말소리와 음성과학 (Phonetics and Speech Sciences)

  • 제13권3호
  • /
  • Pages.65-70
  • /
  • 2021
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  • 2005-8063(pISSN)
  • /
  • 2586-5854(eISSN)
한국음성학회 (Korean Society of Speech Sciences)
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Designing a large recording script for open-domain English speech synthesis

  • Kim, Sunhee (Department of French Language Education, Seoul National University) ;
  • Kim, Hojeong (Department of Foreign Language Education, Seoul National University) ;
  • Lee, Yooseop (Department of French Language Education, Seoul National University) ;
  • Kim, Boryoung (Department of French Language Education, Seoul National University) ;
  • Won, Yongkook (Center for Educational Research, Seoul National University) ;
  • Kim, Bongwan (Kakao Enterprise Corp.)
  • 투고 : 2021.07.31
  • 심사 : 2021.09.09
  • 발행 : 2021.09.30
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초록

This paper proposes a method for designing a large recording script for open domain English speech synthesis. For read-aloud style text, 12 domains and 294 sub-domains were designed using text contained in five different news media publications. For conversational style text, 4 domains and 36 sub-domains were designed using movie subtitles. The final script consists of 43,013 sentences, 27,085 read-aloud style sentences, and 15,928 conversational style sentences, consisting of 549,683 tokens and 38,356 types. The completed script is analyzed using four criteria: word coverage (type coverage and token coverage), high-frequency vocabulary coverage, phonetic coverage (diphone coverage and triphone coverage), and readability. The type coverage of our script reaches 36.86% despite its low token coverage of 2.97%. The high-frequency vocabulary coverage of the script is 73.82%, and the diphone coverage and triphone coverage of the whole script is 86.70% and 38.92%, respectively. The average readability of whole sentences is 9.03. The results of analysis show that the proposed method is effective in producing a large recording script for English speech synthesis, demonstrating good coverage in terms of unique words, high-frequency vocabulary, phonetic units, and readability.

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과제정보

This work was supported by the Kakao Enterprise Corporation.

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