| A novel audio watermarking scheme using multiscale wavelet modulation |
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| 作者姓名： | JI Bing ZHANG De JI Xiaoyong |
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| 作者单位： | State Key Laboratory of Modern Acoustics, Institute of Acoustics, Nanjing University, Nanjing 210093, China; Institute of Communication Technique, Nanjing University, Nanjing 210093, China,State Key Laboratory of Modern Acoustics, Institute of Acoustics, Nanjing University, Nanjing 210093, China; Institute of Communication Technique, Nanjing University, Nanjing 210093, China,Institute of Communication Technique, Nanjing University, Nanjing 210093, China |
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| 摘 要： | A novel audio watermarking scheme to embed robust and inaudible watermarks for the purpose of copyright protection is proposed. The key innovation is to add time-frequency redundancy into watermark signals by multiscale wavelet modulation. In order to maximize the watermarking strength within perceptual constraints, the signals synthesized from different scales are masked using a frequency auditory model, respectively, and then intergrated to form the final watermark signal. The detection structure is built using the redundancy in watermark signals, and the performance is further enhanced by modeling the statistical behaviors of wavelet coefficients as generalized Gaussian distribution. The use of original audio signal is not required in watermark detection. The experimental results show that our approach can achieve not only good transparency but also satisfying robustness to common audio manipulations.
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| 关 键 词： | audio watermarking multiscale wavelet modulation auditory masking generalized Gaussian distributi |
A novel audio watermarking scheme using multiscale wavelet modulation |
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| JI Bing,ZHANG De,JI Xiaoyong.A novel audio watermarking scheme using multiscale wavelet modulation[J].Progress in Natural Science,2004,14(8):664-669. |
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| Authors: | JI Bing ZHANG De JI Xiaoyong |
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| Institution: | 1. State Key Laboratory of Modern Acoustics, Institute of Acoustics, Nanjing University, Nanjing 210093, China; Institute of Communication Technique, Nanjing University, Nanjing 210093, China
2. Institute of Communication Technique, Nanjing University, Nanjing 210093, China |
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| Abstract: | A novel audio watermarking scheme to embed robust and inaudible watermarks for the purpose of copyright protection is proposed. The key innovation is to add time-frequency redundancy into watermark signals by multiscale wavelet modulation. In order to maximize the watermarking strength within perceptual constraints, the signals synthesized from different scales are masked using a frequency auditory model, respectively, and then intergrated to form the final watermark signal. The detection structure is built using the redundancy in watermark signals, and the performance is further enhanced by modeling the statistical behaviors of wavelet coefficients as generalized Gaussian distribution. The use of original audio signal is not required in watermark detection. The experimental results show that our approach can achieve not only good transparency but also satisfying robustness to common audio manipulations. |
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| Keywords: | audio watermarking multiscale wavelet modulation auditory masking generalized Gaussian distributi |
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