TDOA声源定位中阵列阵型对误差的影响

Influence of array on error in TDOA sound source location

摘要:

在麦克风阵列声源定位中，不同阵列阵型及声源频率高低均对定位结果产生影响，探讨上述不同变量对定位结果产生误差的定量分析。使用到达时间差测量(TDOA)算法，运用16个麦克风分别组成十字型、同心圆、方型、L型、Y型阵列，探讨不同形状的麦克风阵列在不同频率声源下所产生的定位误差，并在Matlab上进行仿真分析，尝试得到较为准确的声源定位结果，提出一种误差最小的用于麦克风阵列声源定位的同心圆阵列阵型。

Abstract:

In the microphone array sound source localization,different microphone arrays and different source frequencies will have certain impacts on the results. In this paper,Time Difference of Arrival(TDOA) method is employed, and 16 microphones are utilized to form cross array, concentric circle array, square array, L-type array and Y-type array respectively. The positioning errors of microphone array with different shapes under different frequency sources are discussed. Simulation analysis is carried out on Matlab to obtain more accurate sound source positioning results. A concentric circle array for sound source location of microphone array is proposed, which has the smallest error .