Yunxin Zhao Rong Hu Xiaolong Li Speedup convergence and reduce noise for enhanced speech separation and recognition. 1235-1244 2006 14 IEEE Transactions on Audio, Speech & Language Processing 4 http://doi.ieeecomputersociety.org/10.1109/TSA.2005.860833 db/journals/taslp/taslp14.html#ZhaoHL06