Abstract:
Digital watermarking is the process of embedding copyrighting information into digital media frame, such as text, image, audio and video. They are preferred to be imperceptible to the end user. The need for watermarking arises because of the inherent ease with which digital data can be copied and manipulated.
Digital watermarking find application in areas like copyrighting of information, authentication of data, tracing of illegal copies etc. Audio watermarking refers to applying watermarking on audio signals. The knowledge of the human auditory system i.e. psychoacoustics is of great importance in audio watermarking. This aspect of audio watermarking necessitates it to be treated as a separate topic.
Current watermarking techniques are mainly concerned with spread spectrum type of watermarking.Source: www.newtechpapers.com
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