Anti-Synchronization Audio Watermarking Algorithm Based on Absolute Mean Quantization and Parameter Estimation

The paper proposes an anti-synchronization audio watermarking algorithm based on absolute mean quantification and parameter estimation, and combines implicit synchronization technology and explicit synchronization technology, for implementing precise positioning of feature points. By theoretical analysis and experimental results of quantification scheme, the paper designs a multi-valued quantification based on absolute mean. For de-synchronized attack such as time scaling, undersampling and spring attack, the paper proposes a TSM parameter estimation algorithm for audio recovery to implement resynchronization of watermark embedding and watermarking extraction. The simulation experiment indicates that the algorithm in the paper not only has great robustness for conventional attack, but also can effectively resist de-synchronized attack.