Patent ID: 8918318
Filing Date: 2014-12-23
Classification: G10L

Abstract:
1. An extended recognition dictionary learning device comprising: an utterance variation data calculating section configured to compare an acoustic model sequence obtained from a result of speech recognition for each of a plurality of speakers and a correct acoustic model sequence to calculate a correspondence between the models as utterance variation data; an utterance variation data classifying section configured to classify the calculated utterance variation data into widely appearing utterance variations unevenly appearing utterance variations, the widely appearing utterance variations appearing independently of speakers in the calculated utterance variation data, and the unevenly appearing utterance variations appearing dependently of speakers in the calculated utterance variation data; and a recognition dictionary extending section configured to define a plurality of utterance variation sets by combining the classified utterance variations and to generate a plurality of extended recognition dictionaries corresponding to the plurality of utterance variation sets by extending a recognition dictionary for each utterance variation set according to the utterance variations included in each utterance variation set, wherein the plurality of utterance variation sets comprise: a common utterance variation set that consists of only widely appearing utterance variations; and utterance variation sets each of which is generated by combining widely appearing utterance variations and unevenly appearing utterance variations.