ZHANG Yongbin　  CHEN Xinzhao　  BI Chunanxing　  CHEN Jian

(Institute of Sound and Vibration Research, Hefei University of Technology  Hefei 230009)

Received May 31, 2007

Revised Jul.9, 2007

Abstract The current main approach to reconstruct and predict the acoustic field of a planar source is Near-field Acoustical Holography (NAH) based on FFT. But this methods has some disadvantages such as wraparound error and edge Gibbs phenomena which will contaminate the results badly. A planar NAH based on equivalent source approach is developed, which has no wraparound error and edge Gibbs phenomena, and it is beneficial for engineering application. The experimental results of acoustic radiation generated by a point-driven plate with clamped boundaries validate the correctness and availability of the method.

PACS numbers: 43.20