Stationary wavelet transform based audio authentication technique

Authors:
Tanmay Bhattacharya;Sirshendu Hore;Nilanjan Dey;S. R. B. Chaudhuri
Affiliations:
JIS College of Engineering, West Bengal, India;Hooghly Engineering & Technology College, Hooghly, West Bengal, India;JIS College of Engineering, West Bengal, India;Bengal Engineering and Science University, Howrah, West Bengal, India
Venue:
Proceedings of the Second International Conference on Computational Science, Engineering and Information Technology
Year:
2012

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Abstract

Present work proposes a Stationary Wavelet Transformation based audio authentication technique. Audio stream is converted into two dimensional square matrix forms. 2-D signal is decomposed into four sub bands using Stationary Wavelet Transformation. HH sub band is further decomposed using Stationary Wavelet Transformation. Authenticating image is embedded within the generated HH2 sub band. During embedding, authenticating image is dispersed within the selected sub and using a random sequence and a session key. Authenticating image is extracted using the session key and the size of the image. In this approach, the generated modified audio is of acceptable level of imperceptibility and distortion compared to the original audio.