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 for 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)
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12. A speech recognition method comprising the steps of:
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extracting one speech recognition dictionary from a plurality of speech recognition dictionaries having a plurality of pieces of reference speech information;
comparing the reference speech information in an extracted speech recognition dictionary with an input speech;
extracting another speech recognition dictionary different from the one speech recognition dictionary after completing a comparison with the reference speech information due to the speech recognition dictionary extracted; and
updating the reference speech information in the extracted speech recognition dictionary as reference speech information to be compared and comparison is made between updated reference speech information and the input speech to thereby recognize the speech inputted.
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Specification