A practical beamformer-postfilter system for adaptive speech enhancement in non-stationary noise environments

In this contribution we present an adaptive beamformer-postfilter system which can be used to suppress non-stationary noises. The emphasis lies on the spatial filtering property of the proposed postfilter. Due to the spatial characteristic of the postfilter, an interfering speaker in background noise can be suppressed effectively while maintaining the quality of the desired speech using only two microphones.