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High-Capacity and Transparent Digital Audio Watermarking using Rounding Reduced-Arc MPSK
By : Rizki Rivai Ginanjar
Date : 2018-04-06
Views : 118

ABSTRACT: In this paper, a novel high imperceptibility and capacity blind audio watermarking system based on Rounding Reduced-Arc M-Ary Phase Shift Keying (MPSK) is presented. The MPSK technique is optimized using the Genetic Algorithm. The signal samples of the audio file are divided into several frames and then transformed into the frequency domain using Fast Fourier Transform. The watermark data is embedded into the phase element of the selected samples that have been framed and transformed. Two modified modulation schemes (256-PSK and BPSK) are used for the embedding process to compare the effects of the number of m-ary used in the system. To improve the system, the Genetic Algorithm was used to obtain the best embedding parameter, which produces the most optimal output based on the perceptual quality of the watermarked audio and the robustness of the watermark. Experimental results show that the proposed audio watermarking system produces high quality watermarked audio while loading a huge amount of watermark data.
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