Robust and Secured Digital Audio Watermarking

This book deals with the digital audio watermarking copyright assurance. The watermarking data that will be utilized incorporates text messages, copyright audio, written by hand marks, and cell phone numbers. The purpose behind this is they are more instructive contrasted with pseudo irregular groupings. The watermarking data will be encoded before embedding it in the audio. DSSS algorithm is used to increase the security of this system. The embedding process of the watermark information is performed in the frequency domain rather than the spatial domain. The combination of DWT, SVD, and DFT methods will be utilized for this reason. The watermarks ought to be imperceptible and make insignificant contortion to the host audio. The main objective of this research is to propose a new algorithm that can embed and extract the watermarking information and fulfill the above prerequisites. The execution of the newly proposed algorithm will be surveyed by testing them utilizing a group of various audio file types and against various attacks.

This chapter contains the introduction of digital watermarking, various types of digital watermarking, why watermarking is required, and various application areas where watermarking is useful. Various data hiding methods are also discussed. The basic principle of watermark embedding and watermark extraction is also explained. Watermarking classification depending on the various parameters and also the classification of watermarking is explained in this chapter.

This chapter depicts the overall information about the various algorithms and techniques available for digital watermarking and it also covers the emerging issues in the existing algorithms. This chapter contains the working strategy of different spatial domain and frequency domain techniques like DWT (discrete wavelength transform), DCT (discrete cosine transform), SVD (singular vector decomposition), and LSB (least significant bit). In this chapter, aside from giving more attention just to those papers, which are identified with this proposal work, the mind has been taken to cover increasingly up and coming ideas. After that, the deficiencies and the open doors for the exploration work are recognized and in view of those, inquiries about issues are produced by giving appropriate supports.

In this chapter, the problem statement is identified by exploring and studying various existing methods. In this research, the main objective is to provide the robust and secured watermarking algorithm which can stand against the various malicious attacks by the attackers. And also, it maintains the quality of the original audio data as well as the watermark data.

After discussing all these, our main research discussion starts from this chapter, in that digital audio watermarking algorithm is discussed. Initially, based on the survey done, the various methods available for digital audio watermarking are taken for consideration. From those methods, we found one approach that is relatively better than other approaches are proposed. It is based on the combination of DWT and SVD methods. So, we have implemented that algorithm first and found that it is better but still there are some improvements needed in that to increase the robustness because we found that this algorithm is not fitted for some kind of attacks as well some different types of watermark images. After that, we compare our results with existing methods and we found better results than other methods. But still, some improvements are needed in our work like in echo attack it is not giving the desired result. So, again we proposed another new approach that is the combination of DWT and SVD with DFT to increase the robustness and DSSS algorithm to provide the security to our algorithm. Our results show tremendous improvement against various malicious attacks and also improved the robustness.

This chapter describes the results produced by the new algorithm and also performance analysis by comparing all the results with the existing algorithms has been discussed.

In this chapter, overall summary of the proposed work is described and also the scope of future work in this domain is discussed. At last in the bibliography section, all the papers which are referred for this work are listed and also the publication information for this research work is given.