Probabilistic Concatenation Modeling for Corpus-Based Speech Synthesis

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概要

• 論文の詳細を見る

• The measure of the goodness, or inversely the cost, of concatenating synthesis units plays an important role in concatenative speech synthesis. In this paper, we present a probabilistic approach to concatenation modeling in which the goodness of concatenation is measured by the conditional probability of observing the spectral shape of the current candidate unit given the previous unit and the current phonetic context. This conditional probability is modeled by a conditional Gaussian density whose mean vector has a form of linear transform of the past spectral shape. Decision tree-based parameter tyingis performed to achieve robust trainingthat balances between model complexity and the amount of training data available. The concatenation models are implemented for a corpus-based speech synthesizer, and the effectiveness of the proposed method wasconfirmed by an objective evaluation as well as a subjective listening test. We also demonstrate that the proposed method generalizes some popular conventional methods in that those methods can be derived as the special cases of the proposed method.

• The Institute of Electronics, Information and Communication Engineersの論文
• 2011-10-01

著者

• Kawai Hisashi

  Knowledge Creating Communication Research Center National Institute Of Information And Communications Technology

• Kawahara Tatsuya

  Academic Center For Computing And Media Studies Kyoto Univ.

• Sakai Shinsuke

  Academic Center For Computing And Media Studies Kyoto University

関連論文

• Evaluation Framework Design of Spoken Term Detection Study at the NTCIR-9 IR for Spoken Documents Task
• Probabilistic Concatenation Modeling for Corpus-Based Speech Synthesis

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