Design and implementation of an acoustic source localization system based on 4-element cross-array

In this paper, an acoustic source localization method based on 4-element cross-array is presented, and an acoustic source localization system is designed. Four acoustic sensors are employed to collect the acoustic source signal, after several steps as amplifying, processing, AD conversion, generalized cross-correlation function method is used to compute the time difference of the signal arrival to the four sensors, then the position of the acoustic source can be determined. Experiments show that our system can achieve good performance in both speed and accuracy. The acoustic source localization system can be incorporated into a motion estimation system with low cost inertial sensors to increase estimation accuracy.