Near-field sound propagation based on a circular and linear array combination
Near-field sound propagation based on a circular and linear array combination
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基于圆形和线性阵列组合的近场声音传播
DOI：
10.1109/icassp.2015.7178044
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
T. Okamoto
中科院分区：
文献类型：
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作者：
T. Okamoto
提出了一种实现三维近场声传播的新方法。它的主要概念是，从圆形声源辐射的声压在圆外完全抵消使用另一个线性声源。基于二维空间傅里叶变换，解析地导出了相应的驱动函数和两个声源的再现声压。圆源在圆外和圆内再现的辐射特性是不同的。结果，三维近场声传播可以在圆形源的半径内实现，因为圆形源外部的总辐射声压只能被完全抵消。与以往的方法相比，该方法可以通过改变圆的半径来控制传播距离。计算机仿真结果表明，该方法可以实现有效的三维近场声传播。
This paper proposes a new method for realizing 3D near-field sound propagation. Its main concept is that the sound pressure radiated from a circular sound source outside the circle is completely canceled out using another linear sound source. The appropriate driving functions and the reproduced sound pressures of both sound sources are analytically derived based on the two-dimensional spatial Fourier transform. The radiation property reproduced by a circular source outside the circle is different from that inside the circle. As a result, three-dimensional near-field sound propagation can be realized within the radius of a circular source because the total radiated sound pressure outside the circle can only be completely canceled out. Compared with previous methods, the propagation distance can be controlled by changing the circle's radius. The results of computer simulations suggest that the proposed method can realize effective three-dimensional near-field sound propagation.
DOI：
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发表时间：
2018
期刊：
影响因子：
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作者：
Akira Omoto;Hiroshi Kashiwazaki
通讯作者：
Hiroshi Kashiwazaki