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Simultaneous localization of multiple sound sources using blind adaptive MIMO filtering

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5 Author(s)
Buchner, H. ; Multimedia Commun. & Signal Process., Erlangen-Nurnberg Univ., Erlangen, Germany ; Aichner, R. ; Stenglein, J. ; Teutsch, H.
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Blind adaptive filtering for time delay of arrival (TDOA) estimation is a very powerful method for acoustic source localization in reverberant environments with broadband signals like speech. Based on a recently presented generic framework for blind signal processing for convolutive mixtures, called TRINICON, we present a TDOA estimation method for simultaneous multidimensional localization of multiple sources. Moreover, an interesting link to the known single-input multiple-output (SIMO)-based adaptive eigenvalue decomposition (AED) method is shown. We evaluate the novel multiple-input multiple-output (MIMO)-based approach and compare it with the known SIMO-based method in a reverberant acoustic environment using reference data of the positions obtained from infrared sensors. The results show that the new approach is very robust against reverberation and background noise.

Published in:

Acoustics, Speech, and Signal Processing, 2005. Proceedings. (ICASSP '05). IEEE International Conference on  (Volume:3 )

Date of Conference:

18-23 March 2005