Robust speech recognition using beamforming with adaptive microphone gains and multichannel noise reduction. - Zhao, Shengkui; Xiao, Xiong; Zhang, Zhaofeng; Nguyen, Thi Ngoc Tho; Zhong, Xionghu; Ren, Bo; Wang, Longbiao; Jones, Douglas L.; Chng, Engsiong; Li, Haizhou (2015)