Speech Enhancement Using Robust Generalized Sidelobe Canceller with Multi-Channel Post-Filtering in Adverse Environments ⁄

In this paper, we propose a speech en- hancement algorithm which has the feature of interaction between adaptive beamforming and multi-channel post- flltering. A novel subband feedback controller based on speech presence probability is applied to Generalized Side- lobe Canceller algorithm to obtain a more robust adap- tive beamforming in adverse environment and alleviate the problem of signal cancellation. A multi-channel post- flltering is used not only to further suppress difiuse noises and some transient noises, but also to give the speech pres- ence probability information in each subband. Experimen- tal results show that the proposed algorithm achieves con- siderable improvement on signal preservation of the desired speech in adverse noise environments over the comparative algorithms.