| 基于小波变换的音频数字水印方法 |
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| 引用本文： | 姜海涛.基于小波变换的音频数字水印方法[J].数字社区&智能家居,2009,5(7):5279-5281. |
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| 作者姓名： | 姜海涛 |
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| 作者单位： | 曲阜师范大学计算机科学学院,山东曲阜273165 |
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| 摘 要： | 数字水印是为了解决保护知识产权等相关问题而发展出来的一种技术。该文针对音频上的数字水印，提出以小波封包分频方式，按照人耳声学模型，将音频信号由滤波器群组分成29个次频带，从而找出最小临界值，此值作为嵌入数字水印时小波系数的依据。并且使用区域分频来过滤不适合嵌入水印的频率，区域，将数字水印嵌入不易改变极性的频率区域，提高了的数字水印的鲁棒性。
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| 关 键 词： | 数字水印 小波变换 人耳模型 数字水印嵌入 |
Audio Watermarking System using Wavelet Packet Decomposition |
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| JIANG Hai-tao.Audio Watermarking System using Wavelet Packet Decomposition[J].Digital Community & Smart Home,2009,5(7):5279-5281. |
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| Authors: | JIANG Hai-tao |
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| Affiliation: | JIANG Hai-tao (Computer Science College, Qufu Nomlal University, Qufu 273165, China) |
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| Abstract: | Watermark is presented for the purpose of protect intellectual property and related problems. This paper propose an audio watermarking system,based on wavelet packet decimposition and psycho-acoustic modeling.The original addio signal is first segmented and divided into 29 subbands via wavelet packet decimposition, so the minimum masking threshold is detcted, and the minimum masking thresh- old is used for embeding watermark . Simulation results show that the watermarking system is robust. |
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| Keywords: | watermark wavelet packet psycho-acoustic modeling watermark embed |
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