1. 1) N. Takahashi, A. Ishida, T. Nakai and H. Suzuki, “Coupling of the nasal and the oral cavities based on acoustic tube model of vocal tract,” IEICE Tech. Rep., SP95-11, pp. 7–14 (1995).
2. 2) H. Suzuki, T. Nakai and H. Sakakibara, “Analysis of acoustic properties of the nasal tract using 3-D FEM,” Proc. ICSLP 96, pp. 1285–1288 (1996).
3. 3) M. Kouchi, N. Takahashi, T. Nakai and H. Suzuki, “A basic study about the nasal sound production taking account of the acoustic combination between oral and nasal cavity in the radiation space,” IEICE Tech. Rep., EA96-13, pp. 9–12 (1996).
4. FEM analysis of sound wave propagation in the vocal tract with 3-D radiational model.
5. 5) K. Motoki, P. Badin and N. Miki, “Measurement of acoustic impedance density distribution in the near field of the labial horn,” Proc. ICSLP 94, pp. 607–610 (1994).