Audio Water Marking Using DCT & EMD

Y Suresh Babu¹, P Kalpana²

^1,2TKR Engineering College, Hyderabad, India

Abstract

In this paper a new adaptive audio watermarking algorithm based on Empirical Mode Decomposition (EMD) is introduced. The audio signal is divided into frames and each one is decomposed adaptively, by EMD, into intrinsic oscillatory components called Intrinsic Mode Functions (IMFs). The watermark and the synchronization codes are embedded into the extrema of the last IMF, a low frequency mode stable under different attacks and preserving audio perceptual quality of the host signal. The data embedding rate of the proposed algorithm is 46.9–50.3 b/s. Re–lying on exhaustive simulations, we show the robustness of the hidden watermark for additive noise, MP3 compression, re–quantization, filtering, cropping and resampling. The comparison analysis shows that our method has better performance than watermarking schemes reported recently.

Keywords

• Empirical Mode Decomposition, Intrinsic Mode Function, Audio Watermarking, Quantization Index Modulation, Synchronization Code

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Cite this Article as Follows

Y Suresh Babu, P Kalpana. "Audio Water Marking Using DCT & EMD" International Conference on Systems, Science, Control, Communication, Engineering and Technology (2017): 11. Print.