A Synchronization Algorithm Based on Moving Average for Robust Audio Watermarking Scheme

A synchronization code improvement scheme based on moving average is proposed for robust audio watermarking in the paper. Prior work has shown that the synchronization code scheme based on moving average is robust, but it was suitable for the same rule was adopted in embedding watermark and synchronization code, and the imperceptibility and the search efficiency isn’t be paid attention to. Hence, in this paper, we improved the original scheme. The main contribution of this paper is as following: (1) improve the algorithm in surviving from desynchronization attack, (2) improve the scheme in inaudibility, (3) optimize the choice of parameters, (4) analyze the imperceptibility of the scheme, and (5) comparison of robustness and search efficiency with other synchronization code schemes. The experimental results show that the proposed watermarking scheme maintains high audio quality and is robust to common attacks such as additive white Gaussian noise, requantization, resampling, low-pass filtering, random cropping, MP3 compression, jitter attack and time scale modification. Simultaneously, the algorithm has high search efficiency and low false alarm rate.