A study on three-dimensional sensing of articulatory movements and its application to cognitive sciences
| Project/Area Number |
25540071
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Perceptual information processing
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| Research Institution | Kyushu University |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2015: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Keywords | 音声情報処理 / 発話運動 / 磁気センサ / ３次元計測 / 運動計測 / 音声生成 / 調音結合 / 言語情報 / 発話動作 / 磁気センサシステム / 送信コイル配置 / 磁場シミュレーション / モーションキャプチャ / 調音器官 / 調音運動 / ３次元測定 / 測定精度 / 磁界シミュレーション / システム最適化 |
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| Outline of Final Research Achievements |
An electromagnetic sensing system was developed to observe the position of multiple receiver coils attached to the surface of the articulatory organs. This system detects the receiver position by measuring signals induced from surrounding magnetic fields and by solving a set of simultaneous equations representing the predicted magnetic fields by using a dipole model of the transmitter coils. Previous studies report a noticeable increase in the position estimation error irrespective of small signal prediction error and the existence of non-uniqueness problem in the position estimation was hypothesized to be the cause of this problem. To resolve the problem, we optimized the alignment of the transmitter coils by maximizing the difference between the receiver signals for any pair of states in the measurement region and evaluated the alignment by performing computer simulations and actual measurement. As a result, measurement error was decreased from 1.58 mm to 0.40 mm.
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Report
(4 results)
Research Products
(8 results)
