Lossless Adaptive Digital Audio Steganography

This paper presents a lossless adaptive digital audio steganographic technique based on reversible two and higher dimensional integer transform. The adaptive technique is used to choose the best blocks for embedding perceptually inaudible stego information, and to select the best block sizes to maximize the number of blocks/capacity. The stego information is embedded in the integer domain by bit manipulation. In addition, we intro- duce a capacity measure to select audio carriers that in- troduce minimum distortion after embedding. The above technique is also applicable to compression based audio formats, such as MPEG audio layer-3 (mp3).