International Conference on Software Technology and Engineering (ICSTE 2012)
65 Robust Watermark for Speech Coomunication
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The technique of embedding a digital signal into an speech file has gained lot of significance in recent days. Embedding very important information in the most imperceptible form by using cryptographic methods bears lot of importance from the aspect of information security and efficient data transmission. The dual purpose can be achieved with the help of a robust watermark placed on the speech file by using the spectrum of the speech signal as a secured channel. An attempt has been made to hide some text message into the low frequency region of a speech signal, thereby retaining authenticity of the speech as well as achieving transmission of text information along with.