Fast calculation system specialized for head-related transfer function based on boundary element method
Fast calculation system specialized for head-related transfer function based on boundary element method
复制标题
DOI：
10.1121/1.2191608
复制
发表时间：
2006-05-01
影响因子：
2.4
通讯作者：
Ise, Shiro
中科院分区：
文献类型：
--
作者：
Otani, Makoto;Ise, Shiro
最近。利用人体头部的计算机模型和边界元法进行了头部相关传递函数（HRTF）的数值计算。在计算过程中引入互易定理，以缩短计算时间，否则计算时间会很长。另一方面，另一种针对任意源位置的快速HRTF计算方法，该方法通过提前计算与源位置无关的因子来实现。是由作者提出的。使用该算法，可以在几秒钟内用普通PC机获得任意源位置的HRTF。所得到的hrtf比使用互易定理的hrtf更精确，计算速度更快。然而，为了在双耳声音再现过程中对头部运动和旋转或移动的声源做出反应，需要进一步加快这一过程。本文提出了一种更快的计算方法，在作者之前的算法中加入时域运算。此外，还提出了新的计算公式，消除了预处理过程中额外的计算时间。这种方法比以前的方法快，但在较高的频率上存在一些差异。(c) 2006年美国声学学会。
Recently. development of a numerical calculation of the head-related transfer function (HRTF) has been conducted using a computer model of a human head and the boundary element method. The reciprocity theorem is incorporated into the computational process in order to shorten the computational time, which is otherwise very long. On the other hand, another fast HRTF calculation method for any source position, which is realized by calculating factors independent of the source position in advance. has been suggested by the authors. Using this algorithm, the HRTF for any Source position can be obtained in a few seconds with a common PC. The resulting HRTFs are more precise and are calculated faster than those by using the reciprocity theorem. However, speeding the process up even further is required in order to respond to a head movement and rotation or to moving Sources during binaural sound reproduction. In this paper, a faster calculation method by incorporating a time domain operation into the authors' previous algorithm is proposed. Additionally, the new formulation, which eliminates the extra computational time in the preprocess, is proposed. This method is shown to be faster than the previous ones, but there are some discrepancies at higher frequencies. (c) 2006 Acoustical Society of America.