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This paper presents an adaptive detection algorithm for spread-spectrum-based audio watermarking. Aiming at the watermark adaptively embedded in the audio signal, our improvements to the correlation-based detection algorithms include the adaptive normalization coefficients for correlation calculating and the adaptive threshold for decision comparing. Experimental results show that the proposed detector...
In this work we investigated the correlation between the emission properties of Scandia doped dispenser cathodes and their surface features. A proposal for explanation of the observed phenomena has been suggested.
A new digital audio watermarking for copyright protection is described in this paper. The watermark is embedded in the time domain by taking use of spread-spectrum technique and exploiting the hearing thresholds in the psychoacoustic model. The scheme of detection is based on high-pass filtering and correlation. The decision threshold is adaptively determined according to the statistical distribution...
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