Evanescentwave reproduction using linear array of loudspeakers
Evanescentwave reproduction using linear array of loudspeakers
复制标题
使用线性扬声器阵列再现倏逝波
DOI：
10.1109/aspaa.2011.6082299
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
Y. Haneda
中科院分区：
文献类型：
--
作者：
Hiroaki Itou;K. Furuya;Y. Haneda
提出了一种声倏逝波再现方法。渐逝波具有更快的距离衰减。在大多数声场再现方法中，倏逝波是空间混叠分量，并且是用于再现纯平面波的不期望的波场。然而，由于其更快的距离衰减特性，它不会影响这些方法。在这项工作中，我们试图只再现倏逝波。如果仅再现渐逝波，则其可以应用于可以将声场定位在一个特定位置周围的局部区域声音再现系统。通过使用线性扬声器阵列和数字滤波器来构造渐逝波再现系统。计算机仿真结果表明，我们的方法实现了更快的距离衰减比一个简单的声源。
An acoustic evanescent wave reproduction method is presented. Evanescent waves have faster distance attenuation. In most sound field reproduction approaches, the evanescent wave is a spatial aliasing component and is an undesirable wave field for reproducing a pure plane wave. However, because of its faster distance attenuation property, it does not affect these approaches. In this work, we attempt to reproduce only the evanescent wave. If only the evanescent wave is reproduced, it can be applied for a local area sound reproduction system that can localize a sound field around one specific location. The evanescent wave reproduction system is constructed by using a linear loudspeaker array and digital filters. Computer simulation results showed that our method achieves faster distance attenuation than a simple sound source.