期刊
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
卷 146, 期 1, 页码 EL34-EL38出版社
ACOUSTICAL SOC AMER AMER INST PHYSICS
DOI: 10.1121/1.5116333
关键词
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资金
- National Natural Science Foundation of China [11774040, 11874096]
- Fundamental Research Funds for the Central Universities [2018CDQYHK0031, 2018CDXYTW0031]
The core of equivalent source method based near-field acoustic holography is to solve the equivalent source strength with the measured pressure and the transfer matrix, which is a typical ill-posed inverse problem. In this work, an explicit formula is proposed in which the regularization parameter is proportional to the product of the hologram distance and the maximum singular value of the transfer matrix. Utilizing the proposed approach, robust acoustic field reconstruction can be achieved even when the hologram distance is 5 times larger than the average microphone spacing. (C) 2019 Acoustical Society of America
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