Psychoacoustically-Adapted Patchwork Algorithm for Watermarking

For the digital watermarking patchwork algorithm orig- inally given by Bender et al., this paper proposes two improvements applicable to audio watermarking. First, the watermark embedding strength is psychoacoustically adapted, using the Bark frequency scale. Second, whereas previous approaches leave the samples which do not corre- spond to the data untouched, in this paper, these are mod- ified to reduce the probability of misdetection, a method called full index embedding. In simulations, the proposed combination of these two proposed methods has higher re- sistance to a variety of attacks that prior algorithms.