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HRTF aided broadband DOA estimation using two microphones

Talagala, DS and Abhayapala, TD (2012) HRTF aided broadband DOA estimation using two microphones 2012 International Symposium on Communications and Information Technologies, ISCIT 2012. pp. 1133-1138.

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Abstract

Two sensor broadband direction of arrival (DOA) estimation suffers from an inherent lack of dimensionality due to having just two sensors, yet humans and other animals are able to overcome this limitation using subtle variations introduced by the ears. Application of existing DOA estimation techniques to such systems becomes complicated due to the ill-behaved nature of the Head Related Transfer Function (HRTF). In this paper we present a subband signal extraction and focussing technique which retains the diversity information of the HRTF. We then develop a framework for combining these signals for subspace DOA estimation and investigate the constraints imposed on the single and multi-source DOA estimation problems. Finally, estimation performance is compared with existing techniques and we find performance has improved to be comparable to human localisation abilities. © 2012 IEEE.

Item Type: Article
Authors :
NameEmailORCID
Talagala, DSd.talagala@surrey.ac.ukUNSPECIFIED
Abhayapala, TDUNSPECIFIEDUNSPECIFIED
Date : 1 December 2012
Identification Number : 10.1109/ISCIT.2012.6380863
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 13:09
Last Modified : 17 May 2017 15:09
URI: http://epubs.surrey.ac.uk/id/eprint/838182

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