| Project/Area Number |
26280066
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Perceptual information processing
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| Research Institution | National Institute of Informatics |
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Principal Investigator |
Yamagishi Junichi 国立情報学研究所, コンテンツ科学研究系, 准教授 (70709352)
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| Co-Investigator(Kenkyū-buntansha) |
松井 知子 統計数理研究所, モデリング研究系, 教授 (10370090)
越前 功 国立情報学研究所, コンテンツ科学研究系, 教授 (30462188)
小野 順貴 国立情報学研究所, 情報プリンシプル研究系, 准教授 (80334259)
塩田 さやか 首都大学東京, システムデザイン研究科, 助教 (90705039)
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥16,250,000 (Direct Cost: ¥12,500,000、Indirect Cost: ¥3,750,000)
Fiscal Year 2016: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2015: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2014: ¥6,630,000 (Direct Cost: ¥5,100,000、Indirect Cost: ¥1,530,000)
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| Keywords | 生体認証 / 話者照合 / 詐称 / 生体検知 / 音声合成 / 声質変換 / 知覚情報処理 / 音声情報処理 / PAD / Anti spoofing / 人間情報学 |
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| Outline of Final Research Achievements |
Among various biometrics, speech-based biometrics called speaker verification becomes popular recently and has been adopted for various applications in society and industry because it can be conveniently utilized based on a microphone only. However, it is also reported that spoofing of speaker verification is possible using recently advanced speech synthesis and voice transformation techniques. For this problem, we have introduced a novel technique called liveness detection or anti-spoofing for speaker verification systems to verify if an inputted speech signal is really produced by a live human or not. We have also constructed the first large-scale spoofed speech database in the world and have organized events where participants compete the accuracy of their anti-spoofing techniques on the same corpus. Moreover, we showed that it is possible to discriminate live human speech from speech replayed from loudspeakers using a pop noise, which is a distorted signal caused by breath.
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