The sound field reproduction method based on the spacial covariances and its reproduction efficiency.
The sound field reproduction method based on the spacial covariances and its reproduction efficiency.
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基于空间协方差的声场再现方法及其再现效率
DOI：
10.1121/1.4782634
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发表时间：
2008
影响因子：
2.4
通讯作者：
Kazunori Miyoshi
中科院分区：
文献类型：
--
作者：
Hiroki Hagiwara;Yoshinori Takahashi;M. Tohyama;Kazunori Miyoshi
提出了一种基于空间协方差的声场再现方法。波面控制和头部相关传递函数的卷积是声场再现的主要技术。相反，这份报告的合著者高桥和Tohyama认为，我们通过耳朵感知的声场的空间印象是通过保留观察点之间的相对关系来再现的，即使波面不是完全控制的。此外，他们还提出了一种新的声场再现方法，可以控制声场中的点对点协方差[19 ICA，RBA15-012]。在这项工作中，我们论证了基于协方差的方法与传统方法的区别，如立体声回放和基于Kirchhoff-Helmholtz方程的边界面控制。然后，我们从重复性和设备成本的角度讨论了几种方法的性能。
This paper describes a sound field reproduction method based on the spatial covariances. Wave surface control and convoluting the head related transfer function are major techniques for sound field reproduction. On the contrary, Takahashi and Tohyama, coauthors of this report, considered that the spatial impressions of a sound field, which we perceive through our ears, are reproduced by preserving the relative relationship between the observation points even if the wave surface is not completely controlled. Moreover, they proposed a new sound field reproduction method that can control the point‐to‐point covariance in a sound field [19th ICA, RBA15‐012]. In this work, we demonstrated about the differences between the covariance based method and the conventional methods, such as stereophonic playback and boundary surface control based on the Kirchhoff–Helmholtz equation. Then, we discussed the performances of several methods on the point of view of reproductivity and device cost.