Speech recognition apparatus, speech recognition method, and speech recognition robot
First Claim
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1. A speech recognition apparatus comprisinga storage medium storing a relationship between a recognition reliability and a correct answer rate for every phoneme;
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receive speech;
recognize phonemes of the speech and generate a first phoneme sequence representing corrected speech;
match the first phoneme sequence with a second phoneme sequence representing original speech so as to create a pair of a first phoneme extracted from the first phoneme sequence and a second phoneme extracted from the second phoneme sequence; and
replace the second phoneme with the first phoneme when the second phoneme differs from the first phoneme, a predetermined recognition reliability of the first phoneme is higher than a predetermined recognition reliability of the second phoneme, and a correct answer rate of the first phoneme determined based on the relationship stored in the storage medium is higher than a predetermined value.
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Abstract
A speech recognition apparatus includes a speech input unit that receives input speech, a phoneme recognition unit that recognizes phonemes of the input speech and generates a first phoneme sequence representing corrected speech, a matching unit that matches the first phoneme sequence with a second phoneme sequence representing original speech, and a phoneme correcting unit that corrects phonemes of the second phoneme sequence based on the matching result.
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5 Claims
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1. A speech recognition apparatus comprising
a storage medium storing a relationship between a recognition reliability and a correct answer rate for every phoneme; - and
a processor programmed with instructions that, when executed, cause the processor to; receive speech; recognize phonemes of the speech and generate a first phoneme sequence representing corrected speech; match the first phoneme sequence with a second phoneme sequence representing original speech so as to create a pair of a first phoneme extracted from the first phoneme sequence and a second phoneme extracted from the second phoneme sequence; and replace the second phoneme with the first phoneme when the second phoneme differs from the first phoneme, a predetermined recognition reliability of the first phoneme is higher than a predetermined recognition reliability of the second phoneme, and a correct answer rate of the first phoneme determined based on the relationship stored in the storage medium is higher than a predetermined value. - View Dependent Claims (2, 3, 4)
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5. A speech recognition method, comprising:
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storing, in a storage medium, a relationship between a recognition reliability and a correct answer rate for every phoneme; receiving speech; recognizing phonemes of the speech; generating a first phoneme sequence representing corrected speech; matching the first phoneme sequence with a second phoneme sequence representing original speech so as to create a pair of a first phoneme extracted from the first phoneme sequence and a second phoneme extracted from the second phoneme sequence; and replacing the second phoneme with the first phoneme when the second phoneme differs from the first phoneme, a predetermined recognition reliability of the first phoneme is higher than a predetermined recognition reliability of the second phoneme, and a correct answer rate of the first phoneme determined based on the relationship stored in the storage medium is higher than a predetermined value.
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Specification