计算机技术与发展Issue(2)：233-236,4.DOI:10.3969/j.issn.1673-629X.2013.02.060
基于能量选择的DCT域音频数字水印算法
An Audio Digital Watermark Algorithm in DCT Domain Based on Energy Selection
摘要
Abstract
An audio digital watermark algorithm in DCT domain based on the energy selection is proposed in this paper. A right position in the low frequency coefficients of the DCT domain is adaptively found by the energy selection of the time-domain sequence based on masking properties of the human auditory system (HAS) and the energy invariant characteristic of discrete cosine transform (DCT). U-sing the feature of inserting an audio digital watermark at the larger energy place of the audio signal will cause the less impact on the audi-o signal and converting the two dimensional image to a one-dimensional binary sequence. Experiment results show that the proposed al-gorithm is not only imperceptible,but also robust to common operations to digital audio signal,such as additive white Gaussian noise,fil-ter and so on.关键词
离散余弦变换/能量选择/数字音频水印/自适应Key words
discrete cosine transform/energy selection/digital audio watermarking/adaptive分类
信息技术与安全科学引用本文复制引用
王铭,张玲华..基于能量选择的DCT域音频数字水印算法[J].计算机技术与发展,2013,(2):233-236,4.基金项目
江苏省“青蓝工程”中青年学术带头人课题 （）
江苏高校优势学科建设工程资助项目(PAPD) （PAPD）
