Abstract Continuous speech recognition unit recognizes continuous speech associated with the standard patterns of the given units of recognition. Said unit comprises a standard pattern memory means (1) for storing observation likelihoods and transition probabilities as said standard pattern, a similarity computing means (2) for computing similarity between speech patterns inputted to the continuous speech recognition unit and the standard pattern in the interval between respective points in time, a cumulative value computing means for computing, as a cumulative value, the product of the sum of the products of cumulative values of said similarities obtained for all or part of matching passes on said speech pattern of up to a certain point in time and the transition probability, and the observation likelihood obtained for said speech pattern, a cumulative value memory means (23) for storing said cumulative values, a matching pass memory means (24) for storing the matching pass which maximizes the cumulative value at the current point in time, and a result processor means (28) for defining result of recognition which corresponds to the most probable state from said stored cumulative value and matching pass.
Continuous speech recognition unit for recognizing continuous speech associated with the standard patterns of the given units of recognition comprising: a standard pattern memory means for storing observation distributions and transition probabilities as said standard pattern; a similarity computing means for computing similarity between speech patterns inputted to the continuous speech recognition unit and the standard pattern in the correspondence between respective points in time; a cumulative value computing means for computing, as a cumulative value, the product of the sum of the cumulative values of said similarities obtained for all or part of matching passes on said speech pattern of up to a certain point in time; a cumulative value memory means for storing said cumulative values; a matching pass memory means for storing the matching pass which maximizes the cumulative value; and a result processor means for defining result of recognition which corresponds to the most probable state from said stored cumulative value and matching pass.
Claim 2
Dependent Claim
158 words
Continuous speech recognition unit for recognizing continuous speech associated with the standard patterns of the given units of recognition comprising: a standard pattern memory means for storing observation distributions and transition probabilities as said standard pattern; a similarity computing means for computing similarity between speech patterns inputted to the continuous speech recognition unit and the standard pattern in the correspondence between respective points in time; a cumulative value computing means for computing, as a cumulative value, the product of the sum of the cumulative values of said similarities obtained for all or part of matching passes on said speech pattern of up to a certain point in time; a cumulative value memory means for storing said cumulative values; a matching pass memory means for storing the matching pass which maximizes the cumulative value; and a result processor means for defining result of recognition which corresponds to the most probable state from said stored cumulative value and matching pass.
Claim 3
Dependent Claim
48 words
Continuous speech recognition unit as claimed in claim 1, wherein said cumulative value computing means computes, as said cumulative value, the product of the sum of the cumulative values of said similarities obained for matching passes on said speech pattern of up to a certain point in time.
Claim 4
Dependent Claim
70 words
Continuous speech recognition unit as claimed in claim 1, wherein said cumulative value computing means computes, as said cumulative value, the product of the sum of the cumulative values of said similarities obtained for matching passes stored in the matching pass memory wherein start positions of units of recognition obtained from said matching passes are coincident with positions of start positions for the matching passes which give the maximum similarities.
Claim 5
Dependent Claim
64 words
Continuous speech recognition unit as claimed in claim 1, wherein said cumulative value computing means computes, as said cumulative value, the product of the sum of the cumulative values of said similarities obtained for matching passes wherein all or part of recognition results estimated by the results processor means are coincident with the recognition result for the matching passes which give the maximum similarities.
Claim 6
Dependent Claim
19 words
Continuous speech recognition unit as claimed in any of claims 1 to 4, wherein said similarity is forward likelihood.
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