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Propose two align methods and improvements for signals from the same source whose relative position is unknown, which based on signal energy and signal similarity respectively. In this paper, algorithms were discussed in detail and through extensive testing on speech signal algorithm to improve and detailed analysis. Experimental tests indicate that, the method of iterative synchronize alignment can...
Up to now, all the wavelet transforms are inner product representation of Hilbert space. In [1,2,3,4], based on the principle of mathematics and dialectical method, a novel method-VPWT (Vector Product Wavelet Transform) is proposed and studied, it is useful for wavelet theory and signal processing. In [5,6], vector wavelet functions, vector scaling functions and biased wavelet functions are put forward,...
According to the fragile watermarking theory and insecure computer network, the integrity authentication scheme of biometric image based on singular value decomposition (SVD) is proposed for remote users via insecure computer network. We make good use of singular values of singular value decomposition (SVD) of biometric image to check the integrity of biometric image. To make authentication data,...
The frequency operator of signal is obtained in this paper. It reflects the quantum characteristics of signal. It is a linear and Hermitian operator. Eigenfunctions, eigenvalues and superposition principle of signal are researched by using the frequency operator. The frequency operator is used to prove the uncertainty principle of signal. The uncertainty principle of signal indicates that the signal...
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