The Method of Selecting the Distance between Holographic Plane and Source Plane in NAH

Abstract:

In the near-field acoustic holography, the parameter have an important effect on the reconstruction precision. As to the distance between the holographic plane and the source plane, there are the spatial resolution and the attenuation rule of evanescent wave which need to be considered. As soon as meeting the two demands the reconstruction result represent the sound pressure distribution of source plane. The simulation proves that the method can reduce the error of holographic reconstruction and improve the reconstruction precision.

• Periodical: Advanced Materials Research (Volumes 490-495)
• Pages: 737-741
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.490-495.737
• Online since: March 2012
• Authors: Bo Tang, Rui Liang Li, Shuang Xi Tang, Guo Ping Liu, Jie Gao
• Keywords: Evanescent Wave, Near-Field Acoustic Holography, Parameter Selection, Spatial Resolution

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DOI: 10.1121/1.394536

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