基于波束成形理论的传声器阵列声场仿真分析

摘要

Based on the beam forming technology , it utilizes the microphone array layout to attach information of the specific acoustic field , analyzes the visualization and identification of noise sources .It shows the various in-fluences of different microphone array layout , demonstrates the process and analysis of different layout simulation with rational hypothesis among linear , rectangle, circle and semi-circle via Matlab.Considering the identifica-tion accuracy , the number of microphones required and graphic symmetry , the simulation result shows that the circle layout is highly effectivs .%基于用传声器阵列测量空间声场信息的波束成形技术，在声场可视化和噪声源识别中得到了广泛的研究与应用。利用波束成形技术分析噪声源时，不同的传声器阵列布局会对分析结果产生不同影响。在合理化假设的条件下，基于MATLAB软件对线性、矩形、圆形、半圆形4种不同阵列的处理效果进行仿真，并对仿真结果进行分析。比较识别精度、传声器数目和图形对称性等综合因素，得出圆形阵列具有最好综合效果的结论。