Comprehensive voice conversion analysis based on DGMM and feature combination

He Pan, Yangjie Wei, Nan Guan, Yi Wang

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review


Voice conversion system modifies a speaker's voice to be perceived as another speaker uttered, and now it is widely used in many real applications. However, most research only focuses on one aspect performance of voice conversion system, rare theoretical analysis and experimental comparison on the whole source-target speaker voice conversion process has been introduced. Therefore, in this paper, a comprehensive analysis on source-target speaker voice conversion is conducted based on three key steps, including acoustic features selection and extraction, voice conversion model construction, and target speech synthesis, and a complete and optimal source-target speaker voice conversion is proposed. First, a comprehensive feature combination form consisting of prosodic feature, spectrum parameter and spectral envelope characteristic, is proposed. Then, to void the discontinuity and spectrum distortion of a converted speech, DGMM (Dynamic Gaussian Mixture Model) considering dynamic information between frames is presented. Subsequently, for speech synthesis, STRAIGHT algorithm synthesizer with feature combination is modified. Finally, the objective contrast experiment shows that our new source-target voice conversion process achieves better performance than the conventional methods. In addition, the speaker recognition system is also used to evaluate the quality of converted speech, and experimental result shows that the converted speech has higher target speaker individuality and speech quality.
Original languageEnglish
Title of host publicationProceedings - Asia Modelling Symposium 2014
Subtitle of host publication8th Asia International Conference on Mathematical Modelling and Computer Simulation, AMS 2014
Number of pages6
ISBN (Electronic)9781479964871
Publication statusPublished - 2 Apr 2014
Externally publishedYes
Event2014 8th Asia International Conference on Mathematical Modelling and Computer Simulation - Asia Modelling Symposium, AMS 2014 - Kuala Lumpur, Malaysia
Duration: 23 Sep 201425 Sep 2014


Conference2014 8th Asia International Conference on Mathematical Modelling and Computer Simulation - Asia Modelling Symposium, AMS 2014
CityKuala Lumpur


  • DGMM
  • feature combination
  • speaker recognition
  • STRAIGHT synthesis
  • voice conversion

ASJC Scopus subject areas

  • Modelling and Simulation

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