基于DCT与DWT的音频水印算法  

Audio Watermarking Algorithm Based on DCT and DWT

作　　者：陈雪松[1] 高畅[1] 

机构地区：[1]大庆石油学院电气信息工程学院,黑龙江大庆63318

出　　处：《计算机安全》2009年第12期48-50,共3页Network & Computer Security

基　　金：黑龙江省教育厅科学技术研究项目(编号:11521014)

摘　　要：采用DCT和DWT两种方法相结合的抗同步攻击的鲁棒性数字音频水印算法,利用DWT的多分辨率特性以及DCT的解相关能力和聚能作用,并且在音频分段后引入同步技术,在保证不可感知性和稳健性的良好平衡下实现了水印的盲检测。使用纠错码技术进行水印的嵌入,以此来降低水印的检测错误率。在接收端进行盲提取。实验结果表明,该算法具有很强的鲁棒性和不可感知性。Robustness digital audio watermarking algorithm for resistance to synchronization attack is based on the DCT and DWT method. The multi-resolution of DWT is combined by the de-correlation capability and energy aggregation of DCT. Furthermore, the synchronization technology is introduced in the audio section. The blind detection of watermark can be achieved under the guarantee at a good balance of unperceived and robustness. The technique for correct error coding is used to embed watermark in order to reduce detection error rate of watermark. Blind extractionis implemented at the receiver. Experimental results show that this algorithm has strong performance of robustness and unperceived ability.

关 键 词：水印 音频 离散余弦变换 离散小波变换 鲁棒性 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术] TN912.3[自动化与计算机技术—计算机科学与技术]