Audio Steganography by Direct Sequence Spread Spectrum
||International Journal of Computer Trends and Technology (IJCTT)||
|© 2014 by IJCTT Journal|
|Year of Publication : 2014|
|Authors : Rupanshi , Preeti , Vandana|
|DOI : 10.14445/22312803/IJCTT-V13P118|
Rupanshi , Preeti , Vandana. "Audio Steganography by Direct Sequence Spread Spectrum". International Journal of Computer Trends and Technology (IJCTT) V13(2):83-86, July 2014. ISSN:2231-2803. www.ijcttjournal.org. Published by Seventh Sense Research Group.
Image steganography has widely developed. There are also many algorithm developed for it. Meanwhile, the interest in using audio data as cover object in steganography can be spelled out late emergence than image data. This paper discusses the implementation of steganography in audio data using Direct Sequence Spread Spectrum method. Spread Spectrum method is often used to send hidden message through radio waves. This message is transmitted through noise-like wave. Spread spectrum (SS) technique has developed rapidly in this area due to the advantages of good robustness and immunity to noise attack. Accordingly steganalysis of the SS hiding effectively verify the presence of the secrete message in an important issue. It embeds the secret file (text, audio or image) in other carrier file. Text in image steganography is considered in this work. The proposed stegosystem uses Spread Spectrum technique which is applied in spatial domain together with error correction coding. These are used to increase the security and robustness of the system. Random location selection within the cover image pixels is also proposed in the work. Improvement has been achieved in robustness on the expense of reducing the capacity of hiding. The imperceptibility of the stego image is assessed by using peak signal-to-noise ratio (PSNR) measure. Attacks in the form of lossy compression and additive noise are considered. The performance of the proposed system has shown good immunity to moderate levels of channel noise and lossy compression ratios.
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Audio steganography, Direct sequence spread spectrum, Security key, DCT(direct cosine transfor)