[1]高健,刘星星,杨珂. 自适应最小能量谐波相位偏转音频水印算法[J].计算机技术与发展,2016,26(05):110-114.
　GAO Jian,LIU Xing-xing,YANG Ke. An Adaptive Audio Watermarking Algorithm Based on Minimum Energy of Harmonic Phase Deflection[J].,2016,26(05):110-114.
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 自适应最小能量谐波相位偏转音频水印算法()
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《计算机技术与发展》[ISSN:1006-6977/CN:61-1281/TN]

卷:
26
期数:
2016年05期
页码:
110-114
栏目:
安全与防范
出版日期:
2016-05-10

文章信息/Info

Title:
 An Adaptive Audio Watermarking Algorithm Based on Minimum Energy of Harmonic Phase Deflection
文章编号:
1673-629X（2016)05-0110-05
作者:
 高健; 刘星星; 杨珂
 上海大学 机电工程与自动化学院
Author(s):
 GAO Jian; LIU Xing-xing; YANG Ke
关键词:
 ; 离散余弦变换; 符号; 品质因子; MP3压缩
Keywords:
 ; discrete cosine transform; symbol; quality factor; MP3 compression
分类号:
TP309
文献标志码:
A
摘要:
 随着计算机网络的飞速发展,多媒体音频的传输越来越便利,以致音频作品的版权保护也显得日趋重要.针对离散余弦变换(DCT)的频谱系数符号具有良好鲁棒性的特点,文中提出了一种基于最小能量谐波相位偏转的音频水印算法.该算法依据音频幅值平均值具备良好的鲁棒性特点,将音频数据根据水印长度进行分段处理,对每个数据段去绝对值的平均值进行离散余弦变换,通过偏转最小能量谐波的相位实现水印信息的嵌入.为了控制水印的嵌入强度,引入了品质因子这一性能指标,将音频文件分解为若干水印可嵌入段和水印不可嵌入段,确保水印信息的嵌入对音频数据的改变控制在较小范围内.实验结果表明,该算法不仅具有非常好的不可感知性,而且对常规信号处理操作具备较好的鲁棒性.
Abstract:
 With the rapid development of computer network,the transportation of multi-media audio is becoming more and more conven-ient,which makes the right protection of audio works more important. For the symbol of spectral coefficients has robustness for spectral coefficients Discrete Cosine Transform ( DCT) ,the novel audio watermarking algorithm based on the minimum energy-harmonic phase deflection has been proposed. Based on audio amplitude average with good robustness characteristics,the audio data is segmented accord-ing to the length of the watermarking,and average value out of absolute value for each data segment is carried on DCT,implementation of the embedding of watermarking through deflection of phase for minimum energy harmonic. In order to control the strength of the embed-ding watermarking,the algorithm uses the quality factor as a performance index. Audio files are divided into several watermark embedding segments and watermark segments cannot be embedded. This object is to ensure that the embedded watermark information has a little effect on audio data. The experimental results show that the proposed algorithm has a good performance in terms of imperceptibility,and also has a high robustness for the conventional signal processing operations.

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更新日期/Last Update: 2016-09-19