• Citations Per Year
Learn More
Analysis of the voice pronunciation mechanism and performance differences of normal voice in the frequency domain, wavelet transform is used to do signal decomposition, and emphasizing characteristics of voice, with these two characteristic parameters we recognize 242 normal voice using gaussian mixture model (GMM) respectively. Put forward wavelet(More)
Position information often achieves by direction-finder multi-stations in practice. Direction-finder multi-station Data processing is an important problem related to the problem that how to use the data correctly. In this paper we calculate the distance matrix, then analyze the relation matrix and determine the best fusion data in different ways. we know(More)
This paper uses generalized congruence function instead of transfer function of classical BP neural network, and improve convergence rate of neural network. We introduce the subsection generalized derivation, error back propagation derivation mechanism of classical BP algorithm to adjust weight vector in generalized congruence neural network, and modify(More)
General neural networks always converge to local optimal position when solving global optimal problem but dual symmetrical neural networks can overcome this shortcoming . The model and algorithms that dual symmetrical neural networks is used to solve direction finding(DF) and frequency measurement are presented in this paper, dual symmetrical neural(More)
The paper divided the whole coal life cycle, explained each phase characteristics, and took coal mine in China as a study case to assess the ecological risk in coal utilization phase. The main conclusions are as follows: (1) the whole coal life cycle is divided into coal mining, processing, transportation, utilization, and waste disposal. (2) The key points(More)