基于离散小波变换的音频信号数字水印技术研究

Research on Digital Audio Watermarking Technology Based on DWT

本文的研究以离散小波变换(DWT,Discrete Wavelet Transform)为基础,根据音频信号的特征选取DWT变换域,充分利用小波变换后的低频系数向量,将二值图像的水印信息嵌入至该低频系数向量中,在保证了音频质量的同时,也有效地完成了水印的嵌入与提取,具有较好地鲁棒性。

Through DWT(Discrete Wavelet Transform)technology,this paper makes a study of digital audio watermarking by embedding watermarking information a binary image into low frequency DWT coefficients.The experiments show that the technology brings good balance between imperceptibility and robustness.