| Presentation | 2007/7/19 A numerical simulation of pathological speech production based on an asymmetric vocal folds model Hideyuki NOMURA, Tetsuo FUNADA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Numerical simulations of pathological voice production and estimations of pressure wave fluctuations are performed based on an asymmetric vocal folds model. The asymmetrical vocal folds model takes into account of asymmetries related to geometrical property (the thickness of vocal folds and a glottal half gap) and an asymmetry related to mechanical property (the effective depth of vocal fold vibration area). The effect of the asymmetry related to mechanical property on fluctuations in pressure wave is greater than these of the asymmetries related to geometrical property on fluctuations. Pathological voice production is numerically simulated through four types of pathological vocal folds models with the different conditions of paralytic symptoms. Left and right vocal folds vibrations have a phase difference. The slow time change of vocal fold vibrational amplitude is observed on a non-pathological vocal fold, as well as on a pathological vocal fold. The advance of disease increase fluctuations, in particular, an amplitude fluctuation in the pressure wave. This suggests that the estimation of amplitude fluctuation in wave is useful for the diagnosis of pathological vocal fold. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Pathological voice / Asymmetric vocal folds model / Asymmetric vocal folds vibrations / Fluctuation |
| Paper # | SP2007-43 |
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| Conference Information | |
| Committee | SP |
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| Conference Date | 2007/7/19(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Speech (SP) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A numerical simulation of pathological speech production based on an asymmetric vocal folds model |
| Sub Title (in English) | |
| Keyword(1) | Pathological voice |
| Keyword(2) | Asymmetric vocal folds model |
| Keyword(3) | Asymmetric vocal folds vibrations |
| Keyword(4) | Fluctuation |
| 1st Author's Name | Hideyuki NOMURA |
| 1st Author's Affiliation | Division of Electrical Engineering and Computer Science, Kanazawa University() |
| 2nd Author's Name | Tetsuo FUNADA |
| 2nd Author's Affiliation | Division of Electrical Engineering and Computer Science, Kanazawa University |
| Date | 2007/7/19 |
| Paper # | SP2007-43 |
| Volume (vol) | vol.107 |
| Number (no) | 165 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |