| Presentation | 2009-10-30 The comparison between the deletion-based methods and the mixing-basedmethods for safe speech CAPTCHA systems Takuya NISHIMOTO, Hitomi MATSUMURA, Takayuki WATANABE, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Speech-based CAPTCHA systems, which distinguish between software agents and human beings, are especially important for persons with visual disability. The popular approach is based on mixing-based methods, which use the mixed sounds of target speech and noises. We have proposed a deletion-based method which uses the phonemic restoration effects. Our approach can control the difficulty of tasks simply by the masking ratio. Our design principle of CAPTCHA insists that such tasks should be chosen so that the larger difference in performance between the machines and human beings can be provided. In this paper, we give some hypotheses on the differences between the deletion-based method and the mixing-based methods. We also show a plan of experiments which compare the automatic speech recognition performance, speech intelligibility, and mental workload of these two approaches. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Security / Visual Imparement / Speech Recognition / CAPTCHA / Mixing-based Method / Deletion-based Method |
| Paper # | SP2009-58,WIT2009-64 |
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| Conference Information | |
| Committee | WIT |
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| Conference Date | 2009/10/22(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Registration To | Well-being Information Technology(WIT) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | The comparison between the deletion-based methods and the mixing-basedmethods for safe speech CAPTCHA systems |
| Sub Title (in English) | |
| Keyword(1) | Security |
| Keyword(2) | Visual Imparement |
| Keyword(3) | Speech Recognition |
| Keyword(4) | CAPTCHA |
| Keyword(5) | Mixing-based Method |
| Keyword(6) | Deletion-based Method |
| 1st Author's Name | Takuya NISHIMOTO |
| 1st Author's Affiliation | Graduate School of Information Science and Technology, The University of Tokyo() |
| 2nd Author's Name | Hitomi MATSUMURA |
| 2nd Author's Affiliation | Department of Communication, Tokyo Woman's Christian University |
| 3rd Author's Name | Takayuki WATANABE |
| 3rd Author's Affiliation | Department of Communication, Tokyo Woman's Christian University |
| Date | 2009-10-30 |
| Paper # | SP2009-58,WIT2009-64 |
| Volume (vol) | vol.109 |
| Number (no) | 260 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |