A method for source-microphone range estimation, using arrays of unknown geometry, in reverberant room environments

This paper proposes a technique for determining the distance between a sound source and the microphones in an ad-hoc distributed 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 present the results of experiments using simulated and real data to demonstrate the efficacy of our approach.