| Reconstruction and prediction of coherent acoustic field with the combined wave superposition approach |
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| 作者姓名： | LI Weibing CHEN Jian YU Fei CHEN Xinzhao |
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| 作者单位： | Institute of sound and vibration research, Hefei University of Technology Hefei 230009 |
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| 基金项目： | This work was supported by the National Natural Science Foundation of China (50275044)
the Key Project of Chinese Ministry of Education (02126) |
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| 摘 要： | The routine wave superposition approach cannot be used in reconstruction and prediction of a coherent acoustic field, because it is impossible to separate the pressures generated by individual sources. According to the superposition theory of the coherent acoustic field , a novel method based on the combined wave superposition approach is developed to reconstruct and predict the coherent acoustic field by building the combined pressure matching matrixes between the hologram surfaces and the sources. The method can reconstruct the acoustic information on surfaces of the individual sources, and it is possible to predict the acoustic field radiated from every source and the total coherent acoustic field can also be calculated spontaneously. The experimental and numerical simulation results show that this method can effectively solve the holographic reconstruction and prediction of the coherent acoustic field and it can also be used as a coherent acoustic field separation technique. The study on this novel method extends the application scope of the acoustic holography technique.
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| 关 键 词： | 重建 预测 连贯声场 组合波 重叠逼近 |
| 收稿时间： | 2005-07-19 |
| 修稿时间： | 2005-07-192005-09-12 |
Reconstruction and prediction of coherent acoustic field with the combined wave superposition approach |
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| Authors: | LI Weibing CHEN Jian YU Fei CHEN Xinzhao |
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| Abstract: | The routine wave superposition approach cannot be used in reconstruction and prediction of a coherent acoustic field, because it is impossible to separate the pressures generated by individual sources. According to the superposition theory of the coherent acoustic field , a novel method based on the combined wave superposition approach is developed to reconstruct and predict the coherent acoustic field by building the combined pressure matching matrixes between the hologram surfaces and the sources. The method can reconstruct the acoustic information on surfaces of the individual sources, and it is possible to predict the acoustic field radiated from every source and the total coherent acoustic field can also be calculated spontaneously. The experimental and numerical simulation results show that this method can effectively solve the holographic reconstruction and prediction of the coherent acoustic field and it can also be used as a coherent acoustic field separation technique. The study on this novel method extends the application scope of the acoustic holography technique. |
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