Tracking of Speaker Direction by Integrated Use of Microphone Pairs in Equilateral-Triangle(<Special Section>Adaptive Signal Processing and Its Applications)

概要

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In this report, we propose a tracking algorithm of speaker direction using microphones located at vertices of an equilateral triangle. The method realizes tracking by minimizing a performance index that consists of the cross spectra at three different microphone pairs in the triangular array. We adopt the steepest descent method to minimize it, and for guaranteeing global convergence to the correct direction with high accuracy, we alter the performance index during the adaptation depending on the convergence state. Through some computer simulation and experiments in a real acoustic environment, we show the effectiveness of the proposed method.
社団法人電子情報通信学会の論文
2005-03-01