Binaural Reproduction of Finite Difference Simulations Using Spherical Array Processing
Binaural Reproduction of Finite Difference Simulations Using Spherical Array Processing
复制标题
使用球形阵列处理的有限差分模拟的双耳再现
DOI：
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
K. Kowalczyk
中科院分区：
文献类型：
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作者：
J. Sheaffer;M. V. Walstijn;B. Rafaely;K. Kowalczyk
由于其效率和简单性，时域有限差分法正在成为解决声学各个领域中宽带瞬态问题的流行选择。到目前为止，从有限差分模拟中提取双耳响应的问题仅在网格中嵌入收听者几何形状的上下文中讨论。在本文中，我们提出并研究了一种基于声场空间分解的双耳响应绘制方法。使用接收器的体积阵列对有限差分网格进行局部采样，从中计算平面波密度函数，并在球谐域中与自由场头部相关的传递函数集成。从数值鲁棒性和空间混叠的角度研究了体阵列。分析公式，预测阵列的性能开发，促进空间分辨率分析和数值双耳响应分析的有限差分方案。特别强调的是放在阵列处理和由此产生的双耳响应的数值分散的影响。我们的方法相比，基于图像方法的双耳模拟。结果表明，两种方法之间的空间和时间的协议。
Due to its efficiency and simplicity, the finite-difference time-domain method is becoming a popular choice for solving wideband, transient problems in various fields of acoustics. So far, the issue of extracting a binaural response from finite difference simulations has only been discussed in the context of embedding a listener geometry in the grid. In this paper, we propose and study a method for binaural response rendering based on a spatial decomposition of the sound field. The finite difference grid is locally sampled using a volumetric array of receivers, from which a plane wave density function is computed and integrated with free-field head related transfer functions, in the spherical harmonics domain. The volumetric array is studied in terms of numerical robustness and spatial aliasing. Analytic formulas that predict the performance of the array are developed, facilitating spatial resolution analysis and numerical binaural response analysis for a number of finite difference schemes. Particular emphasis is placed on the effects of numerical dispersion on array processing and on the resulting binaural responses. Our method is compared to a binaural simulation based on the image method. Results indicate good spatial and temporal agreement between the two methods.
数值声音合成：音乐声学中的有限差分格式和仿真
DOI：
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发表时间：
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影响因子：
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作者：
Bilbao, Stefan (Queen's University, Belfast, UK University Of Belfast University Of Belfast Queen's University, Belfast, UK Queen's University, Belfast, UK Queen's University, Belfast, UK University Of Belfast Queen's University, Belfast, UK University Of
通讯作者：
Bilbao, Stefan (Queen's University, Belfast, UK University Of Belfast University Of Belfast Queen's University, Belfast, UK Queen's University, Belfast, UK Queen's University, Belfast, UK University Of Belfast Queen's University, Belfast, UK University Of