Speech synthesis device
First Claim
1. A rule-based speech synthesis device which synthesizes arbitrary speech by selecting and concatenating previously stored speech synthesis units and controlling prosodic information, comprising a phoneme duration time setting means which estimates and controls the closing interval length of a phoneme having a closing interval, independently of the vowel length and consonant length, wherein said phoneme duration time setting means comprises:
- a phoneme type judgement means that judges the type of a phoneme with respect to the input phoneme symbol sequence,a vowel length determining means comprising a vowel length estimation means and a vowel length learning means,a consonant length determining means comprising a consonant length estimation means and a consonant length learning means, anda closing length determining means comprising a closing length estimation means and a closing length learning means,and wherein said phoneme type judgement means operates said vowel length estimation means or consonant length estimation means depending on whether the phoneme in question is a vowel or a consonant, and if it is judged to be a consonant, it judges whether or not it anteriorly has a closing interval and if it anteriorly has a closing interval then it operates a closing length estimation means.
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Accused Products
Abstract
The principal object of this invention is to provide a suitable control method for closing length with respect to phonemes (such as unvoiced plosive consonants) having a closing interval, and as a result an improved rule-based speech synthesis device is provided. A phoneme type judgement part 201 judges whether the phoneme in question is a vowel or consonant and, in the case of a consonant, judges whether or not it is a consonant that anteriorly has a closing interval. As a result, it operates a vowel length estimation part 202 when it judges that the phoneme is a vowel and operates a consonant length estimation part 205 when it judges that the phoneme is a consonant, and when it has judged that this phoneme anteriorly has a closing interval, it operates a closing length estimation part 208, whereby the respective time lengths are estimated. After that, the estimated time lengths are set by vowel length setting part 203, consonant length setting part 206 and closing length setting part 209, respectively.
17 Citations
5 Claims
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1. A rule-based speech synthesis device which synthesizes arbitrary speech by selecting and concatenating previously stored speech synthesis units and controlling prosodic information, comprising a phoneme duration time setting means which estimates and controls the closing interval length of a phoneme having a closing interval, independently of the vowel length and consonant length, wherein said phoneme duration time setting means comprises:
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a phoneme type judgement means that judges the type of a phoneme with respect to the input phoneme symbol sequence, a vowel length determining means comprising a vowel length estimation means and a vowel length learning means, a consonant length determining means comprising a consonant length estimation means and a consonant length learning means, and a closing length determining means comprising a closing length estimation means and a closing length learning means, and wherein said phoneme type judgement means operates said vowel length estimation means or consonant length estimation means depending on whether the phoneme in question is a vowel or a consonant, and if it is judged to be a consonant, it judges whether or not it anteriorly has a closing interval and if it anteriorly has a closing interval then it operates a closing length estimation means. - View Dependent Claims (2, 3, 4, 5)
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Specification