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A three-layer medium model set up according to the theory of electromagnetic emission of coal or rock body fracture with taking a vertical electrical dipole in the middle layer as the emitter is analyzed by the Counter-Propagation Deduction (CPD) method. The analytical expressions of Hertz vector and the magnetic field strength in the middle layer are obtained. The results may help to locate the area...
Blind source extraction (BSE) algorithm based on linear prediction model can be used to separate speech signals. The best advantage of this algorithm is that it is very simple and easy to compute. This algorithm is based on the fact that speech signals can be modeled by linear prediction process. But homotopy non-linear model is better than linear prediction model for speech signals. A new BSE algorithm...
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