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Monday, July 8 • 18:10 - 18:30
LOCALIZATION OF SOUND SOURCE BY USING DELAY ESTIMATORS ON SIGNALS FROM MICROPHONE ARRAYS

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Sound source localization (SSL) for real-world application demands on-field experiments. The effect of sampling frequency, spacing between microphones, total duration for which the data is recorded, different microphone array configuration, and microphone position are important for the estimation of position of a sound source. In order to realize these aspects, laboratory exper-iments were carried out to ascertain the limits of these criteria. Cross-correlation (CC) and gener-alized cross-correlation (GCC) methods are common methods for estimation of time delay be-tween pairs of microphones. The performance of cross-correlation method significantly de-creased inside a reverberant indoor space. Estimation of the time delay between two received signals was carried out by using three and four microphones of different configurations. From the estimated time delay, fixed stationary acoustic source localization was done by solving a nonlinear hyperbolic range difference equation. Experimentally obtained TDOA data were vali-dated with the real theoretical data (in a known single source scenario) in order to show the ac-curacy of the proposed methods and consequently locating the source by providing a known passive source position.


Monday July 8, 2019 18:10 - 18:30 EDT
Westmount 3