An analytical approach to local sound field synthesis using linear arrays of loudspeakers
An analytical approach to local sound field synthesis using linear arrays of loudspeakers
复制标题
使用扬声器线性阵列进行局部声场合成的分析方法
DOI：
10.1109/icassp.2011.5946329
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
S. Spors
中科院分区：
文献类型：
--
作者：
J. Ahrens;S. Spors
波场合成等方法旨在在较大的接收器区域上合成给定的所需声场。实际限制会导致大量伪影，通常称为空间混叠。当考虑二次源的线性阵列时，在给定频率以上，这些伪影在接收器区域的任何地方都很明显。本文提出了一种基于谱分割法的分析方法，该方法在有限目标区域内实现了合成声场的精度明显高于传统方法。这种局部精度的提高是通过操纵辅助源驱动函数的空间带宽来实现的。
Methods like Wave Field Synthesis aim at the synthesis of a given desired sound field over a large receiver area. Practical limitations lead to considerable artifacts commonly referred to as spatial aliasing. Above a given frequency these artifacts are apparent anywhere in the receiver area when linear arrays of secondary sources are considered. This paper presents an analytical approach based on the Spectral Division Method which achieves an accuracy of the synthesized sound field which is significantly higher than in conventional approaches in a limited target zone. This local increase in accuracy is achieved via a manipulation of the spatial bandwidth of the secondary source driving function.