Sound Absorption Coefficients of Micro-fiber Fabrics by Reverberation Room Method
Sound Absorption Coefficients of Micro-fiber Fabrics by Reverberation Room Method
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DOI：
10.1177/0040517507078743
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发表时间：
2007-05
影响因子：
2.3
通讯作者：
Y. Na;J. Lancaster;J. Casali;G. Cho
中科院分区：
文献类型：
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作者：
Y. Na;J. Lancaster;J. Casali;G. Cho
材料的吸声性能不仅对降噪很重要，而且对控制室内语音清晰度的混响时间和促进音乐厅的声音更饱满也很重要。工业纺织品关注的是这些材料在吸声方面的应用，因此要对新纺织品的吸声性能进行研究。微纤维织物具有细纤维和高表面积，它已被用于雨刷、隔热材料、过滤器或透气层等应用。它也可以用于吸声。本文探讨了利用微纤维织物作为吸声材料的可能性。采用混响室法测试了5种微纤维织物和1种普通纤维织物的吸声系数。结果表明，在相同厚度或重量下，超细纤维织物的吸声性能优于传统织物，并且超细纤维织物的结构对根据声音频率控制吸声具有重要作用。织物密度对吸声的影响大于织物厚度和重量，织物密度约为0.14 g/cm3时，降噪系数达到最大值，之后逐渐减小。
The sound absorption properties of materials are important not only for noise reduction, but also for controlling reverberation time for speech intelligibility in rooms and for promoting fuller sound in concert halls. Industrial textiles are focusing on these materials' application for sound absorption, thus new textiles were to be examined in relation to this performance. Micro-fiber fabric has fine fibers and a high surface area and it has been used in such applications as wipers, thermal insulator, filters or breathable layers. It can be also used for sound absorption. This paper examines the possibility of using micro-fiber fabrics as sound absorbent materials. We tested the sound absorption coefficients of five micro-fiber fabrics and one regular fiber fabric by the reverberation room method. The results showed that the micro-fiber fabrics' sound absorption is superior to that of conventional fabric with the same thickness or weight, and the micro-fiber fabrics' structure was found to be important for controlling sound absorption according to sound frequency. Fabric density was found to have more effect than fabric thickness or weight on sound absorption, and the Noise Reduction Coefficient increases to its highest value at a fabric density of about 0.14 g/cm3, and it decreases thereafter.