Acoustic source localization algorithm based on time difference of arrivals（TDoA） in the real acoustic field environment is studied from the systematic point of view.Acoustic source localization system based on microphone array is constructed.LabVIEW is applied to develop the corresponding software

which makes the signal acquisition and processing convenient.Generalized mutual correlation function is used to estimate the time delay of arrival

and four-element planar crossing array model is also utilized to set up equation set and implement localization.The system possesses strong ability of data analyzing and processing with friendly GUI

timely tracking the changing location of the acoustic source.