噪声与振动控制

›› 2011, Vol. 31 ›› Issue (4): 119-124.DOI: 10.3969/j.issn.1006-1355-2011.04.028

• 4.环境振动与环境声学 • 上一篇    下一篇

采用波束形成和传递路径分析的室内噪声源评价

成健1,孙杰2,刘斌2,黄震宇1   

  1. （ 1.上海交通大学 电子信息与电气工程学院， 上海 200240;2.上海振华重工（集团）股份有限公司， 上海 200215 ）
  • 收稿日期:2010-11-10 修回日期:2011-01-12 出版日期:2011-08-18 发布日期:2011-08-18
  • 通讯作者: 黄震宇

Enclosure Noise Source Evaluation Based on Beamforming and Transfer Path Analysis

CHENG Jian 1,SUN Jie 2, LIU Bin 2, HUANG Zhen-yu 1   

  1. ( 1. School of Electronic, Information and Electrical Engineering, Shanghai Jiaotong University, Shanghai 200240, China; 2. Shanghai Zhenhua Heavy Industry Co.Ltd, Shanghai 200215, China )
  • Received:2010-11-10 Revised:2011-01-12 Online:2011-08-18 Published:2011-08-18

摘要： 在室内噪声控制中，由于噪声源数量多且室内声场复杂，造成噪声源评价困难。提出一种室内噪声源评价方法：首先根据声源可能存在的位置进行区域划分，然后在各区域内利用波束形成方法进行声源定位，找到该区域A计权声压级最大的噪声源。再将各主要声源对噪声评价位置进行传递路径分析，计算各声源对该位置的贡献量。最后通过传递路径分析合成的噪声与该位置实际所测噪声的误差分析判断主要声源识别的有效性。仿真研究表明该方法能有效降低室内混响对声源定位的影响，减小传递路径方法的工作量，便于找到对评价位置影响最大的主噪声源。

关键词: 声学, 室内噪声, 声源评价, 波束形成, 传递路径分析

Abstract: Noise source evaluation for enclosure noise control is a difficult problem due to the large amount of noise sources involved in the complicated acoustic field. In this paper, an enclosure noise source evaluation method is presented. This method mainly includes four steps: (1) dividing the enclosure space into several sub-spaces according to the potential source positions; (2) applying the beamforming method in terms of the measured A-weighting sound pressure level in each sub-space to find the significant sources;(3) computing the contribution of each significant source to the target position by the transfer path analysis (TPA), and (4) employing an error analysis of the calculated noise to verify the noise evaluation. The simulation results show that this approach can reduce the reverberation influence and TPA work. Therefore, it is a good approach for the evaluation of the enclosure noise sources

Key words: acoustics, enclosure noise, noise source evaluation, beamforming, transfer path analysis (TPA)

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