基于混沌加密的小波域音频盲水印算法

摘要

本文将混沌理论引入到了音频水印系统的研究中,设计了一种将一段简短的音频用混沌序列进行加密后,作为载体嵌入到原始音频信号的小波域中.先将作为水印的音频信号利用混沌映射进行置乱,然后再利用混沌序列实现对隐藏位置的保密.这种方法既保证了水印的安全性又实现了水印的盲提取.实验表明,此方法具有很高的安全性和鲁棒性.%This article introduced the chaos theory into the study of audiu watermarking system, and designed a kind of a short audio chaotic sequence which is encrypted and then embedded into DWT of the original audio signal as a carrier.First scramble the audio signal as the watermark by using chaos mapping, and then keep secret for hidden location using chaotic sequences This method not only guarantees the security of watermark, but also realizes the blind watermarking extraction.Experimental results show that this method has u high security and robustness.