Among the development of digital watermarkings in a various multimedia, digital audio watermarking provides a special challenge because the human auditory system (HAS) is extremely more sensitive than a human visual system (HVS) [2].
Watermarking provides a possible solution to ensure and safeguard copyright and intellectual property rights for online multimedia content.
For multimedia document, watermarking provides many advantages; however, its vulnerability due to attacks using signal processing methods offers challenge in designing robust techniques.
Digital watermarking provides a way to imperceptibly embed digital information into both digital (images, video, audio) and conventional (printed material) media contents.
House Beautiful had begun using the watermark technology, provided by a company called Digimarc, on its editorial pages last summer, and for the first time has expanded the codes to its ad pages.
To confirm the findings, the resulting extracted watermarks are provided in Figure 5. Table 2 Performance over various durations Attacks 00 01 38 00:02:20 00:04:08 BER CC BER CC BER CC a. AddBrumm 2.44%0.900.90%0.963.88%.88% 0.85 b.
In the context of intellectual property protection, a watermark that provides unique identification of a digital artifact is termed fingerprint, and the artifact that carries it is said to be traceable.
Since the early days of watermarking, it was argued that additive Gaussian distributed watermarks may provide a certain level of resistance to colluders [12].
The time domain-based solutions (such as LSB schemes [5] and echo hiding [6]) usually have a low computational cost but somewhat sensitive to additive noises, while the frequency domain watermarking methods provide a satisfactory resistance to audio processing operations by watermarking low-frequency component of the signal.
Based on the watermark embedding locations provided by the key, each of the wavelet coefficients, obtained in Step 1, is quantized into the symbol "0" or "1", using the same quantization function employed during the embedding process, namely, (6).
