DCT域音频水印算法的嵌入位置选择策略

本文在DCT最大误差模型研究的基础上提出了一种新的音频水印嵌入位置选择策略。建立了水印嵌入位置和嵌入水印后的音频文件的听觉感知性之阿的关系，根据音频水印的不可听性的要求选择最优的嵌入位置，然后选择不同的水印强度调整鲁棒性，从而最大程度地保持音频水印的不可听性和鲁棒性，为解决音频水印嵌入过程中不可听性和鲁棒性之间的矛盾提供了一种策略。

Choice Approach for Embeddable Position of Audio Watermarking in the DCT Domain

A new choice approach for embeddable position of audio watermarking scheme in the DCT domain based on research of IDCT maximum error modal is proposed. A math relationship between the watermark embeddable position and the audible quality of the audio file with watermark is set up. First the optimal position to be embedded based on the inaudible requirement is selected. Second the power coefficient of watermark is adjusted to satisfy the requirement of robustness. So the utmost need of inaudible and robust of audio watermarking scheme was filled. It is a good approach to settle the trade-off between the two requirements of audio watermarking; inaudible and robustness.