Research of HRTF Character of Head-Mounted Microphone Array

Yi Zhang; B.B. Shen; S.J. Meng

doi:10.4028/www.scientific.net/AMM.743.479

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 743Research of HRTF Character of Head-Mounted...

Research of HRTF Character of Head-Mounted Microphone Array

Abstract:

Head-mounted microphone array has practical applications in robot acoustic localization system and wearable anti-sniper positioning system. Usually, sound source localization methods are based on linear or nonlinear unblocked microphone arrays. But head-mounted microphone array is a kind of blocked arrays, with which it needs information of Head Related Transfer Function (HRTF) for precise localization. In this paper, we research the HRTF character of head-mounted microphone array for localization in high frequency band and low frequency band respectively, and design a localization algorithm for low frequency sound based on head-mounted microphone array to analysis the threshold between high and low frequency. Experimental results show that the Head-mounted Microphone Array causes diffraction effect for low frequency sound, and amplitude attenuation effect for high frequency sound, and when the low frequency band is limited into 1 KHz, the localization algorithm for low frequency realizes the best performance.

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Periodical:

Applied Mechanics and Materials (Volume 743)

Pages:

479-483

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.743.479

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Online since:

March 2015

Authors:

Yi Zhang, B.B. Shen, S.J. Meng

Keywords:

Diffraction Path, Head Related Transfer Function, Head-Mounted Microphone Array, Sound Localization

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