Digital Audio Watermarking Algorithm Based on Quantizing Coefficients

A kind of digital audio watermarking algorithm based on discrete wavelet transform (DWT) is proposed in the paper. In the paper, we adopt remote sensing image as watermarking image (such as satellite image). In order to enhance the remote sensing image into the audio, watermarking information is dealt with error diffusion method which is one kind of half-toning technique. Using chaos sequence for synchronization code and embedded it into audio with the water-marking, the watermarking thus has the ability of selfsynchronization. The algorithm quantizes the lowestfrequency coefficients of DWT of the audio signals, so that the watermarking can be detected in a blinding way. The experimental results indicate the algorithm is robust to Gauss-yawp, loss compression and more than 12 attacking means by stirmarkaudio attacking software.