Bisynchronous approach in audio watermarking based on quantization discrete wavelet transform
基于量化小波变换的双同步音频水印方法

A bisynchronous approach was proposed for audio watermarking. The bisynchronous process consisted of self-synchronization and additive synchronization. A kind of synchronous valley was created for watermark location through five features drawn from audio carrier. Following the synchronous valleys, the additive synchronous approach was adopted to locate the usable watermarks. Meanwhile, an adaptive matching approach was stated to obtain the final watermark from several candidates. The bisynchronous algorithm was robust against most common signal processing and attacks, such as re-sampling, re-quantization, MP3 compression, echo delay, Gaussian noise corruption and cropping. It also can be against some of low pass filtering attacks.