Audio watermarking for copyright protection of digital audio data

A novel audio watermarking algorithm is presented as a means of protecting unauthorised copying of digital audio data. The proposed watermarking scheme includes a psychoacoustic model to achieve perceptual transparency after carrying out an embedding and whitening procedure before correlation in detection to extract the copyright information without requiring access to the original signal. It is shown that the proposed scheme is robust and introduces no audible distortion after watermark insertion.