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Sound field separation technique based on equivalent source method and double-layer particle velocity measurements

Bi Chuan-Xing Hu Ding-Yu Zhang Yong-Bin Xu Liang

Sound field separation technique based on equivalent source method and double-layer particle velocity measurements

Bi Chuan-Xing, Hu Ding-Yu, Zhang Yong-Bin, Xu Liang
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  • Abstract views:  1608
  • PDF Downloads:  562
  • Cited By: 0
Publishing process
  • Received Date:  18 September 2012
  • Accepted Date:  20 December 2012
  • Published Online:  05 April 2013

Sound field separation technique based on equivalent source method and double-layer particle velocity measurements

  • 1. Institute of Sound and Vibration Research, Hefei University of Technology, Hefei 230009, China
Fund Project:  Project supported by the National Natural Science Foundation of China (Grant Nos. 11274087, 11004045) and the Research Fund for the Doctoral Program of Higher Education, China (Grand No. 20100111110007).

Abstract: Two sound field separation techniques based on equivalent source method are proposed:one is based on the double-layer pressure measurements and the other is based on the single-layer pressure-velocity measurements. In this paper, a sound field separation technique based on equivalent source method but using the double-layer velocity measurements is proposed. First, the theoretical description of this technique is given, and then numerical simulations and experiments are conducted to demonstrate the validity of this technique. By comparison with the technique based on double-layer pressure measurements, the superiority of the proposed technique in separating particle velocity field is shown. And also, in the numerical simulations, the influences of the strength of disturbing source and the distance between two measurement planes on separation accuracy are investigated.

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