Method and system for limiting the number of words searched by a voice recognition system
First Claim
1. A method for limiting the number of words searched by a voice recognition system on a user speech input, the voice recognition system having a predetermined language model containing a first plurality of words corresponding to all words recognizable by the voice recognition system in a predetermined application having at least one mode, wherein the predetermined language model further including a list of all states corresponding to each of the first plurality of words contained in the predetermined language model, the method comprising:
- determining a current active mode of the application of the voice recognition system;
determining a subvocabulary of active words containing a second plurality of the first plurality of words based on the current active mode of the application; and
performing a search on the subvocabulary of active words so as to reduce the computation time of the recognition of the user speech input.
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Abstract
A method and system for limiting the number of words searched by a voice recognition system having a predetermined language model containing a first plurality of words corresponding to all words recognizable by the voice recognition system in a predetermined application having at least one mode. The predetermined language model includes a list of all states that correspond to each of the first plurality of words. Based on the current mode of the application of the voice recognition system a subvocabulary of active words containing a second plurality of the first plurality of words is determined. A signal identifying the subvocabulary of active words is transferred to a recognizer which turns on only those states in the predetermined language model corresponding to the active words. Finally, a search is performed on a portion of the predetermined language model according to the subvocabulary of active words so that the computation time of the voice recognition system is reduced.
47 Citations
12 Claims
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1. A method for limiting the number of words searched by a voice recognition system on a user speech input, the voice recognition system having a predetermined language model containing a first plurality of words corresponding to all words recognizable by the voice recognition system in a predetermined application having at least one mode, wherein the predetermined language model further including a list of all states corresponding to each of the first plurality of words contained in the predetermined language model, the method comprising:
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determining a current active mode of the application of the voice recognition system; determining a subvocabulary of active words containing a second plurality of the first plurality of words based on the current active mode of the application; and performing a search on the subvocabulary of active words so as to reduce the computation time of the recognition of the user speech input. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A system for limiting the number of words searched by a voice recognition system on a user speech input, the voice recognition system having a predetermined language model containing a first plurality of words corresponding to all words recognizable by the voice recognition system in a predetermined application having at least one mode, wherein the predetermined language model further including a list of all states corresponding to each of the first plurality of words contained in the predetermined language model, the system comprising:
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means for determining a current active mode of the application of the voice recognition system; means for determining a subvocabulary of active words containing a second plurality of the first plurality of words based on the current active mode of the application; and means for performing a search on the subvocabulary of active words so as to reduce the computation time of the recognition of the user speech input. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification