基于双传声器对的多声源二维定位跟踪算法

2-D localization and tracking of multiple sound sources using two microphone pairs

提出一种房间混响声场环境下的多声源二维定位跟踪算法。研究了基于盲源分离的时延估计,以及联合空间分布的多个传声器对的定位算法。用高斯似然函数解决在多源、多维情况下声源定位的时延匹对模糊问题,使之能够用双传声器对实现对多个声源的二维定位,结合粒子滤波算法实现对多个运动声源的跟踪。仿真实验验证了提出算法的有效性。

A new algorithm of multi-dimensional localization and tracking of multiple sources in reverberant acoustic environments is proposed. The TDOA estimation based on blind source separation and fusion of multiple microphone pairs for localization are investigated. TDOA-based acoustic source localization approaches suffer from a pairing problem in the case of multiple dimensions and multiple sources. In this paper, one solution was proposed based on a Gaussian likelihood function to pair TDOAs,which can be used to localize multiple moving sources in two dimensions only using two microphone pairs. Moreover, the proposed method is combined with a particle filter for tracking multiple moving sources. Simulation experimental results demonstrate the effectiveness of the proposed scheme.