| Project/Area Number |
23300070
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Perception information processing/Intelligent robotics
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| Research Institution | Japan Advanced Institute of Science and Technology |
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Principal Investigator |
UNOKI MASASHI 北陸先端科学技術大学院大学, 情報科学研究科, 准教授 (00343187)
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| Co-Investigator(Kenkyū-buntansha) |
MIYAUCHI Ryota 北陸先端科学技術大学院大学, 情報科学研究科, 助教 (30455852)
AIBA Eriko 電気通信大学, 大学院・情報システム学研究科, 助教 (40569761)
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| Project Period (FY) |
2011-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥17,940,000 (Direct Cost: ¥13,800,000、Indirect Cost: ¥4,140,000)
Fiscal Year 2013: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2012: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2011: ¥11,700,000 (Direct Cost: ¥9,000,000、Indirect Cost: ¥2,700,000)
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| Keywords | 情報ハイディング / 蝸牛遅延 / 知覚不可能性 / 頑健性 / 秘匿性 |
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| Research Abstract |
This study aimed to propose a scheme of digital audio/speech information hiding techniques by considering phase controlling based on psychoacoustical and physiological studies for human auditory perception. This study investigated to relationships between phase shifts based on cochlear delay and audibility and then realized methods for effectively controlling phase modulation based on cochlear delay for inaudibility. This study then proposed inaudible, blind, robust, and reversible digital-audio watermarking methods from these investigations. Information hiding for AM radio systems, tampering detection method for speech, speech watermarking based on formant enhancement, and scramble method for speech signal by random-bit shift of quantization were introduced as applications of the proposed scheme.
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