Large-vocabulary speech recognition method, apparatus, and medium based on multilayer central lexicons
AssigneeSamsung Electronics Co., Ltd.
InventorsNam Hoon Kim, In Jeong Choi, Ick Sang Han, Sang Bae Jeong
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Abstract
A speech recognition method including: layering a central lexicon in a tree structure with respect to recognition-subject vocabularies; performing multi-pass symbol matching between a recognized phoneme sequence and a phonetic sequence of the central lexicon layered in the tree structure; and selecting a final speech recognition result via a Viterbi search process using a detailed acoustic model with respect to candidate vocabularies selected by the multi-pass symbol matching.
Claims17
A speech recognition method comprising:
- layering a central lexicon in a tree structure with respect to recognition-subject vocabularies;
- performing multi-pass symbol matching between a recognized phoneme sequence and a phonetic sequence of the central lexicon layered in the tree structure;
- and
- selecting a final speech recognition result via a Viterbi search process using a detailed acoustic model with respect to candidate vocabularies selected by the multi-pass symbol matching.
A computer readable recording medium in which a program for executing a speech recognition method is recorded, the method comprising:
- layering a central lexicon in a tree structure with respect to recognition-subject vocabularies;
- performing multi-pass symbol matching between a recognized phoneme sequence and a phonetic sequence of the central lexicon layered in the tree structure;
- and
- selecting a final speech recognition result via a Viterbi search process using a detailed acoustic model with respect to candidate vocabularies selected by the multi-pass symbol matching.
A speech recognition apparatus comprising:
- a multi-pass symbol matching unit performing multi-pass symbol matching between a recognized phoneme sequence and a phonetic sequence of a central lexicon layered in a tree structure;
- and
- a detailed matching unit performing detailed matching to select a speech recognition result using detailed acoustic model with respect to candidate vocabulary sets selected by the multi-pass symbol matching.
A speech recognition method comprising:
- performing multi-pass symbol matching between a recognized phoneme sequence and a phonetic sequence of a central lexicon layered in a tree structure with respect to recognition-subject vocabularies;
- and
- selecting a final speech recognition result via a Viterbi search process using a detailed acoustic model with respect to candidate vocabularies selected by the multi-pass symbol matching.
Dependencies are inferred from the claim text.