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LIU Xiao-ling, ZHANG Xiao-hui. Effect of System Parameters on Noise Identification by Holography[J]. Journal of University of Electronic Science and Technology of China, 2005, 34(4): 541-544.
Citation: LIU Xiao-ling, ZHANG Xiao-hui. Effect of System Parameters on Noise Identification by Holography[J]. Journal of University of Electronic Science and Technology of China, 2005, 34(4): 541-544.
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Effect of System Parameters on Noise Identification by Holography

  • 1.

    Traffic and Automobile Engineering College,Xihua University;

  • 2.

    Dept. of Science and Technology,Xihua University Chengdu 610039

  • Received Date: 2005-01-13
  • Publish Date: 2005-08-15
  • According to the holography reconstruction formula educed from Kirchhoff integral formula, this paper introduces the principle of near-field acoustical holography(NAH)in noise identification and reconstructs the acoustic field by a special arithmetic of dimensional frequency domain in order to reduce the quantity of calculation and improve the efficiency of reconstruction. Meanwhile, the affection of the main parameters of calculating and testing system on the results of noise identification is analyzed and the correctness of the reconstructing formula is validated. As a result, a computer testing and calculating program has been developed. The experimental outcomes indicate that with the revision of the reconstructing formula and taking the influences of the measuring system's parameters into account sufficiently according to the practical conditions, the acoustic holography can be used to distinguish the sources of noises from each other efficiently so to provide the dependable basis for taking the noise control measures.
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  • 1. 

    沈阳化工大学材料科学与工程学院 沈阳 110142

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Effect of System Parameters on Noise Identification by Holography

  • 1. Traffic and Automobile Engineering College,Xihua University;
  • 2. Dept. of Science and Technology,Xihua University Chengdu 610039
  • Received Date: 2005-01-13
  • Publish Date: 2005-08-15

Abstract: According to the holography reconstruction formula educed from Kirchhoff integral formula, this paper introduces the principle of near-field acoustical holography(NAH)in noise identification and reconstructs the acoustic field by a special arithmetic of dimensional frequency domain in order to reduce the quantity of calculation and improve the efficiency of reconstruction. Meanwhile, the affection of the main parameters of calculating and testing system on the results of noise identification is analyzed and the correctness of the reconstructing formula is validated. As a result, a computer testing and calculating program has been developed. The experimental outcomes indicate that with the revision of the reconstructing formula and taking the influences of the measuring system's parameters into account sufficiently according to the practical conditions, the acoustic holography can be used to distinguish the sources of noises from each other efficiently so to provide the dependable basis for taking the noise control measures.

LIU Xiao-ling, ZHANG Xiao-hui. Effect of System Parameters on Noise Identification by Holography[J]. Journal of University of Electronic Science and Technology of China, 2005, 34(4): 541-544.
Citation: LIU Xiao-ling, ZHANG Xiao-hui. Effect of System Parameters on Noise Identification by Holography[J]. Journal of University of Electronic Science and Technology of China, 2005, 34(4): 541-544.
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