Robust optimum detection of transform domain multiplicative watermarks
IEEE Transactions on Signal Processing
Optimum decoding and detection of multiplicative watermarks
IEEE Transactions on Signal Processing
Highly Robust, Secure, and Perceptual-Quality Echo Hiding Scheme
IEEE Transactions on Audio, Speech, and Language Processing
Watermark embedding: hiding a signal within a cover image
IEEE Communications Magazine
A new decoder for the optimum recovery of nonadditive watermarks
IEEE Transactions on Image Processing
Robust image-adaptive data hiding using erasure and error correction
IEEE Transactions on Image Processing
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In this paper, a semi-blind multiplicative watermarking approach for audio and speech signals has been presented. At the receiver end, the optimal Maximum Likelihood (ML) detector aided by the channel side information for Gaussian and Laplacian signals in noisy environment is designed and implemented. The performance of the proposed scheme is analytically calculated and verified by simulation. Then, we adapt the proposed scheme to speech and audio signals. To improve robustness, the algorithm is applied to low frequency components of the host signal. Besides, the power of the watermark is controlled elegantly to have inaudibility using Perceptual Evaluation of Audio Quality (PEAQ) and Perceptual Evaluation of Speech Quality (PESQ) algorithms. Experimental results over several audio and speech signals show the higher robustness of the proposed technique in comparison with a recent watermarking scheme.