EURASIP Journal on Advances in Signal Processing
Volume 2008 (2008), Article ID 849246, 10 pages
doi:10.1155/2008/849246
Research Article
A Method for Source-Microphone Range Estimation in Reverberant Environments Using Arrays of Unknown Geometry
Department of Electronic and Electrical Engineering, School of Engineering, Trinity College, Dublin, Ireland
Received 18 December 2006; Revised 24 April 2007; Accepted 23 September 2007
Academic Editor: Joe C. Chen
Copyright © 2008 Denis McCarthy and Frank Boland. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
This paper proposes a technique for determining the distance between a sound source and the microphones in an array. The proposed “Range-Finder” algorithm is robust in the presence of reverberation and, in contrast with previously published source-localization techniques, does not require knowledge of the relative positions of the microphones. We discuss the factors affecting the accuracy of our range estimates and present the results of experiments using simulated and real data
to demonstrate the efficacy of our approach.