1991 Fiscal Year Final Research Report Summary
Time Varying Circuit Model of Speech Production System
| Project/Area Number |
01460153
|
|---|
| Research Category |
Grant-in-Aid for General Scientific Research (B)
|
| Allocation Type | Single-year Grants |
|---|
| Research Field |
電子機器工学
|
|---|
| Research Institution | Hokkaido University |
|---|
Principal Investigator |
MIKI Nobuhiro Hokkaido Univ. Res. Inst. Appl. Elec. Prof., 応用電気研究所, 助教授 (30002314)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
SUZUKI Masakiyo Hokkaido Univ. Res. Inst. Appl. Elec. Res. Assoc., 応用電気研究所, 助手 (60192621)
MOTOKI Kunitoshi Hokkai-Gakuen Univ. Engineering Assist. Prof., 工学部, 講師 (80219980)
NAGAI Nobuo Hokkaido Univ. Res. Inst. Appl. Elec. Prof., 応用電気研究所, 教授 (80001692)
|
|---|
| Project Period (FY) |
1989 – 1991
|
| Keywords | speech / speech production / time-varying / FEM / flow simulation / wall impedance / 等価回路 / 音声合成 |
|---|
| Research Abstract |
We considered a method to measure the area function of a nonuniform acoustic tube using the distribution of complex sound pressure. The experemental results show reasonable area functions, and that this method is applicable to the area estimation of the vocal tract. Using a two-dimensional model of glottis, we performed numerical analysis of the two-dimensional air flow. In this analysis we have employed Navier-Stokes equation of nonlinear viscous fluid flows and FEM. We show that vortices and turbulent are generated on downstream from glottis. We have also proposed a new model of the wall impedance of vocal tract, and wall vibrational effect was considered in the non-circle cross section.
|
