| 一种精确篡改定位的数字语音取证算法 |
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| 作者单位： | ;1.信阳师范学院数学与信息科学学院 |
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| 摘 要： | 提出了一种精确篡改定位的数字语音取证算法.语音信号分帧后,对各帧信号进行置乱.水印由帧号和信号系数自相关生成,并嵌入到置乱后的信号中.实验分析结果表明,本文算法具有较好的不可听性和对恶意攻击进行精确篡改定位的能力,同时,提高了水印系统的安全性.
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| 关 键 词： | 数字水印 内容取证 篡改定位 数字语音 |
A Precise Tamper Location Algorithm Used for Content Authentication of Digital Speech Signal |
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| Institution: | ,College of Mathematics and Information Science,Xinyang Normal University |
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| Abstract: | A content authentication algorithm for digital speech signal was proposed. After the speech signal was framed,the samples of each frame were scrambled. Watermark bits were generated by the frame number and coefficients self-correlation degree,and embedded into the scrambled signal. Performance analysis demonstrated that the proposed scheme was inaudible,had the ability of tamper location precisely and improved the security of watermark system. |
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| Keywords: | digital watermark content authentication tamper location digital speech signal |
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