Proceedings of the Acoustical Society of Korea Conference (한국음향학회:학술대회논문집)

The Acoustical Society of Korea (한국음향학회)
권호 표지

EXPERIMENTAL RESEARCH ON VIBRATING PLATE AND ITS RADIATION FIELD USING NEARFIELD ACOUSTIC HOLOGRAPHY

  • D.J. Zhang (Wuhan Institute of Physics Chinese Academy of Science) ;
  • J.Z. Cheng (Wuhan Institute of Physics Chinese Academy of Science) ;
  • N.Q. Zuh (Wuhan Institute of Physics Chinese Academy of Science) ;
  • Q. Wang (Wuhan Institute of Physics Chinese Academy of Science) ;
  • X.H> Xia (Wuhan Institute of Physics Chinese Academy of Science)
  • Published : 1994.06.01
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Abstract

This paper presents the nearfield acoustic holography (NAH) imaging system for airborne sound constructed in our own laboratory. The effects of different kinds of noise and the filter function's form in wave number space for reconstructions are analysed emphatically. Using the system we have measured the vibrating mode and the radiated field of a simulative "Chime Stone" made by metal, and gotten interesting results. These results indicate that NAH can be used to research the mechanism of sound production and evalution of musical quality for Chime Stone as an effective means.

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