一种改进的声源目标成型波定位方法的研究

Research on an Improved Method of Beamforming Sound Source Localization

通过对成型波定位方法进行研究,提出了一种改进的成型波定位方法.该方法通过预先测量无信号时的噪音水平,来抑制某些被噪音干扰较严重的频带;分析了回响干扰的特性,利用它的脉冲性和指数衰减性,提出了去除回音干扰的有效方法;对成型波的定位方法进一步做频域加权.实验证明该方法达到了良好的定位效果.

An improved method ofbeamforming sound source localization was proposed through research on beamforming. The method through measuring noise level without signal, preventing band serious interfered by noise, analysing the characteristics of reverberate interference, putting forward the effective method to remove echo interference using the pulse and exponential decay. The beamforming method was further weighted in frequency domain. The experiment result proved that the improved sound source localization method is efficient.