界和声源近远位置（地板除外）的吸声器的噪声衰减情况。结果表明，对于装有吸收器的房间，均匀分布在起居室的吸收器对其他相连房间的噪声有相当大的减弱作用，但对自身的减弱作用最小（5 dB）。如果吸收器分布不均，则主要衰减位置位于离声源最远的起居室或卧室。就吸声边界而言，受吸声边界影响最大（4 分贝）的房间，其噪声衰减量与声源方位的变化保持不变。就近、中、远三个吸声位置而言，位于起居室中间的位置往往能为整个布局和每个房间提供最大的降噪效果（6 分贝）。这为在布局中精确、有效地降低低频噪音提供了战略性吸音器布置的设计选择。

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.