声功率标准装置介绍及其应用

南京大学学报(自然科学版) ›› 2012, Vol. 48 ›› Issue (5): 661–665.

声功率标准装置介绍及其应用

牛锋1，何龙标1，许欢1，白澄1，钟波1，杨平1，郑爱建2

出版日期:2015-07-08 发布日期:2015-07-08
作者简介: (1.中国计量科学研究院力学声学所，北京，100013;
2.北京化工大学信息科学与技术学院，北京，100029)

Application of the standard equipment for sound power measurement*

Niu Feng^1**，He Long Biuo¹ ，Xu Huan¹，Bui Ying¹，Zhong Bo¹,Yung Ping¹，Zheng Ai一Jian ²

Online:2015-07-08 Published:2015-07-08
About author: (1 .Division of Mechanics and Acoustics, National Institute of Metrology, Beijing, 100013，China
2. Department of Information Science and Technology, Beijing University of
Chemical Technology, Beijing, 100029，China)

摘要/Abstract

摘要： 在半消声室中分别建立了基于20个传声器位置的固定点法声功率标准装置和基于同轴圆路径的声功率标准装置，并且比较了两种测试声功率的方法.通过20点法声压级的同时采集，可以测试得到声功率源的瞬态声功率结果，能够得到关于噪声源的更详细的信息和声学特性.声功率标准装置的频率范围从50到20 kHz，并且
在所有频段上测得的声功率级结果的不确定不超过1.8dB.最后应用声功率标准装置，测试了不同厂家4款剃须刀向外辐射的声功率结果.

Abstract: The standard equipment for sound power measurement based on the 20 microphone positions and the coaxial circular paths are completed in hemi-anechoic room.The two methods for sound power measurement are compared.The sound pressure level of 20 microphone positions can be measured at the
Sanle time, and the instantaneous sound power can be obtained. More information and characteristic of the noese source can be analyzed.The frequency rank of the standard equipment is from 50 to 20 kHz, and the uncertainty is within 1.8 dB at all frequency bands.The sound power levels of different shavers are measured.

牛锋1，何龙标1，许欢1，白澄1，钟波1，杨平1，郑爱建2
. 声功率标准装置介绍及其应用[J]. 南京大学学报(自然科学版), 2012, 48(5): 661–665.

Niu Feng^1**，He Long Biuo¹ ，Xu Huan¹，Bui Ying¹，Zhong Bo¹,Yung Ping¹，Zheng Ai一Jian ²
. Application of the standard equipment for sound power measurement*
[J]. Journal of Nanjing University(Natural Sciences), 2012, 48(5): 661–665.

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