Simulation and experimental investigations for the patch near-field acoustical holography
Simulation and experimental investigations for the patch near-field acoustical holography
复制标题
贴片近场声全息的仿真与实验研究
DOI：
10.1243/09544062jmes727
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发表时间：
2008-06
影响因子：
2
通讯作者：
Xue, W.F.
中科院分区：
文献类型：
--
作者：
Yang, C.;Chen, J.;Li, J.Q.;Xue, W.F.
为了重建声场，基于快速傅里叶变换（FFT）的近场声全息（NAH）要求测量表面必须延伸到声压降低到较低水平的区域。该方法不适合重建部分声场，其中测量孔径大小由于物理需要或作为降低测量成本的方式而受到限制。统计最优NAH（SONAH）直接在空间域进行平面到平面的计算，避免了基于FFT的NAH中出现的所有误差，显着提高了部分声场重建的精度。在本工作中，结合不同的正则化方法，进行SONAH来重建部分声场。分别对重建区域中心段和外围段的误差进行研究。仿真和实验表明，SONAH能够成功地重建部分声场，并且中心部分的误差小于外围部分的误差。实验证明，Tikhonov正则化结合Engl准则适用于实际声场的重建。
In order to reconstruct the sound field, the fast Fourier transform (FFT)-based near-field acoustical holography (NAH) demands that the measurement surface must extend to a region where the sound pressure decreases to a low level. This method is unfit for reconstructing the partial sound field in which the measurement aperture size is limited either by physical necessity or as a way of reducing the measurement cost. Statistically optimal NAH (SONAH) performs plane-to-plane calculations directly in the spatial domain, avoids all errors occurred in the FFT-based NAH and significantly increases the accuracy of the reconstruction of the partial sound field. In the present work, combined with the different regularization methods, SONAH is performed for reconstructing the partial sound field. The errors over the central and the peripheral sections of the reconstruction area are researched separately. Simulations and experiments show that SONAH is successful in reconstructing the partial sound field and the errors over the central sections are smaller than that over the peripheral sections. Experiments demonstrate that Tikhonov regularization in conjunction with Engl's criterion is suitable for the reconstruction of the practical sound field.
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影响因子：
2.4
作者：
Cho, YT;Bolton, JS;Hald, J
通讯作者：
Hald, J
影响因子：
2.4
作者：
Jacobsen, Finn;Jaud, Virginie
通讯作者：
Jaud, Virginie
影响因子：
2.4
作者：
MAYNARD, JD;WILLIAMS, EG;LEE, Y
通讯作者：
LEE, Y
影响因子：
2.4
作者：
WILLIAMS, EG;MAYNARD, JD;SKUDRZYK, E
通讯作者：
SKUDRZYK, E
影响因子：
1
作者：
R. Steiner;J. Hald
通讯作者：
R. Steiner;J. Hald