Application of weighted finite-state transducers to improve recognition accuracy for dysarthric speech
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چکیده
Standard speaker adaptation algorithms perform poorly on dysarthric speech because of the limited phonemic repertoire of dysarthric speakers. In a previous paper, we proposed the use of “metamodels” to correct dysarthric speech. Here, we report on an improved technique that makes use of a cascade of Weighted Finite-State Transducers (WFSTs) at the confusionmatrix, word and language levels. This approach outperforms both standard MLLR and metamodels.
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تاریخ انتشار 2008