| 基于听觉特性的DCT域数字音频水印算法 |
| |
| 引用本文： | 王永琦,杨洋.基于听觉特性的DCT域数字音频水印算法[J].计算机工程与应用,2008,44(3):88-90. |
| |
| 作者姓名： | 王永琦 杨洋 |
| |
| 作者单位： | 1. 上海工程技术大学,电子电气学院,上海,201620
2. 上海工程技术大学,高职学院,上海,200437 |
| |
| 基金项目： | 上海市高校优秀青年教师后备人选科研项目 |
| |
| 摘 要： | 提出一种基于听觉掩蔽效应和量化的DCT域音频水印嵌入方案,根据人耳的生理听觉特性,计算音频信号的掩蔽阈值对获取的中低频系数量化后嵌入数字水印图像,量化步长由掩蔽阈值自适应控制,并且水印的提出和检测都不需要原始数字音频信号的参与。实验结果表明,该算法具有较好的不可感知性,并且对压缩、滤波等操作具有较强的鲁棒性。
|
| 关 键 词： | 数字音频水印 人类听觉特性 掩蔽阈值 离散余弦变换 量化 |
| 文章编号： | 1002-8331(2008)03-0088-03 |
| 修稿时间： | 2007年7月1日 |
Digital audio watermarking algorithm based on psychoacoustic model DCT |
| |
| WANG Yong-qi,YANG Yang.Digital audio watermarking algorithm based on psychoacoustic model DCT[J].Computer Engineering and Applications,2008,44(3):88-90. |
| |
| Authors: | WANG Yong-qi YANG Yang |
| |
| Affiliation: | 1.College of Electrical and Electronic Engineering，Shanghai University of Engineering Science，Shanghai 201620，China 2.College of Advanced Vocational Technical，Shanghai University of Engineering Science，Shanghai 200437，China |
| |
| Abstract: | This paper presents a digital audio watermarking algorithm based on psychoacoustic model and quantizing DCT coefficients.The masking threshold for each audio signal segment is calculated on the basic psychoacoustic model,watermarking is embedded by quantizing DCT low-band and mid-band frequency coefficients of digital audio signal.The embedding strength is adaptively controlled by the masking threshold.The experimental results demonstrate that the algorithm does well in transparency and is robust to most popular digital signal processing attacks such as compressionand filtering. |
| |
| Keywords: | digital audio watermarking human auditory system masking threshold DCT transform quantization |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《计算机工程与应用》浏览原始摘要信息 |
|
点击此处可从《计算机工程与应用》下载全文 |
