Anti-cropping synchronization audio digital watermark algorithm based on watermark sequence number

A new blind digital audio watermarking scheme is presented in this paper. In order to combat against cropping effectively, synchronization codes and watermark sequence numbers are embedded in DCT domain. The virtue of the method, compared with other synchronization algorithms, is that it can recover the watermark according to the original structure effectively under cropping attack. Satisfying imperceptivity of the watermark signal can be reached by adjusting the strength of data hidden into audio. The experimental results show that the watermarking scheme is robust against attacks such as cropping, Gaussian noise corrupting, re-sampling, and re-quantizing