Near-field acoustic holography analysis of modulated sound source

被引：0
|
作者：
MAO Rongfu ZHU Haichao DU Xianghua ZHU Haipeng (Institute of Noise and Vibration
机构：
来源：
Chinese Journal of Acoustics | 2011年 / 30卷 / 04期
关键词：
Near-field acoustic holography analysis of modulated sound source; NAH;
D O I：
10.15949/j.cnki.0217-9776.2011.04.008
中图分类号：
O438.1 [全息光学];
学科分类号：
070207 ; 0803 ;
摘要：
When conventional near-field acoustic holography(NAH) technique is applied to sound field induced by modulated signal,the modulating frequency can not be revealed by the reconstructed results.To solve the problem,a NAH analysis methodology for modulated sound source was proposed.Firstly,Hilbert transform was introduced to demodulate the signal,and then modulating component was reconstructed by NAH technique.Both numerical simulation and experiment results demonstrate that accurate reconstruction analysis can be obtained by the proposed method.
引用
收藏
页码：398 / 408
页数：11
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