Exploring Reversible Digital Watermarking in Audio Signals Using Additive Interpolation-error Expansion

Digital watermarking is a technique that embeds information into a digital signal. Reversible watermarking is able to restore the original signal without distortion after data extraction, this property is useful in several application as military communications and legal evidence. In this paper, a reversible watermarking scheme using an interpolation technique is proposed. From experimental results the high capacity and auditive transparency of the proposed scheme are shown. In order to increase the payload, a multi-embedding approach is explored. Finally, a new subject for research is discovered.