| 头相关传输函数空间采样、插值与环绕声重放 |
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| 引用本文： | 谢菠荪. 头相关传输函数空间采样、插值与环绕声重放[J]. 声学学报, 2007, 32(1): 77-82. DOI: 10.15949/j.cnki.0371-0025.2007.01.010 |
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| 作者姓名： | 谢菠荪 |
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| 作者单位： | 1.华南理工大学物理科学与技术学院 声学研究所 广州 510641 |
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| 摘 要： | 从空间方向采样的角度对头相关传输函数(HRTF)空间插值、多通路环绕声重放进行了分析,证明了它们在数学上是完全等价的,不同的HRTF空间插值方法对应于不同的多通路环绕声信号馈给,并给出了多通路环绕声信号馈给以及立体声的正弦定理更严格的数学推导。分析指出企图用相邻线性插值的方法得到侧向的HRTF是错误的,并从保证声像定位的角度,对现有的HRTF相邻线性插值公式进行了修正。分析最后指出,HRTF以及虚拟声的许多分析方法可与多通路环绕声相互借鉴。
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| 收稿时间： | 2005-08-22 |
| 修稿时间： | 2005-08-22 |
Spatial sample, interpolation for HRTF and signal mixing for multichannel surround sound |
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| XIE Bosun. Spatial sample, interpolation for HRTF and signal mixing for multichannel surround sound[J]. ACTA ACUSTICA, 2007, 32(1): 77-82. DOI: 10.15949/j.cnki.0371-0025.2007.01.010 |
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| Authors: | XIE Bosun |
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| Affiliation: | 1.Acoustic Lab., School of Physics, South China University of Technology Guangzhou 510641 |
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| Abstract: | From the point of spatial sample, spatial interpolation for HRTF and signal mixing for multichannel surround sound are analyzed. First, it is proved that they are equivalent mathematically. Different method for HRTF interpolation is equivalent to different signal mixing method for multichannel surround sound. Then, more strict methods for deriving the signal mixing of multichannel surround sound and the law of sine of stereophonic sound are given. It is pointed out that trying to recover lateral HRTF by adjacent linear interpolation is wrong. And for accurate sound image localization, the current adjacent linear interpolation equation for HRTF is revised. At last, it is also pointed out that some methods used in the analysis of HRTF and multichannel sound can be use for reference mutually. |
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