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用于MP3音频压缩的水印嵌入技术研究 被引量:1

Audio Watermarking for MP3 Coding with Low Bitrate and Low Sampling Frequency
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摘要 MP3已经成为数字音频的主流压缩编码。该文从实验出发探讨了MP3编解码对时域和频域两方面影响,基于此提出了一种MP3编解码的水印算法:针对时域变化采用载体信号和重采样划分来实现嵌入与提取同步,通过量化相邻子帧低频能量比来嵌入信息以消除频域失真。并基于嵌入帧平均信噪比和提取准确率估计给出了该算法的参数参考值。实验证明该算法不仅能够用于抗低码率低采样高压缩比的MP3编解码,且具有良好的不可感知性和嵌入容量,同时还进行了AAC编解码测试。 MP3 coding has become the most popular coding method for audio signals. The distortions of MP3 coding from time and frequency domain based on experiments are explored. An audio watermarking method is proposed: besides synchronization by extracting "host signal", secret bit is embedded by quantizing the proportion of low frequency energy of two sequential frames. Then reference parameter values by evaluation of each embedding frame were suggested. The experiment results show the imperceptablity and the robustness against MP3 with a low bit rate and low sampling frequency and against AAC coding, also with a satisfying capacity.
出处 《电子与信息学报》 EI CSCD 北大核心 2008年第11期2678-2683,共6页 Journal of Electronics & Information Technology
基金 国家自然科学基金(60772032)资助项目
关键词 MP3 音频水印 同步机制 低频能量比 量化调制 MP3 Audio watermarking Synchronization Proportion of low frequency energy Quantization modulation
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参考文献11

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二级参考文献20

  • 1Arnold M..Audio watermarking:Features,applications and algorithms.In:Proceedings of IEEE International Conference on Multimedia & Expo,New York,USA,2000,2:1013~1016.
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  • 8Wu Shao-Quan,Huang Ji-Wu,Huang Da-Ren,Shi Yun Q..Efficiently self-synchronized audio watermarking for assured audio data transmission.IEEE Transactions on Broadcasting,2005,51(1):69~76.
  • 9Lie Wen-Nung,Chang Li-Chun.Robust and high-quality timedomain audio watermarking subject to psychoacoustic masking.In:Proceedings of IEEE International Symposium on Circuits and Systems,Arizona,USA,2002,2:45~48.
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