Experimental validation of determining sound power using acoustic radiation modes and a laser vibrometer
Experimental validation of determining sound power using acoustic radiation modes and a laser vibrometer
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DOI：
10.1016/j.apacoust.2020.107254
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发表时间：
2020-07-01
影响因子：
3.4
通讯作者：
Sommerfeldt, Scott D.
中科院分区：
文献类型：
--
作者：
Jones, Cameron B.;Goates, Caleb B.;Sommerfeldt, Scott D.
利用声辐射模态计算声功率的理论发展是有据可查的。然而，实验验证和与其他声功率测量标准在较宽的频率范围内的比较还没有提出。本文比较了实验结果从声辐射模态为基础的声功率测量方法，使用ISO 3741在两种情况下获得的结果。首先，对单个简支折流板的声功率测量结果进行了比较。然后，两个简支挡板的声功率测量的比较。两种方法的单个面板之间的结果显示200 Hz和4 kHz之间的最大三分之一倍频程带差为2.2 dB，总差为1.7 dB。对于双面板系统，最大三分之一倍频程带差为1.6 dB，总差为0.7 dB。它还表明，在两个面板的情况下，从每个面板的声功率可以单独测量使用声辐射模式的方法和求和，以获得使用ISO 3741测量的总声功率。(C)2020爱思唯尔有限公司保留所有权利。
The theoretical development for computing sound power using acoustic radiation modes is well documented. However, an experimental validation and comparison with other sound power measurement standards over a wide frequency range has not been presented. This paper compares experimental results from an acoustic-radiation-modes-based sound power measurement method to results obtained using ISO 3741 in two scenarios. First, sound power measurement results from a single simply-supported baffled panel are compared. A comparison of sound power measurements of two simply-supported baffled panels is then presented. Results between the two methods for the single panel show a maximum one-third octave band difference of 2.2 dB between 200 Hz and 4 kHz with an overall difference of 1.7 dB. For the two-panel system, the maximum one-third octave band difference is 1.6 dB with an overall difference of 0.7 dB. It is also shown that in the two-panel case, the sound power from each panel can be measured individually using the acoustic radiation modes approach and summed to obtain the overall sound power as measured using ISO 3741. (C) 2020 Elsevier Ltd. All rights reserved.