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송철,정헌상,황의봉 조선대학교 에너지.자원신기술연구소 1999 에너지·자원신기술연구소 논문지 Vol.21 No.1
This study is to increase recognition rate and to reduce processing time in the speaker recognition system. For processing time reduction we used only difference between average reference pattern and speaker's input pattern without using DTW which had been mainly used in pattern matching. For increasing recognition rate existing cepstrum weights are modified. Experimental results with ten speakers showed increase by 1.75%(95.25% from 93.5%) in speaker verification and 100% in speaker identification.
宋鐵,鄭憲相 조선대학교 생산기술연구소 1979 生産技術硏究 Vol.1979 No.-
The phenomenon of back corona generallly occurs in the industrial electrostatic precipitator when the resistivity of a precipitated layer of dust exceeds a value in the neighborhood of 5×10^(10)〔Ω-cm〕. In this paper a study is made on the relationship between electrical resistivity and chemical compositions and also on the mechanism of back corona. Components of Li, Na and Fe lower the resistivity. But, the resistivity is not the only factor of back corona. Back corona can be explained with relaxation time as tne fundamental parameter. As relaxation time is determined by some other factors rather than resistivity, new method protecting back corona call be developed.