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首页> 《中国测试》期刊 >本期导读>声源定位系统校准研究与不确定度分析

声源定位系统校准研究与不确定度分析

3196    2016-09-18

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作者:陈杭升1,2, 姚磊2, 王斌锐1, 孙旭朋1,2, 俞醒言2, 桑帅军2

作者单位:1. 中国计量大学, 浙江 杭州 310018;
2. 浙江省计量科学研究院, 浙江 杭州 310018


关键词:波束形成原理;声源定位;横向空间分辨力;校准装置;不确定度


摘要:

针对波束形成原理声源定位系统,介绍其功能、工作原理及校准研究现状,同时结合国内外各生产厂商对空间分辨力的经验公式及影响因素,提出横向空间分辨力的定义并将其确定为关键校准参数之一。在校准方法研究中,阐述选择非相干纯音差频信号作为测试信号的原因及频差选取的原则,计算出不同差频对横向空间分辨力相对误差的影响;研究确定声源定位成像图形上显示动态范围为3 dB。此外构建计量校准装置,包括标准声源系统(双声源)、信号发生系统、信号采集分析系统、传动及控制系统等。最后提出横向空间分辨力校准方法,并进行实验研究及测量不确定度评定分析。研究结果为国内外声源定位系统横向空间分辨力的校准提供技术和方法基础。


Calibration of sound source localization system and uncertainty analysis

CHEN Hangsheng1,2, YAO Lei2, WANG Binrui1, SUN Xupeng1,2, YU Xingyan2, SANG Shuaijun2

1. China Jiliang University, Hangzhou 310018, China;
2. Zhejiang Province Institute of Metrology, Hangzhou 310018, China

Abstract: The passage introduces the function, principle and research in calibrating sound source localization system using beamforming method. Combined with the spatial resolution experienced formulas and influencing factors provided by domestic and foreign manufacturers, we put forward the definition of transverse space resolution and make it as one of the key calibration parameters. In the study of calibration procedure, we explain the reason for choosing incoherent pure tone signal which is in difference frequency as the test signal and principles in frequency gap selection, calculated the influence of different frequency gap in the relative error of transverse spatial resolution; the dynamic range of 3 dB is confirmed on imaging graphic of sound source localization system. In addition, the calibration device is presented, which includes standard source system (double sound source), signal generation system, signal collection and analysis system, drive and control system, etc. And then, the transverse space resolution calibration method is put forward, relevant experiment and the analysis of uncertainty evaluation follows. This research results offers a good technical basis and method for domestic and foreign to the calibration of transverse space resolution to sound localization system.

Keywords: beamforming method;sound source location;spatial resolution;calibration device;uncertainty

2016, 42(8): 17-22  收稿日期: 2015-9-20;收到修改稿日期: 2015-11-21

基金项目: 国家重大科学仪器设备开发专项(2013YQ47076511);浙江省质量技术监督系统科研计划(20120216)

作者简介: 陈杭升(1991-),女,浙江杭州市人,硕士研究生,专业方向为控制工程。

参考文献

[1] 沈松,应怀樵,刘进明. 基于波束形成的噪声源识别方法的应用和比较[C]//第二十届全国振动与噪声高技术及应用会议,2007.
[2] VINCENT E, GRIBONVAL R, FEVOTTE C. Performance measurement in blind audio source separation[J]. Audio Speech and Language Processing IEEE Transactions,2006,14(4):1462-1469.
[3] YARDIBI T, BAHR C, ZAWODNY N, et al. Uncertainty analysis of the standard delay-and-sum beamformer and array calibration[J]. Journal of Sound and Vibration,2010(13):2654-2682.
[4] MORAN M L, GREENFIELD R J, WILSON D K. Acoustic array tracking performance under moderately complex environmental conditions[J]. Applied Acoustics,2007,68(10):1241-1262.
[5] CIGADA A R F. The delay & sum algorithm applied to microphone array measurements: Numerical analysis and experimental validation[J]. Mechanical Systems and Signal Processing,2007(6):2645-2664.
[6] KHANAL S, SILVERMAN H F, SHAKYA R R. A free-source method(FrSM) for calibrating a large-aperture microphone array[J]. Audio Speech and Language Processing IEEE Transactions,2013,21(8):1632-1639.
[7] 张金圈. 基于波束形成技术的噪声源识别与声场可视化研究[D]. 合肥:合肥工业大学,2010.
[8] 褚志刚,段云炀,沈林邦,等. 奇异值分解波束形成声源识别方法[J]. 电子测量与仪器学报,2014,28(11):1177-1184.
[9] 赵芳芳. 波束形成方法在噪声源识别应用中的仿真和实验研究[D]. 上海:上海交通大学,2007.
[10] 张斌,李朝晖. 光电成像系统的分辨率鉴定与测量技术[J].现代电子技术,2010(1):177-179.
[11] 范瑜晛,刘克,杨军. 渐变截面热声波导管内的声流解析模型[J]. 声学学报,2012(3):252-262.
[12] 周维夫,LAWRENCE D. 点声源技术和应用[C]//2007年声频工程学术交流年会及三省一市声学会议,2007.
[13] BATTISTA L, SCHENA E, SCHIAVONE G, et al. Calibration and uncertainty evaluation using monte carlo method of a simple 2D sound localization system[J]. Sensors Journal IEEE,2013(9):3312-3318.
[14] YARDIBI T, BAHR C, ZAWODNY N, et al. Uncertainty analysis of the standard delay-and-sum beamformer and array calibration[J]. Journal of Sound and Vibration,2010(13):2654-2682.