An audio watermarking using MATLAB / Illya Azilan

The growth of computers and the Internet has made it easier for unauthorized copying, duplication and distribution of digital media. An example of the digital media is audio, video, images and many more. In order to solve these problems, watermarking technique had been used as an alternative to protect the digital media from having unauthorized copying and distributed without granting any permission from the owner. Watermarking is a technique used to label digital media by hiding copyright information into the original data. This research focuses only on audio watermarking. The audio watermarking gives an audio to have better security protection after being embedded. This research used the Discrete Cosine Transform (DCT) technique in non-blind watermarking which provides better quality result for a watermarked audio. Furthermore, by using this technique, watermarked audio
would have the same quality as the original audio. In this research, the audio format that being used is Windows Wave (WAV). This research had been done in order to test the quality watermarked audio by using Signal to Noise Ratio (SNR). Through the testing had shown that watermark audio that embed TIFF image has a better SNR value compare with the watermark audio that embed JPEG image. Therefore, a watermark audio is produced in order to have a copyright protection from illegal distribution. The recommendation future works may use others audio file extension for embedding and extracting procedure.