한국음향학회:학술대회논문집 (Proceedings of the Acoustical Society of Korea Conference)

한국음향학회 (The Acoustical Society of Korea)
권호 표지

남녀 음성 변환 기술연구

A Study On Male-To-Female Voice Conversion

  • 최정규 (한국정보통신대학원대학교 공학부) ;
  • 김재민 (한국정보통신대학원대학교 공학부) ;
  • 한민수 (한국정보통신대학원대학교 공학부)
  • Choi Jung-Kyu (School of Engineering, Information and Communications University) ;
  • Kim Jae-Min (School of Engineering, Information and Communications University) ;
  • Han Min-Su (School of Engineering, Information and Communications University)
  • 발행 : 2000.07.07
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초록

Voice conversion technology is essential for TTS systems because the construction of speech database takes much effort. In this paper. male-to-female voice conversion technology in Korean LPC TTS system has been studied. In general. the parameters for voice color conversion are categorized into acoustic and prosodic parameters. This paper adopts LSF(Line Spectral Frequency) for acoustic parameter, pitch period and duration for prosodic parameters. In this paper. Pitch period is shortened by the half, duration is shortened by $25\%, and LSFs are shifted linearly for the voice conversion. And the synthesized speech is post-filtered by a bandpass filter. The proposed algorithm is simpler than other algorithms. for example, VQ and Neural Net based methods. And we don't even need to estimate formant information. The MOS(Mean Opinion Socre) test for naturalness shows 2.25 and for female closeness, 3.2. In conclusion, by using the proposed algorithm. male-to-female voice conversion system can be simply implemented with relatively successful results.

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