| Spatial symmetry of head-related transfer function |
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| 引用本文： | ZHONG Xiaoli XIE Bosun. Spatial symmetry of head-related transfer function[J]. 声学学报：英文版, 2007, 26(1): 73-84 |
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| 作者姓名： | ZHONG Xiaoli XIE Bosun |
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| 作者单位： | Acoustics Laboratory, School of Physics, South China University of Technology Guangzhou 510641 |
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| 基金项目： | 国家自然科学基金;华南理工大学校科研和教改项目 |
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| 摘 要： | Methods for analyzing the spatial symmetry of head-related transfer function (HRTF) are proposed. The influences of anatomical structures on the symmetry of HRTF are investigated using HRTFs measured on KEMAR mannequin and human subjects. Results show that for KEMAR mannequin, pinnae destroy the front-back symmetry of HRTF above 5 to 6 kHz, while for human subjects the frequency reduces to 2.5 kHz because of the locations of ears. Furthermore, at low and median frequencies, HRTF is approximately left-right symmetrical. While as frequencies increase, the asymmetry caused by the fine anatomical leftright differences appears. The starting frequency and the extent of the left-right asymmetry in HRTF depend on individuals. The analyses demonstrate the spatial symmetrical characteristics of HRTF and the frequency ranges in which the current binaural models are valid.
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| 关 键 词： | 空间对称性 声音传播 双耳声 声波 |
| 修稿时间： | 2006-02-172006-05-30 |
Spatial symmetry of head-related transfer function |
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| ZHONG Xiaoli,XIE Bosun. Spatial symmetry of head-related transfer function[J]. Chinese Journal of Acoustics, 2007, 26(1): 73-84 |
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| Authors: | ZHONG Xiaoli XIE Bosun |
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| Abstract: | Methods for analyzing the spatial symmetry of head-related transfer function (HRTF) are proposed. The influences of anatomical structures on the symmetry of HRTF are investigated using HRTFs measured on KEMAR mannequin and human subjects. Results show that for KEMAR mannequin, pinnae destroy the front-back symmetry of HRTF above 5 to 6 kHz, while for human subjects the frequency reduces to 2.5 kHz because of the locations of ears. Furthermore, at low and median frequencies, HRTF is approximately left-right symmetrical. While as frequencies increase, the asymmetry caused by the fine anatomical leftright differences appears. The starting frequency and the extent of the left-right asymmetry in HRTF depend on individuals. The analyses demonstrate the spatial symmetrical characteristics of HRTF and the frequency ranges in which the current binaural models are valid. |
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