Fast moving sound source localization method based on time difference of arrival

In order to localize moving sound source fast using time difference of arrival method,a fast moving time difference of arrival method is established based on time difference of arrival localization method,time-domain Doppler effect elimination method and simplex search algorithm.This method transforms the uniform moving sound source localization problem into the search of the minimum error value in the assumed plane,and then the simplex algorithm is used to search for the value point to avoid global search and reduce the amount of calculation,which improves the real-time performance of localization.This method breaks through the limitation that the time difference of arrival method can be used only for static and quasi-static sound source localization,and solves the problem of complicated calculation process caused by Doppler effect elimination.It can realize the moving sound source localization with only four microphones.The effectiveness of the proposed method is validated by both simulations and experiments.This study provides a simple and efficient method for the identification of short-time sound signals and the capture of transient moving sound sources.