Integrated MMSE-FW-LA scheme for robust ASR at low SNRs

Integrated MMSE-FW-LA scheme for robust ASR at low SNRs

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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.


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