Enhanced Watermark Detection Model Based Echo Hiding Technique

Initially, Internet was a tool in the world of research and science. Information was exchanged between universities and institutions and contributed to deepen our knowledge. Today, the explosion of popularity of the World Wide Web has accelerated the development of the Internet as an information and communication resource for consumers and businesses. It has become a great way to communicate exchange, work, meet, learn and even trade. However, Piracy has also grown and causes much more harm to the intellectual property owners, who found themselves losing the revenue that would have been gained if they had the legitimate product been purchased. To fight piracy and contribute to intellectual properties protection digital watermarking researchers develop many techniques to hide special signals into original digital content in such a way that it would be used as a proof to support ownership claims. These techniques are related to text, image, video and audio contents. In this paper, we completed a non-blind audio watermarking design based on echo hiding technique. To achieve this, the audio signal of a music recording, an audio book or a commercial is slightly modified by introducing echoes with appropriate delays. In detection process, we used polynomial-based scheme as an alternative to cepstrum-based one that is commonly used in literature [1]. In our method, the quality of watermarked audio tracks is enhanced as the echo is much more attenuated in comparison to the classical echo hiding approaches. The bit rate of the embedded information is increased as both attenuations and delays could be used for embedding watermarks. Simulations show good detection results.