摘要
为了简化使用话筒阵列对空间声源的定位,文中提出了一种简单的三维空间声源定位方法.该方法在直角坐标轴上放置4个麦克风,声源到达麦克风对之间的时间差可以由测量接收信号的互相关函数得到.由到达时间差和一个近似的锥模型可以很容易得到声源相对于3个坐标轴的方位角,从而转换成极坐标系中的方位角和仰角.相比较已有方法:该方法具有简单易行、计算量小的显著优点.
In order to simplify the spatial localization of sound sources using microphone array, a simple special localization method of 3D sound sources is proposed, in which four microphones are arranged in rectangular coordinate axes. In the preposed method, the sound arrival time difference between different microphone pairs is analyzed by measuring the cross-correlation function of the received signals, and the direction angles of the sound source related to three axes can be easily derived according to the time difference by using an approximated cone model. The direction angles are then converted into the azimuth and elevation in polar coordinate system. As compared with the existing methods, the proposed method is an easy way with low computational complexity.
出处
《华南理工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2007年第B10期70-72,共3页
Journal of South China University of Technology(Natural Science Edition)
关键词
声源定位
互相关函数
直角坐标系
极坐标系
sound loealization
cross-correlation function
rectangular coordinate system
polar coordinate system
