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High Capacity and Resistance to Additive Noise Audio Steganography Algorithm

Author(s): Haider Ismael Shahadi | Razali Bin Jidin

Journal: International Journal of Computer Science Issues
ISSN 1694-0784

Volume: 8;
Issue: 5;
Start page: 176;
Date: 2011;
Original page

Keywords: Audio Steganography | Wavelet Packet Transform | Block Matching | Robust Stego-algorithm | High capacity Steganography. | IJCSI

Steganography is the art of message hiding in a cover signal without attracting attention. The requirements of the good steganography algorithm are security, capacity, robustness and imperceptibility, all them are contradictory, therefore, satisfying all together is not easy especially in audio cover signal because human auditory system (HAS) has high sensitivity to audio modification. In this paper, we proposed a high capacity audio steganography algorithm with good resistance to additive noise. The proposed algorithm is based on wavelet packet transform and blocks matching. It has capacity above 35% of the input audio file size with acceptable signal to noise ratio. Also, it is resistance to additive Gaussian noise to about 25 db. Furthermore, the reconstruction of actual secret messages does not require the original cover audio signal.
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