ABSTRACT: Digital audio watermarking is a technique for embedding additional data along with audio signal. Embedded data is used for copyright owner identification. Audio watermarking schemes rely on the imperfection of the Human Auditory System. However, human ear is much more sensitive than other sensory motors, hence watermarking of audio signals is more challenging compared to the watermarking of images or video sequences. This paper surveys the general audio watermarking schemes which are classified according to the domain where the watermark is embedded. Detail descriptions of some of the popular audio watermarking schemes and the steps involved in implementing them are discussed. These schemes exploit different ways in order to embed a robust watermark and to maintain the original audio signal fidelity, which are the essential features required in an audio watermarking system. Review of previous papers published has been done to understand the proposed techniques, advantages and disadvantages associated with the techniques involved in audio watermarking.
Intl. Conf. on Emerging Trends in Soft Computing and ITC-SCITC 2011, Guru Ghasidas Vishwavidyalaya, Bilaspur, India, Mar 16-17,2011, Bilaspur; 01/2011