Blind Beamforming for Microphone Array Based Speech Enhancement
基于盲波束形成的麦克风阵列语音增强方法

Considering the bad effect of steering vector errors on speech enhancement performance,a new blind beamforming based speech enhancement method is introduced in this paper.The blind beamforming combines fourth-order cross cumulant and Linear Constrained Minimum Variance (LCMV) beamformer,which makes it robust to the steering vector.A multi-channel post-processor is then used to suppress the residual nonstationary noise.Simulations results demonstrate that the proposed method exhibits good noise suppression performance even with the unknown prior knowledge about direction of arrive with respect to speech signal.