Acoustical barrier for tonal noises

R.S. Ming

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Acoustical barrier for tonal noises

机译：音调噪音的声屏障

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In this paper, a novel acoustical barrier based on the principle of the Helmholtz resonator is proposed for the mitigation of tonal noises and its in situ performance has been assessed in comparison with a reflecting barrier and an absorbent barrier. For a lightly damped thin-walled reflecting barrier, the energy transmitted through the barrier structure is comparable with that diffracted over the edges. The absorption treatment not only absorbs acoustical energy but also damps the barrier structure resulting in a negligible energy transmission. The results demonstrated that for tonal noises the proposed barrier is more effective than reflecting and absorbent barriers.

机译：本文提出了一种基于亥姆霍兹共振器原理的新型声屏障，用于缓解音调噪声，并与反射屏障和吸收屏障进行了比较，评估了其原位性能。对于轻度衰减的薄壁反射屏障，通过屏障结构传输的能量与在边缘上扩散的能量相当。吸收处理不仅吸收了声能，而且还削弱了势垒结构，导致能量传递可忽略不计。结果表明，对于音调噪声，拟议的屏障比反射和吸收屏障更有效。

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来源
《Applied Acoustics》 |2005年第9期|p.1074-1087|共14页
作者
R.S. Ming;
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作者单位

SVT Engineering Consultants, 433 Vincent Street West, Leederville, WA 6007, Australia;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类声学;
关键词
tonal noise; acoustic barrier; sound absorption; insertion loss;

机译：音调噪声;声屏障;吸声;插入损耗;

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Acoustical barrier for tonal noises

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