声全息声压场插值重构方法研究  

Research on Interpolation and Reconstruction Method of Acoustic Holographic Sound Pressure Field

作　　者：赵玉贵 刘志红[1,2] 仪垂杰 宿元亮 ZHAO Yu-gui;LIU Zhi-hong;YI Chui-jie;SU Yuan-liang(College of Mechanical and Automotive Engineering,Qingdao University of Technology,Shandong Qingdao 266520,China;Key Laboratory of the Ministry of Education“Industrial Fluid Energy Conservation and Pollution Control”,Qingdao University of Technology,Shandong Qingdao 266520,China)

机构地区：[1]机械与汽车工程学院青岛理工大学,山东青岛266520 [2]教育部重点实验室“工业流体节能与污染控制”青岛理工大学,山东青岛266520

出　　处：《机械设计与制造》2022年第4期150-155,159,共7页Machinery Design & Manufacture

基　　金：语音分布式麦克风阵列稀疏化测向方法和关键技术基础研究(61871447);多源运动声场声特征提取和空间稀疏化方法及测量关键技术研究(61671262)。

摘　　要：声全息是一种有效的声场测量分析技术,全息面上的声压重建精度直接影响声源的空间分辨率。基于空间面积分声压重建理论,提出一种融合Newton插值和克希荷夫积分的声压重构方法,通过构造测量点声压及位置声矢量的牛顿插值函数和设置全息面上的虚拟克希荷夫面,由少量麦克风测量点数据,经插值运算和克希荷夫积分重建出全息面上任意位置点上的声压值及声矢量,快速高精度实现全息面声压重构,经数值仿真分析和实验,验证了该方法的准确性和高效性。Acoustic holography is an effective sound field measurement and analytical technique.The accuracy of sound pressure reconstruction on holographic surface affects the spatial resolution of the sound source directly.A novel sound field reconstruction method fused Newton interpolation with Kirchhoff integral formula is proposed based on the sound pressure reconstruction formula in spatial area.Creating Newton interpolation function based on sound pressure and positional sound vector and positioning virtual Kirchhoff surface on the holographic plane,at the basis of measuring point data from a small number of microphones,reconstructing the sound pressure value and sound vector at any point on the holographic surface by interpolation and Kirchhoff integral,thus realize the reconstruction of the sound pressure of the holographic surface quickly and accurately.The accuracy and efficiency of the method are verified by numerical simulation analysis and experiments.

关 键 词：声全息 牛顿插值 克希荷夫积分 声场重构 

分 类 号：TH16[机械工程—机械制造及自动化] TB52[理学—物理]