针对目前国内外噪声定位装置体积庞大、价格昂贵的问题，开发了一套便携式声源定位系统。系统程序由MATLAB软件编写，操作界面由Microsoft.NET平台开发，四元立体阵列配合牛顿迭代定位算法以更小的搜索步长和空间结构弥补了因声传感器数量减少带来的精度降低的不足。试验结果表明，系统可以实现空间任意方位的三维声源定位，平均相对误差为11.75%，能满足工业领域声发射检测的要求。

This paper discussed current development state of noise localization devices, which were characteristic of large size and high cost. The authors have developed a new portable sound source localization system which is using MATLAB as a programming language and having operator interface integrated by Microsoft.NET services. With four-dimensional array and Newton iterative algorithm, the system has made remedy for the decrease in accuracy due to the small number of sensors with smaller search steps and space structure. Experiments have shown that the system can realize three-dimensional sound source localization in any spatial orientation with an average relative error of 11.75%, which can meet the requirements of industrial acoustic emission detection.