| Project/Area Number |
23500637
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Rehabilitation science/Welfare engineering
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| Research Institution | Sendai National College of Technology |
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Principal Investigator |
HONGO Satoshi 仙台高等専門学校, 専攻科, 教授 (80271881)
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| Co-Investigator(Kenkyū-buntansha) |
YAIRI Satoshi 仙台高等専門学校, 専攻科, 准教授 (00447187)
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| Project Period (FY) |
2011-04-28 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2012: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2011: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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| Keywords | バイノーラル / 両耳聴補聴器 / マガーク効果 / 視聴覚刺激 / 時間遅れ / 両耳補聴器 / 音声了解度 / FW03 / 視聴覚非同期条件 / TS-BASE / 音像定位 / 両耳補聴 / 視聴覚相互作用 / Motiv / 脳波測定 |
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| Outline of Final Research Achievements |
In next-generation binaural ear-aid system, the asynchronous between audio signal and visual signal can be significant problem for speech recognition and sense of sound source localization. The aim of this study is to clarify the limit of time delay for processing time of binaural ear-aid system from the point of view of speech recognition rate and sense of sound localization.
We performed the speech recognition tests and movement sound source tests by using human examinee. As a result of this study, we found that it is necessary to reduce the delay time of processing in ear-aid system to 100ms for good Japanese speech recognition. In addition, it was revealed that the influence for recognition rate in the consonant sound is larger than the vowel sound. Furthermore, from the movement sound source test, it became clear that the limit delay time not to feel sense of incongruity is less 100ms when the speed of movement sound source is human walking speed.
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