1. Akagi, M., Kitakaze, H., 2000. Perception of synthesized singing-voices with fine-fluctuations in their fundamental frequency fluctuations. In: Proc. ICSLP2000, vol. 3, pp. 458–461.
2. Akagi, M., Iwaki, M., Minakawa, T., 1998. Fundamental frequency fluctuation in continuous vowel utterance and its perception. In: Proc. ICSLP98, Sydney, vol. 4, pp. 1519–1522.
3. de Cheveigne, A., Kawahara, H., 2001. Comparative evaluation of F0 estimation algorithms. In: Proc. Eurospeech2001, pp. 2451–2454.
4. de Krom, G., Bloothooft, G., 1995. Timing and accuracy of fundamental frequency changes in singing. In: Proc. ICPhS’95, vol. 1, pp. 206–209.
5. Analysis control in singing;Fujisaki,1981