文档介绍：性能优越的混合域数字音频盲水印算法
王向阳1,2, 杨红颖1, 牛盼盼1
(1. 辽宁师范大学计算机与信息技术学院,辽宁大连 116029;
2. 北京大学视觉与听觉信息处理国家重点实验室,北京 100871)
摘要:提出了一种性能优越的自适应混合域数字音频水印嵌入算法,首先将原始数字音频划分成音频数据段;然后选取巴克码作为同步码,并在时域内将同步码嵌入到音频段的前部分;最后对音频段后部分实施DWT和DCT,并采用量化调制策略将水印信息嵌入到频域系数中。实验结果表明,该算法对常规信号处理与去同步攻击均具有较好的顽健性。
关键词:数字水印;数字音频;去同步攻击;混合域
中图分类号:TP391 文献标识码:A 文章编号:1000-436X(2007)02-0109-06
Novel blind audio watermarking algorithm in the hybrid domain
WANG Xiang-yang1,2, YANG Hong-ying1, NIU Pan-pan1
(1. School puter and Information Technique, Liaoning Normal University, Dalian 116029, China;
2. State Key Laboratory of Vision and Auditory Information Processing, Beijing University, Beijing 100871, China)
Abstract: A new robust digital audio watermarking against desynchronization attack using DWT and DCT was proposed. Firstly, the origin digital audio was segmented and then each segment was cut into two sections. Secondly, with the spatial watermarking technique, synchronization code was embedded into the first section. Finally, the DWT and DCT were performed on the second section, and then the watermark was embedded into the low ponents by quantization. Experiment results show that the proposed watermarking scheme is inaudible and robust against various signal processing such as noise adding, re-sampling, re-quantization, random cropping, MPEG audio layer 3 (MP3) compression, time-scale modification, frequency-scale modif