[1]王 钦,颜 伟,王恩荣,等.一种估算消声室室内声压级的新方法[J].南京师范大学学报(工程技术版),2016,16(02):010.[doi:10.3969/j.issn.1672-1292.2016.02.002]
 Wang Qin,Yan Wei,Wang Enrong,et al.A Novel Method on the Sound Pressure Level EstimationApplied in Anechoic Chamber Calibration[J].Journal of Nanjing Normal University(Engineering and Technology),2016,16(02):010.[doi:10.3969/j.issn.1672-1292.2016.02.002]
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一种估算消声室室内声压级的新方法
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南京师范大学学报(工程技术版)[ISSN:1006-6977/CN:61-1281/TN]

卷:
16卷
期数:
2016年02期
页码:
010
栏目:
电气与电子工程
出版日期:
2016-06-30

文章信息/Info

Title:
A Novel Method on the Sound Pressure Level EstimationApplied in Anechoic Chamber Calibration
作者:
王 钦1颜 伟1王恩荣1李 林2吴 云2
(1.南京师范大学电气与自动化工程学院,江苏 南京 210042)(2.江苏省计量科学研究院,江苏 南京 210023)
Author(s):
Wang Qin1Yan Wei1Wang Enrong1Li Lin2Wu Yun2
(1.School of Electrical and Automation Engineering,Nanjing Normal University,Nanjing 210042,China)(2.Jiangsu Institute of Metrology,Nanjing 210023,China)
关键词:
消声室校准方法自由声场空气吸收声压级
Keywords:
anechoic chambercalibration methodfree sound fieldair absorptionsound pressure level
分类号:
TB95
DOI:
10.3969/j.issn.1672-1292.2016.02.002
文献标志码:
A
摘要:
JJF 1147消声室校准规程中反平方率声压级的推导公式存在一定缺陷,易导致推算出的自由声场偏差值出现“近大远小”的不合理现象,本文通过分析空气吸收因素对校准精度的影响,提出一种估算消声室室内理论声压级的新方法,在拟合模型中加入了空气吸收的衰减部分,采用非线性最小二乘法估计理论声压级,能够提高校准精度,为实际消声室校准工作提供理论依据.
Abstract:
The formula to derivate sound pressure level based on the inverse law has some problems for the anechoic chamber calibration in JJF 1147 specifications,which causes the sound pressure level deviation to increase with the measurement distance from sound source closing. The influence of the air absorption factors have been analyzed on anechoic chamber calibration accuracy. A novel method is proposed to estimate the sound pressure level applied in the anechoic chamber calibration,which considers the air absorption attenuation and uses the nonlinear least square method to calibrate the theoretical sound pressure level. The present method can improve the calibration accuracy effectively and also provide the theoretical basis for the practical anechoic chamber calibration.

参考文献/References:

[1] 国家质量监督检验检疫总局. 声学声压法测定噪声源声功率级消声室和半消声室精密法:GB/T 6882—2008[S]. 北京:中国标准出版社,2008.
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[2] International standards organization. Acoustics-determination of sound power levels of noise sources using sound pressure-precision methods for anechoic and hemi-anechoic rooms:ISO 3745-2012[S]. Geneva:HIS,2012.
[3] 国家质量监督检验检疫总局. 消声室和半消声室声学特性校准规范:JJF 1147-2006[S]. 北京:中国计量出版社,2006.
AQSIQ. Calibration specification for acoustic performance of anechoic rooms and hemi-anechoic rooms:JJF 1147-2006[S]. Beijing:China Metrology Publishing House,2006. (in Chinese)
[4] 杨德俊,吴杰歆,何卓斌,等. 浅谈反平方律鉴定消声室自由声场的方法研究[J]. 家电科技,2012(4):76-78.
YANG D J,WU J X,HE Z B,et al. Preliminary discussion on method to calculate the sound pressure leve based on the inverse law in anechoic room[J]. Household appliance technology,2012(4):76-78. (in Chinese)
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相似文献/References:

[1]张宇环,赵阳,刘勇,等.辐射电磁干扰噪声预估方法校准研究[J].南京师范大学学报(工程技术版),2012,12(03):023.
 Zhang Yuhuan,Zhao Yang,Liu Yong,et al.Prediction Research on Radiated Eletromagnetic Inference Noise Using Calibration Method[J].Journal of Nanjing Normal University(Engineering and Technology),2012,12(02):023.

备注/Memo

备注/Memo:
收稿日期:2016-04-26. 
基金项目:国家自然科学基金(51475246)、江苏省高校自然科学基金(15KJB470011)、江苏省普通高校专业学位研究生科研实践计划项目(SJLX15_0306). 
通讯联系人:颜伟,博士,讲师,研究方向:电气工程、电磁兼容. E-mail:61197@njnu.edu.cn
更新日期/Last Update: 2016-06-30