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An Effective Watermarking Method Based on Energy Averaging in Audio Signals

机译：一种基于能量平均的音频信号有效水印方法

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摘要

Methods based on discrete cosine transform (DCT) have been proposed for digital watermarking of audio signals; however, the watermark is often vulnerable to data compression and signal processing. This paper presents an effective audio watermarking method by energy averaging of DCT coefficients such that an audio signal with watermark is robust to data processing. The method is to divide an audio signal into segments by three parameters defining the segment length, the segment sequence of watermark location, and the frequency range of DCT coefficients for watermark location. An error correcting code is also integrated to improve audio signal quality after watermarking. Experimental results show that the method is robust to data compression and many other kinds of signal processing. No original signal is required for decoding the watermark. Comparison of watermarking performance with a recent work validates that the watermarking method has better audio quality and higher robustness.
机译：已经提出了基于离散余弦变换（DCT）的方法来对音频信号进行数字水印处理。但是，水印通常容易受到数据压缩和信号处理的影响。本文提出了一种通过对DCT系数进行能量平均的有效音频水印方法，以使带有水印的音频信号对数据处理具有鲁棒性。该方法是通过三个参数将音频信号分成多个片段，这些参数定义了片段长度，水印位置的片段序列以及水印位置的DCT系数的频率范围。还集成了纠错码以改善加水印后的音频信号质量。实验结果表明，该方法对数据压缩和许多其他类型的信号处理具有鲁棒性。解码水印不需要原始信号。将水印性能与最近的工作进行比较，证明水印方法具有更好的音频质量和更高的鲁棒性。

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  • 来源
    《Mathematical Problems in Engineering》 |2018年第7期|6420314.1-6420314.8|共8页
  • 作者

    Tsai S. E.; Yang S. M.;

  • 作者单位

    Chang Jung Christian Univ, Dept Comp Sci & Informat Engn, Tainan 701, Taiwan;

    Natl Cheng Kung Univ, Dept Aeronaut & Astronaut, Tainan 701, Taiwan;

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