Computational modeling demonstrates improved duration control in synthesized speech, indicating enhanced acoustic naturalness through statistically corrected state duration probability density...
This paper describes the explicit modeling of a state duration's probability density function in HMM-based speech synthesis. We redefine, in a statistically correct manner, the probability of staying in a state for a time interval used to obtain the state duration PDF and demonstrate improvements in the duration of synthesized speech.
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Zen et al. (2007) studied this question.
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