| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Calculation and Analysis of Near-Field Head-Related Transfer Functions from a Simplified Head-Neck-Torso Model |
| CHEN Ze-Wei1, YU Guang-Zheng1**, XIE Bo-Sun1,2, GUAN Shan-Qun3 |
1Laboratory of Acoustics, Department of Physics, School of Science, South China University of Technology, Guangzhou 510640
2State Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou 510640
3Telecommunication College, Beijing University of Posts and Telecommunications, Beijing 100876
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| Cite this article: |
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YU Guang-Zheng, XIE Bo-Sun, GUAN Shan-Qun et al 2012 Chin. Phys. Lett. 29 034302 |
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Abstract To evaluate the overall effect of the neck and torso on the head-related transfer function (HRTF), a simplified head-neck-torso (HNT) model, which consists of a spherical head, spherical torso and cylindrical neck, is proposed and the corresponding HRTFs are calculated using the boundary element method (BEM). The results indicate that the HRTF magnitudes for the HNT model are different from those of the existing spherical head-and-torso model (HAT) above 0.5 kHz, especially in the near-field and contralateral region. The discrepancy in the HRTF magnitudes leads to a discrepancy in the interaural level differences (ILDs) for the HNT and HAT models, which reaches a level of ±10 dB at source distance of 0.2 m. As the source distance increases, the discrepancy in the results of the HNT and HAT models reduces. Measurement on practical HNT and HAT models validates the analysis. Therefore, the neck influences near-field HRTFs and should be included in the near-field HRTF calculation.
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| Keywords:
43.60.Gk
43.66.Qp
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Received: 28 October 2011
Published: 11 March 2012
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| PACS: |
43.60.Gk
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(Space-time signal processing, other than matched field processing)
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43.66.Qp
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(Localization of sound sources)
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[5] Treeby B E, Paurobally R M and Pan J 2007 Proceedings of the 13th International Conference on Auditory Display p 79
[6] Gumerov N A and Duraiswami R 2002 J. Acoust. Soc. Am. 112 2688
[7] Ise S and Otani M Proceedings of the 2002 International Conference on Auditory Display p 02-1
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