A blind source separation based cryptography scheme for mobile military communication applications
WSEAS TRANSACTIONS on COMMUNICATIONS
Robust audio data hiding using correlated quantization with histogram-based detector
IEEE Transactions on Multimedia
Speech watermarking for analog flat-fading bandpass channels
IEEE Transactions on Audio, Speech, and Language Processing
The multi-bit watermarking method for speech signals in the time-frequency domain
Integrated Computer-Aided Engineering
Exploring pixel-value differencing and base decomposition for low distortion data embedding
Applied Soft Computing
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A novel technique is proposed for data hiding in digital audio that exploits the low sensitivity of the human auditory system to phase distortion. Inaudible but controlled phase changes are introduced in the host audio using a set of allpass filters (APFs) with distinct parameters of allpass filters, i.e., pole-zero locations. The APF parameters are chosen to encode the embedding information. During the detection phase, the power spectrum of the audio data is estimated in the z-plane away from the unit circle. The power spectrum is used to estimate APF pole locations, for information decoding. Experimental results show that the proposed data hiding scheme can effectively withstand standard data manipulation attacks. Moreover, the proposed scheme is shown to embed 5-8 times more data than the existing audio data hiding schemes while providing comparable perceptual performance and robustness