Integrated MMSE-FW-LA scheme for robust ASR at low SNRs
Tao Xu, Zhigang Cao · Electronics Letters · 2002
A novel feature weight (FW) algorithm and an integrated scheme called MMSE-FW-LA are proposed. The scheme combines the minimum mean square error (MMSE)-based enhancement, the FW algorithm and the log-add (LA) model compensation. Experimental evaluations show that this scheme can improve the recognition performance significantly, especially at low SNRs.