With onset of the World Wide Web, authors of digital media can easily distribute their works by making them available on Web pages or other public forums. Anyone having access to those forums can copy the author's media. By the nature of digital media, a copy is an exact, perfect duplicate of the original.
This brings to front a potential problem. How do authors claim ownership rights of such digital media if multiple persons have exact copies?
Digital watermarking is a general solution that can be used to identify illegal copying, to other applications by inserting information about the media, the author, copyright, or license information into the digital data in an imperceptible way.
In this paper, we propose a new method to embed digital watermarking in audio files, using Discrete Wavelet Transform (DWT) and the way to extract the watermark data.
The method efficiency is measured using Peak Signal –to-Noise Ratio (PSNR) , Normalized Correlation Coefficient (NC). The advantage of our method is the robustness against several attacks and compression.
Al-Baath University Journal.
2016.
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