麦克风阵列声源定位研究与ARM实现

以EasyARM2100实验板为硬件平台,设计了一个可以在二维平面内对声源进行实时定位的实验系统。系统软件部分采用了基于到达时延估计双步定位法,并使用二次相关时延估计法和三元阵几何定位法分别对时延和声源的位置进行估计。通过在系统上的大量试验测试,表明系统硬件性能良好,软件定位算法实现简单,运算量小,精度较高,有较强的抗混响和抗噪声能力,可用在实时定位系统中。

Research and ARM Implementation of Sound Source Location Based on Microphone Arrays

Based on an EasyRAM2100 experimental plate, a two- dimensional and real-time sound source location system is designed. The critical section of system software includes two steps： the part of time delay estimation adopts second correlation method, and the part of source location adopts ternary linear array location method. System test results show that the system has advantages such as good hardware performance, simple implementation of software location algorithm, small amount of computation and high accuracy. At the same time, the system has better anti-reverberation and anti-noise capability. So it can be used in real-time location system.