A Blind Watermarking Algorithm for Audio Signals in Multi-Resolution and Singular Value Decomposition

The copyright protection of multimedia now-a-days is a big challenge due to advancement in information technology. The issue of protecting copyright of audio signals has been addressed in this paper by designing an audio watermarking algorithm using DWT-SVD domain. This paper proposes a blind, secure and robust audio watermarking algorithm which is focused on hiding data using SVD transformation of audio signal in DWT domain. In this paper, each bit of watermark is hidden in the audio signal using mean quantization so that more bits can be hidden while maintaining good audible quality of the signal. This proposed technique is robust to numerous audio attacks and the efficiency of the proposed algorithm has been proved by simulation results. The comparison of the proposed audio watermarking algorithm and the existing audio watermarking algorithms is an indication of goo performance of proposed algorithm in terms of imperceptibility and robustness at a very large payload of 6553.6 bps