15-05-2013, 04:43 PM
DATA HIDING IN AUDIO SIGNAL ABSTRACT
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ABSTRACT
The fast improvement of the Internet and the digital information revolution caused major changes in the overall culture. Flexible and simple-to-use software and decreasing prices of digital devices (e.g. portable CD and mp3players, DVD players, CD and DVD recorders, laptops, PDAs) have made it feasible for consumers from all over the world to create, edit and exchange multimedia data. Broadband Internet connections almost an errorless transmission of data helps people to distribute large multimedia files and make identical digital copies of them. In modern communication system Data Hiding is most essential for Network Security issue. Sending sensitive messages and files over the Internet are transmitted in an unsecured form but everyone has got something to keep in secret. Audio data hiding method is one of the most effective ways to protect your privacy.
General principles of data hiding technology, as well as terminology adopted at the First International Workshop on Information Hiding, Cambridge, U.K. A data message is hidden within a cover signal (object) in the block called embeddor using a Stego key, which is a secret set of parameters of a known hiding algorithm. The output of the embeddor is called stego signal (object). After transmission, recording, and other signal processing which may contaminate and bend the stego signal, the embedded message is retrieved using the appropriate stego key in the block called extractor.