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基于卷积码的盲音频水印算法研究
引用本文:徐达文,王让定.基于卷积码的盲音频水印算法研究[J].计算机应用,2006,26(7):1649-1651.
作者姓名:徐达文  王让定
作者单位:1. 宁波工程学院,电子与信息工程学院,浙江,宁波,315016
2. 宁波大学,纵横智能软件研究所,浙江,宁波,315211
摘    要:提出了一种基于提升小波和卷积码的盲音频水印算法。原始音频信号经过提升小波变换后,选取中低频小波系数进行自适应水印嵌入。水印在嵌入前经过卷积编码和交织预处理,以提高水印系统的抗干扰能力。为了增强算法的鲁棒性,水印提取时采用了软判决Viterbi译码。实验结果表明,该水印算法具有较好的性能。

关 键 词:盲音频水印  提升小波  卷积码  Viterbi译码
文章编号:1001-9081(2006)07-1649-03
收稿时间:2006-01-09
修稿时间:2006-01-09

A blind audio watermarking algorithm based on convolutional codes
XU Da-wen,WANG Rang-ding.A blind audio watermarking algorithm based on convolutional codes[J].journal of Computer Applications,2006,26(7):1649-1651.
Authors:XU Da-wen  WANG Rang-ding
Affiliation:1. School of Electronic and Information, Ningbo University of Technology, Ningbo Zhejiang 315016, China; 2, CKC Software Laboratory, Ningbo University, Ningbo Zhefiang 315211, China
Abstract:A blind audio watermarking algorithm based on convolutional codes was proposed. The watermark was embedded in the low-middle frequency coefficients in lifting wavelet domain adaptively. In order to improve the ability to resist the disturbance, the watermark was processed by convolutional encoding and interleaving before embedding. In order to enhance the robustness, the watermarking detection algorithm which used Viterbi soft-decision decoding was presented. The experiment results show that the performance of the proposed algorithm is good.
Keywords:blind audio watermarking  lifting wavelet  convolutional code  Viterbi decoding
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