Chin. Phys. Lett.  2010, Vol. 27 Issue (12): 124302    DOI: 10.1088/0256-307X/27/12/124302
FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
Directivity of Spherical Polyhedron Sound Source Used in Near-Field HRTF Measurements
YU Guang-Zheng1**, XIE Bo-Sun1,2, RAO Dan1
1Acoustic Laboratory, Department of Physics, School of Science, South China University of Technology, Guangzhou 510641
2State Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou 510641
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YU Guang-Zheng, XIE Bo-Sun, RAO Dan 2010 Chin. Phys. Lett. 27 124302
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Abstract The omnidirectional character is one of important requirements for the sound source used in near-field head-related transfer function (HRTF) measurements. Based on the analysis on the radiation sound pressure and directivity character of various spherical polyhedron sound sources, a spherical dodecahedral sound source with radius of 0.035 m is proposed and manufactured. Theoretical and measured results indicate that the sound source is approximately omnidirectional below the frequency of 8 kHz. In addition, the sound source has reasonable magnitude response from 350 Hz to 20 kHz and linear phase characteristics. Therefore, it is suitable for the near-field HRTF measurements.
Keywords: 43.60.Gk      43.66.Qp     
Received: 02 August 2010      Published: 23 November 2010
PACS:  43.60.Gk (Space-time signal processing, other than matched field processing)  
  43.66.Qp (Localization of sound sources)  
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https://cpl.iphy.ac.cn/10.1088/0256-307X/27/12/124302       OR      https://cpl.iphy.ac.cn/Y2010/V27/I12/124302
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Articles by authors
YU Guang-Zheng
XIE Bo-Sun
RAO Dan
[1] Xie B S 2008 Head Related transfer Function and Virtual Auditory (Beijing: National Defense Industry Press) (in Chinese)
[2] Yu G Z and Xie B S 2007 Audio Engineering 31 45 (in Chinese)
[3] Nishino T, Hosoe S, Kateda K and Itakura F 2004 The 18th International Congress on Acoustics (Kyoto, Japan 4–9 April 2004) p II-1437
[4] Gong M, Xiao Z, Qu T S, Wu X H and Li X D 2007 Appl. Acoust. 26 326 (in Chinese)
[5] Brungart D S and Rabinowitz W M 1999 J. Acoust. Soc. Am. 106 1465
[6] Hosoe S et al 2006 Proceedings of the 2006 IEEE International Conference on Acoustics, Speech, and Signal Processing (Toulouse, France 14–19 May 2006) 5 329
[7] Chen X X, Yu G Z and Li X D 2009 Audio Engineering 33 20 (in Chinese)
[8] Yu G Z, Xie B S and Rao D 2008 Chin. Phys. Lett. 25 2926
[9] Morse P M and Ingard K U 1968 Theoretical Acoustics (Princeton: Princeton University Press)
[10] Xie B S 2008 Chin. J. Acoust. 33 504 (in Chinese)
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