文章摘要
杨祥清,汪增福.基于麦克风阵列的三维声源定位算法及其实现[J].声学技术,2008,(2):260~265
基于麦克风阵列的三维声源定位算法及其实现
3D sound source localization algorithm and its implementation based on microphone array
投稿时间:2007-03-26  修订日期:2007-06-24
DOI:
中文关键词: 声源定位  互功率谱相位  球形差值  随机梯度下降
英文关键词: sound source localization  crosspower spectrum phase(CSP)  spherical interpolation(SI)  LMS
基金项目:
作者单位
杨祥清 中国科学技术大学自动化系, 合肥, 230027 
汪增福 中国科学技术大学自动化系, 合肥, 230027 
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中文摘要:
      从系统的角度对真实声场环境下基于到达时间差的的声源定位算法进行了研究,提出了一种改进的互功率谱相位(CSP)时延估计算法,在此基础上,提出了一种用于定位估计的基于球形差值(SI)的随机梯度下降(LMS)算法。为了验证算法的有效性,实际构建了三维空间中的点声源定位系统。实验结果表明所提出的算法具有较高的定位精度。
英文摘要:
      Sound source localization based on time difference of arrivals in the acoustic environment is dis-cussed from the systematic perspective.A modified Crosspower-Spectrum Phase(CSP) method is presented for time delay estimation(TDE) while a least mean square(LMS) approach based on the Spherical Interpolation(SI) is followed to derive the source coordinates.To verify the algorithm,a real point source localization system in 3D space is established.Experimental results show that the algorithm gives high accuracy of the source location.
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