| 复杂声场环境下的近场声全息技术 |
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| 引用本文： | 杜向华,朱海潮,毛荣富,朱海鹏.复杂声场环境下的近场声全息技术[J].海军工程大学学报,2011(4):80-83. |
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| 作者姓名： | 杜向华 朱海潮 毛荣富 朱海鹏 |
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| 作者单位： | 海军工程大学振动与噪声研究所; |
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| 摘 要： | 近场声全息对测量环境的严格要求限制了它在工程实际中的应用,特别是利用互谱法求解全惠面声压时,参考信号的获取极为关键.针对有多个噪声源同时存在的复杂声场环境,提出一种工程解决方法,利用振动信号和声源出口处的信号作为近场声全息的参考信号,在传递函数法的基础上推导出全息面上分离的复声压,由此达到复杂声场环境下的近场声全息重建...
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| 关 键 词： | 近场声全息 复杂声场 传递函数 |
On near-field holography technology used in complicated sound environment |
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| DU Xiang-hua,ZHU Hai-chao,MAO Rong-fu,ZHU Hai-peng.On near-field holography technology used in complicated sound environment[J].Journal of Naval University of Engineering,2011(4):80-83. |
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| Authors: | DU Xiang-hua ZHU Hai-chao MAO Rong-fu ZHU Hai-peng |
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| Institution: | DU Xiang-hua,ZHU Hai-chao,MAO Rong-fu,ZHU Hai-peng(Inst.of Noise & Vibration,Naval Univ.of Engineering,Wuhan 430033,China) |
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| Abstract: | The strict demand of the measurement environment by the near-field acoustic holography(NAH) limits the application of NAH in engineering.Especially,reference signals are important in calculating pressure on hologram.An engineering method was presented for near-field holography used in complicated sound environment.Based on the transfer function method,a vibration or sound signal with little contamination of other source was used as a reference signal to separate the target sources.Thus the reconstruction of... |
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| Keywords: | near-field acoustic holography complex sound field transfer function |
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