Digital Audio Watermarking

Security has always been a major concern for human from very ancient age to this new age of science. The aspect and meaning of security is kept on changing from day by day as the science and technology changes. Now a day’s internet has been converted into a very big market place where everything is available for buying and selling again we can’t ignore the importance of an internet for the promotion of our ideas or our product. How we can protect our Data from an unauthorized copying and distribution over internet this is the main driving force for the development of a technology called watermarking. Watermarking is a technology in which we add some watermark(for example data ,picture, any random numbers) with the original host signal(Text, Audio, Video) in such a way that it will not affect the quality of an original signal as well as the added watermark should be robust against various intentional or unintentional signal processing attacks.