摘要
基于麦克风阵列的声源定位技术在通信、语音处理等领域得到广泛的应用。本文从声音传播的基本原理出发,推导出了精确的相对幅度衰减因子,获得了更加准确的信号传播模型。利用该模型并结合子空间算法的思想,提出了适用于任意拓扑结构的麦克风阵列的近场宽带三维声源定位算法。仿真结果表明,该算法在一维均匀直线阵、二维均匀圆阵和三维均匀球面阵中,均能够得到较好的定位效果。
The speech source localization technology based on microphone array has been abroad applied to communication and speech signal processing. In this paper, an accurate near-field signal model and a precise factor about relative amplitude attenuation are obtained from the diffusing principle of speech, and a near-field bandwidth three-dimensional （3D） algorithm has been proposed by combining this model and suhspace methods, which can be used in all kinds of topology for microphone array. Simulation results show the high performance of the localization is gotten when the proposed algorithm is used in uniform linear array, planar uniform circle array and 3D uniform spherical surface array.
出处
《信号处理》
CSCD
北大核心
2007年第2期231-234,共4页
Journal of Signal Processing
基金
华为高校科技基金项目(NO.YJCB2004013MU)
关键词
麦克风阵列
近场DOA估计
子空间方法
语音信号处理
Microphone array
DOA estimation in near field
Subspaee method
Speech signal processing
