Research On Digital Audio Watermarking Algorithms

The digital audio watermarking offers a solution to copyright violation problems. The digital audio holds a greater proportion in the multimedia products, and thus digital audio watermarking research is of much practical significance. Studying the transparent and robust digital audio watermarking algorithms is one of the goals in audio watermarking.The following problems have existed in digital audio watermarking and need studying further:â'ˆThere are less solutions of spatial domain algorithm of the digital audio watermarking.â'‰There are many documents about wavelet transform of the digital audio watermarking algorithm, but there are a lot of deficiencies. For instance: some algorithm is not blind detection or robust character is insufficient.â'ŠThere are less solutions of cepstrum transform algorithm of the digital audio watermarking. Up to the present, there are few research documents about the digital audio watermarking on the basis of cepstrum transform,while among the research documents that have been published, the complex cepstrum transform realization still presents many problems.Based on the analysis, comparison and test of existing digital audio watermarking algorithms, some digital audio watermarking algorithms are proposed and improved as following:â'ˆThe digital audio watermarking time-domain algorithm based on energy comparison. Compared with the LSB algorithm, the robustness of this algorithm is stronger; Compared with the echo hiding algorithm, the detection watermarking of this algorithm is easier, the calculation is simpler; Compared with the time-domain algorithm based on psychoacoustic masking, the calculation complexity is relatively low, the transparency does not rely on experience value, and the embedding amount is larger.â'‰The information hiding algorithm based on amplitude comparison. This algorithm can embed the watermarking (secret information) in the audio cover to the maximum extent.â'ŠThe digital audio watermarking algorithm based on DWT. Compared with the...