말소리와 음성과학 (Phonetics and Speech Sciences)

  • 제4권3호
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  • Pages.111-117
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  • 2012
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  • 2005-8063(pISSN)
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  • 2586-5854(eISSN)
한국음성학회 (Korean Society of Speech Sciences)
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HMM 기반 한국어 음성합성에서의 화자적응 방식 성능비교 및 지속시간 모델 개선

Performance Comparison and Duration Model Improvement of Speaker Adaptation Methods in HMM-based Korean Speech Synthesis

  • 투고 : 2012.07.25
  • 심사 : 2012.09.21
  • 발행 : 2012.09.30
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초록

In this paper, we compare the performance of several speaker adaptation methods for a HMM-based Korean speech synthesis system with small amounts of adaptation data. According to objective and subjective evaluations, a hybrid method of constrained structural maximum a posteriori linear regression (CSMAPLR) and maximum a posteriori (MAP) adaptation shows better performance than other methods, when only five minutes of adaptation data are available for the target speaker. During the objective evaluation, we find that the duration models are insufficiently adapted to the target speaker as the spectral envelope and pitch models. To alleviate the problem, we propose the duration rectification method and the duration interpolation method. Both the objective and subjective evaluations reveal that the incorporation of the proposed two methods into the conventional speaker adaptation method is effective in improving the performance of the duration model adaptation.

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참고문헌

  1. Yoshimura, T., Tokuda, K., Masuko, T., Kobayashi, T. & Kitamura, T. (1999). Simultaneous modeling of spectrum, pitch and duration in HMM-based speech synthesis. Proc. of Eurospeech, 2347-2350.
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  10. Lee, H. & Kim, H. S. (2012). Performance comparison of speaker adaptation methods for HMM-based Korean speech synthesis system. Proc. of Spring Conference of Korean Society of Speech Sciences, 241-242. (이혜민, 김형순 (2012). HMM 기반의 한국어 음성합성에서의 화자적응 방식 성능 비교. 한국음성학회 봄 학술대회, 241-242.)