三维声强阵列测试精度的对比及数值分析

doi:10.3969/j.issn.1000-565X.2015.10.011

华南理工大学学报（自然科学版） ›› 2015, Vol. 43 ›› Issue (10): 74-79,88.doi: 10.3969/j.issn.1000-565X.2015.10.011

三维声强阵列测试精度的对比及数值分析

王红卫^1，2 张龙¹

1．华南理工大学建筑学院，广东广州 510640; 2．华南理工大学亚热带建筑科学国家重点实验室，广东广州 510640

收稿日期:2015-01-13 修回日期:2015-04-07 出版日期:2015-10-25 发布日期:2015-09-06
通信作者: 王红卫( 1975-) ，男，博士，副教授，主要从事建筑和环境声学研究 E-mail:wanghw@scut.edu.cn
作者简介:王红卫( 1975-) ，男，博士，副教授，主要从事建筑和环境声学研究
基金资助:
国家自然科学基金资助项目( 51278198) ; 国家留学基金资助项目( 201308440043) ; 华南理工大学中央高校基本科研业务费专项资金资助项目( 2014zz0021)

Comparison and Numerical Analysis of Measurement Accuracy of Two Three-Dimensional Sound Intensity Arrays

Wang Hong-wei^1，2 Zhang Long¹

1． School of Architecture，South China University of Technology，Guangzhou 510640，Guangdong，China; 2． State Key Laboratory of Subtropical Building Science，South China University of Technology，Guangzhou 510640，Guangdong，China

Received:2015-01-13 Revised:2015-04-07 Online:2015-10-25 Published:2015-09-06
Contact: 王红卫( 1975-) ，男，博士，副教授，主要从事建筑和环境声学研究 E-mail:wanghw@scut.edu.cn
About author:王红卫( 1975-) ，男，博士，副教授，主要从事建筑和环境声学研究
Supported by:
Supported by the National Natural Sciene Foundation of China( 51278198) and the National Study Fund of China ( 201308440043)

摘要/Abstract

摘要： 针对四面体及六传声器布置形式的声强阵列测试精度进行数值计算，比较了两种阵列的幅值测量误差及方向判断误差，并通过消声室的测试分析验证数值计算结果．研究结果表明: 随着频率的升高，声强测量的幅值误差也相应增加; 声强阵列的半径小于 0． 012 7 m 时，频率为 6 kHz 时两者测量幅值误差均超过 2 dB．在方向性误差判断方面，四传声器比六传声器存在较大的优势．在 kd( 波数与传声器声强阵列半径的积) 小于 1． 6 时，四传声器声强阵列的方向误差判别小于 1°．四传声器声强阵列降低了声强测量的硬件系统要求，但在中频阶段完全可以用于相关的建筑声学测试．

关键词: 三维声强, 数值计算, 方向判定, 测试精度

Abstract: In this paper，the measurement accuracies of the sound intensity arrays of the tetrahedral and six-microphone arrangements are numerically predicted，and the measured amplitude and angle biases of the two arrays are compared． Then，the numerical results are verified by a test in an anechoic room． The results show that ( 1) the measured amplitude errors of the two arrays increase with the frequency，and they are both greater than 2 dB when the frequency is 6 kHz and the sound intensity array radius is less than 0. 012 7 m; ( 2) the tetrahedron is significantly superior to the six microphone in terms of the angle bias，and the angle bias of the tetrahedron is less than 1° when kd ( the product of the wave number and the sound intensity array radius) is less than 1. 6; and ( 3) the tetrahedral sound intensity array reduces the requirement for the hardware system of the sound intensity measurement and can be used in relevant architecture acoustical measurements at the intermediate frequency stage．

Key words: three-dimensional sound intensity, numerical calculation, direction judgment, measurement accuracy

王红卫张龙. 三维声强阵列测试精度的对比及数值分析[J]. 华南理工大学学报（自然科学版）, 2015, 43(10): 74-79,88.

Wang Hong-wei Zhang Long. Comparison and Numerical Analysis of Measurement Accuracy of Two Three-Dimensional Sound Intensity Arrays[J]. Journal of South China University of Technology (Natural Science Edition), 2015, 43(10): 74-79,88.

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三维声强阵列测试精度的对比及数值分析

Comparison and Numerical Analysis of Measurement Accuracy of Two Three-Dimensional Sound Intensity Arrays

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