Abstract This paper presents an efficient data hiding technique where the encrypted secret message has been hidden into digital audio based on modified Exploiting Modification Direction (mEMD) technique. We put an effort to minimize the bit alterations introduced in the host audio signal during data hiding process. The proposed scheme confirms that the maximum change is less than 6.25% of the related audio sample and the average sample level error is less than 3%. The experimental results ensure that the method has a higher embedding capacity (88.2 kbps), maintaining imperceptibility (Object Difference Grades are between-0.10 and-0.31) and offer robustness against detection of intentional or unintentional audio signal attack detection. Based on imperceptibility, security, robustness, and embedding capacity- performance has been evaluated.

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[33] Zhang X. and Wang S., “Efficient Steganographic Embedding By Exploiting Modification Direction,” IEEE Communications Letters, vol. 10, no. 10, pp. 781-783, 2006. Krishna Bhowal is a research scholar in University of Kalyani, India. He is presently working as an Assistant Professor at Academy of Technology, Kolkata, India. His area of interest includes Audio Steganography, Watermarking, and Cryptography. He has published 9 research articles in various journals and conferences. Debasree Chanda obtained her Ph.D in Engineering from Jadavpur University in the year 2005. She is presently working as Associate Professor Rank at the Dept. of Engineering and Technological Studies, University of Kalyani. Her area of research includes Microstrip Antenna, microstrip Filter, Frequency Selective Surfaces. Susanta Biswas obtained his Ph.D in engineering from Jadavpur University in the year 2004. He is presently working as Associate Professor Rank at the Dept. of Engineering & Technological Studies, University of Kalyani. His area of interest includes, Artificial Neural Network, Image Processing, Frequency Selective Surfaces, Microstrip Antennas. Partha Sarkar obtained his Ph.D in Engineering from Jadavpur University in the year 2002. He is presently working in the rank Professor at the Dept. of Engineering and Technological Studies, University of Kalyani. His area of research includes Microstrip Antenna, microstrip Filter, Frequency Selective Surfaces and Artificial Neural Network. He has contributed to numerous (more than 270 publications) research articles in various journals and conferences of repute.