Abstract
Time delays of arrival are important parametric representations of acoustic signals captured by a passive microphone array. But they are rarely directly used in an array signal processing system that usually assumes the explicit knowledge of a sound source location. In this chapter we turn our attention to passive source localization techniques that extract the spatial information of a sound source from time delays of arrival estimated using approaches investigated in the previous chapter. Parametric estimation is in general difficult when the signal model is nonlinear. Such is the case in the problem of source localization. We will review a number of advanced approaches with some examples and comment on their technical merits and shortcomings for practical implementations. A successful real-time acoustic source localization system for video camera steering in teleconferencing is presented at the end of this chapter.
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Huang, Y., Benesty, J., Elko, G.W. (2004). Source Localization. In: Huang, Y., Benesty, J. (eds) Audio Signal Processing for Next-Generation Multimedia Communication Systems. Springer, Boston, MA. https://doi.org/10.1007/1-4020-7769-6_9
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DOI: https://doi.org/10.1007/1-4020-7769-6_9
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