基于四元交叉阵列的声源定位

Acoustic Source Localization Based on 4-Element Cross Array

本文提出了一种基于四元交叉阵的声源定位方法,并设计了声源定位系统。利用4个声源传感器采集声源信号,经过放大、处理、AD转换等步骤,采用广义互相关函数法计算信号到达4个传感器的时间差,从而确定声源的位置。实验表明,该系统在速度和精度上都能达到较好的性能。该声源定位系统可以与具有低成本惯性传感器的运动估计系统相结合,以提高估计精度。

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 amplif ying,processing,AD conversion,generalized crosscorrelation 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.