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- W2390983715 abstract "The distributed source boundary point method(DSBPM) is proposed to be the transform algorithm of nearfield acoustic holography(NAH).The theoretical model of the DSBPM based nearfield acoustic holography is established.With the method,some problems are avoided which occurs as the boundary element method(BEM) is used,such as the complicated variable interpolation,the treatment of singular integral and that of nonuniqueness of solution at the characteristic wavenumber.Considering the high sensitivity of the reconstructed results to the measurement errors,the Tikhonov regularization method is proposed to stabilize the reconstruction procedure and restrict the influence of errors.In order to realize the reconstruction of a semi-free acoustic field,a new method is proposed in which the influence of the reflection from the ground is considered.An experiment on a speaker is carried out to validate the feasibility and correctness of the proposed method." @default.
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- W2390983715 date "2005-01-01" @default.
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- W2390983715 title "Novel nearfield acoustic holography based on the distributed source boundary point method" @default.
- W2390983715 hasPublicationYear "2005" @default.
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