Correlation between PSNR and size ratio in audio steganography

Authors:
Mazdak Zamani;Azizah Bt Abdul Manaf;Shahidan M. Abdullah
Affiliations:
Advanced Informatics School, Universiti Teknologi Malaysia, Kuala Lumpur, Malaysia;Advanced Informatics School, Universiti Teknologi Malaysia, Kuala Lumpur, Malaysia;Advanced Informatics School, Universiti Teknologi Malaysia, Kuala Lumpur, Malaysia
Venue:
SITE'12 Proceedings of the 11th international conference on Telecommunications and Informatics, Proceedings of the 11th international conference on Signal Processing
Year:
2012

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Abstract

Steganography is a form of security technique through obscurity; the science and art of hiding the existence of a message between sender and intended recipient. Steganography has been used to hide secret messages in various types of files, including digital images, audio and video. The three most important parameters for audio steganography are imperceptibility (indicated as PSNR), payload (bit rate or capacity), and robustness. Any technique which tries to improve the payload or robustness should preserve imperceptibility. The noise which is introduced due to bit modification would limit payload. This paper presents the correlation between PSNR and message to host size ratio that is calculated in an experimental way.