@conference {18466,
	title = {Active speech source localization by a dual coarse-to-fine search},
	booktitle = {2001 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2001. Proceedings. (ICASSP {\textquoteright}01)},
	volume = {5},
	year = {2001},
	month = {2001///},
	pages = {3309-3312 vol.5 - 3309-3312 vol.5},
	publisher = {IEEE},
	organization = {IEEE},
	abstract = {Accurate and fast localization of multiple speech sound sources is a significant problem in videoconferencing systems. Based on the observation that the wavelengths of the sound from a speech source are comparable to the dimensions of the space being searched, and that the source is broadband, we develop an efficient search strategy that finds the source(s) in a given space. The search is made efficient by using coarse-to-fine strategies in both space and frequency. The algorithm is shown to be robust compared to typical delay-based estimators and fast enough for real-time implementation. Its performance can be further improved by using constraints from computer vision},
	keywords = {active speech source localization, array signal processing, Computer interfaces, Delay effects, delay estimation, delay-based estimators, dual coarse-to-fine search, Frequency, Inverse problems, Laboratories, multiple speech sound sources, Position measurement, real-time implementation, Sensor arrays, Signal processing algorithms, space, speech, Speech processing, Teleconferencing, videoconferencing systems},
	isbn = {0-7803-7041-4},
	doi = {10.1109/ICASSP.2001.940366},
	author = {Duraiswami, Ramani and Zotkin,Dmitry N and Davis, Larry S.}
}
