传声器直线阵列在声源定位问题中的误差分析  

Error analysis of source location based on equispaced linear array

作　　者：周成胜[1] 王新喆[1] 孙胜红[1] 肖婧[1] 赵珊珊[1] 

机构地区：[1]中广电广播电影电视设计研究院,北京100045

出　　处：《电声技术》2016年第4期26-28,共3页Audio Engineering

摘　　要：针对传声器均匀直线阵列在近场声源定位中的应用,从理论上推导了声源方位角和距离对阵列定位误差的影响,然后分析了均匀直线阵列的局限性:声源与直线阵列的夹角越小,误差越大;声源距离直线阵列越远,误差越大;当近场信号变成远场信号时,此时只能计算得到声源信号的方位角,而不能获得距离信息。最后使用计算机仿真的方法来验证了推导结果。Microphone array is widely used to study sound source localization problems. For microphone equispaced linear ar- ray applications in the near field source localization, firstly, theoretically deduce the effects of sound source azimuth and distance on the array positioning error, and then analyzed equispaced linear array＇ s limitations： the smaller azimuth, the bigger error; the farther the sound source from the array, the greater the error; when the near-field signal become into far- field signal which can only calculate the azimuth of the sound source signals, distance information can not be obtained. Finally, the simulation result prove the theoretically results.

关 键 词：传声器阵列 声源定位 直线阵列 误差分析 

分 类 号：TN912.2[电子电信—通信与信息系统]