ISCA Archive ICSLP 1994
ISCA Archive ICSLP 1994

New spectrum interpolation method for improving quality of synthesized speech

Takashi Endo, Shun'ichi Yajima

This paper proposed a new spectrum interpolation method for improving quality of synthesized speech. This method named SSFL(Spectrum Sliding on Formant Loci) overcomes one of the most serious problems in the OLA(Overlapping Addition) method that the continuity of formant loci at a transition part between phonemes is not guaranteed. This discontinuity of formant loci decreases quality of synthesized speech. In the SSFL method, waves are transformed into spectra to interpolate in the spectrum domain and then spectra interpolated are transformed into waves to produce synthesized speech. We have evaluated the proposed SSFL method by synthesizing continuous Japanese speech /aiueo/. The evaluation results have confirmed that the proposed SSFL improved the quality of synthesized speech because it guaranteed the continuity of formant loci.


Cite as: Endo, T., Yajima, S. (1994) New spectrum interpolation method for improving quality of synthesized speech. Proc. 3rd International Conference on Spoken Language Processing (ICSLP 1994), 1635-1638

@inproceedings{endo94_icslp,
  author={Takashi Endo and Shun'ichi Yajima},
  title={{New spectrum interpolation method for improving quality of synthesized speech}},
  year=1994,
  booktitle={Proc. 3rd International Conference on Spoken Language Processing (ICSLP 1994)},
  pages={1635--1638}
}