DATA CONCEALMENT IN AUDIO USING A NONLINEAR FREQUENCY DISTRIBUTION OF PRBS INSERTION. CODED DATA AND FREQUENCY-DOMAIN LSB
Tio M. M. Cedric, Robertus Wahendro, Armstrong Ian, McLoughlin · 2000
In this paper, 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. I INTRODUCTION