Speech recognition method and apparatus
First Claim
1. A speech recognition apparatus comprising:
- a hierarchical dictionary section stored with a plurality of speech recognition dictionaries having a plurality of reference speech signals with mutual association in a hierarchical fashion;
extracting means for extracting a proper speech recognition dictionary from said hierarchical dictionary section;
list storing means for storing the extracted speech recognition dictionary;
speech input means for inputting a speech;
recognizing means for comparing an input speech with the reference speech information in the speech recognition dictionary stored in said list storing means to recognize the speech;
wherein said extracting means extracts a speech recognition dictionary belonging to a lower hierarchical level of the reference speech information corresponding to the speech recognized and said list storing means updates and stores the extracted speech recognition dictionary, said speech recognition apparatus;
wherein reference speech information representative of hierarchical-level skipping is prepared in a predetermined speech recognition dictionary so that, when said recognizing means recognizes a speech input corresponding to the reference speech information representative of hierarchical-level skipping, said extracting means extracts, and updates and stores to said list storing means, a speech recognition dictionary belonging to a lower hierarchical level of the reference speech information stored in said list storing means.
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Abstract
Concerned is speech recognition that reference speech information is extracted from a plurality of speech recognition dictionaries in a hierarchical structure to compare between extracted reference speech information and an inputted speech thereby recognizing the speech. Reference speech information representative of hierarchical-level skipping is prepared in a predetermined speech recognition dictionary so that, when recognizing an input corresponding to the reference speech information representative of hierarchical-level skipping, speech recognition is carried out by extracting a part of speech recognition dictionary belonging to a lower hierarchical level of the reference speech information being compared.
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Citations
12 Claims
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1. A speech recognition apparatus comprising:
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a hierarchical dictionary section stored with a plurality of speech recognition dictionaries having a plurality of reference speech signals with mutual association in a hierarchical fashion;
extracting means for extracting a proper speech recognition dictionary from said hierarchical dictionary section;
list storing means for storing the extracted speech recognition dictionary;
speech input means for inputting a speech;
recognizing means for comparing an input speech with the reference speech information in the speech recognition dictionary stored in said list storing means to recognize the speech;
wherein said extracting means extracts a speech recognition dictionary belonging to a lower hierarchical level of the reference speech information corresponding to the speech recognized and said list storing means updates and stores the extracted speech recognition dictionary, said speech recognition apparatus;
wherein reference speech information representative of hierarchical-level skipping is prepared in a predetermined speech recognition dictionary so that, when said recognizing means recognizes a speech input corresponding to the reference speech information representative of hierarchical-level skipping, said extracting means extracts, and updates and stores to said list storing means, a speech recognition dictionary belonging to a lower hierarchical level of the reference speech information stored in said list storing means. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A speech recognition apparatus comprising:
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a hierarchical dictionary section stored with a plurality of speech recognition dictionaries having a plurality of pieces of reference speech information;
extracting means for extracting one dictionary of among the plurality of speech recognition dictionaries;
list storing means for storing the dictionary extracted, speech input means for inputting a speech;
an input-speech storing means far storing an input speech;
recognizing means for sequentially comparing between a speech stored in said input-speech storing means and the reference speech information stored in said list storing means to recognize similar reference speech information; and
similar-word storing means for storing the similar pieces of the reference speech information;
wherein after said recognizing means completes a comparison between all pieces of the reference speech information belonging to the dictionaries stored in said list storing means and a speech stored in said input-speech storing means, said extracting means extracts from the speech recognition dictionary an unextracted dictionary to be updated and stored by said list storing means;
wherein said recognizing means compares between reference speech information belonging to a dictionary updated and stored to said list storing means and the speech stored in said input-speech storing means to recognize similar reference speech information; and
wherein said similar-word storing means additionally stores the similar reference speech information newly recognized. - View Dependent Claims (9)
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10. A speech recognition method that reference speech information is extracted from a plurality of speech recognition dictionaries in a hierarchical structure to compare extracted reference speech information with an input speech thereby recognizing the speech, said method comprising the steps of:
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preparing reference speech information representative of hierarchical-level skipping in a predetermined speech recognition dictionary so that, when recognizing an input of a speech corresponding to the reference speech information representative of hierarchical-level skipping; and
extracting a part of the speech recognition dictionary belonging to a lower hierarchical level of reference speech information being compared to perform speech recognition. - View Dependent Claims (11, 12)
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Specification