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Data concealment in audio using a nonlinear frequency distribution of PRBS coded data and frequency-domain LSB insertion

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3 Author(s)
Cedric, T.M.M. ; Sch. of Comput. Eng., Nanyang Technol. Inst., Singapore ; Adi, R.W. ; Mcloughlin, I.

A novel method of transparent data concealment in audio-streams is discussed. The proposed system makes use of sub-band coding, least significant bit coding (LSB) and a pseudo-random bit stream generator (PRBS). A maximum of about 6% of the audio file can be used to hide data transparently with no perceptible distortion. A solution to solve the positive bias problem that is inherent in LSB encoding is also presented

Published in:

TENCON 2000. Proceedings  (Volume:1 )

Date of Conference: