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In this paper, a novel sewice that uses audio watermarking for covert communication through telephone system is presented. This system is suitable for ISDN and PSTN networks and it can be modified for using in mobile systems. We use a Direct sequence spread spectrum algorithm with perceptual modeling of HAS for embedding watermark into the audio or speech(More)
This study presents applying recurrence quantification analysis (RQA) on EEG recordings and their subbands: delta, theta, alpha, beta, and gamma for epileptic seizure detection. RQA is adopted since it does not require assumptions about stationarity, length of signal, and noise. The decomposition of the original EEG into its five constituent subbands helps(More)
Seizures are defined as manifest of excessive and hypersynchronous activity of neurons in the cerebral cortex and represent a frequent malfunction of the human central nervous system. Therefore, the search for precursors and predictors of a seizure is of utmost clinical relevance and may even guide us to a deep understanding of the seizure generating(More)
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