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안점영(Jeom Young Ahn),최영식(Young Shig Choi),어태경(Tae Kyung Uh) 동의대학교 정보통신연구소 2001 정보통신연구지 Vol.1 No.-
In this paper, we implement the speech recognition system on Windows98 environment. The system detects and analyzes the incoming speech on real time, and processes the input speech by DTW algorithm. It is designed with Microsoft visual C++ 6.0 on Windows98 environment, and the low-level audio API is used for the speech interface.
배종갑,박재호,김정석,이종혁,안점영 東義大學校産業技術開發硏究所 1989 産業技術硏究誌 Vol.3 No.-
As society becomes more complex and nuclear families are increased by innovation of science and technology, many accidents like fire and robbery happen frequently leaving factory, shop and house empty. The necessity of a system that immediately alarms accidents taking place in the empty factory, shop and house, that enables to take necessary measures on the accidents to reduce the damages, is urgently raised. To meet such a need the automatic alarm device using speech synthesis is developed. According to the results of simulation verifying the validity of this system, the sensor of which radius and angle is 10[m]and 80˚respectively can detect the emergency and the system using this sensor can inform emergency signal to the reserved place very well.
어태경,김주성,안점영 東義大學校産業技術開發硏究所 1998 産業技術硏究誌 Vol.12 No.-
In this paper, we perform the recognition experiments of Korean 100 syllables based on RPNN. RPNN is a non-linear predictor according to the time variation of a speech without an alignment procedure. In the experiments, we study on the recognition rates, by increasing the prediction order and the number of hidden unit, and by appling the PNN as recognizer. In the method 1, when the prediction order is 3rd order and the hidden unit are 10 units, the recognition rates show better result than others. The recognition rates of the method 2 are improved than its results of the method 1, especially in the method 2, when the prediction order is 3rd order and the hidden units are 5 units, the recognition rates show better result than others.
金明起,安點榮 東亞大學校 1985 東亞論叢 Vol.22 No.1
It is investigated how the pitch period, gain, and glottal wave influence the synthesized quality. Speech sounds pronounced by a male are analyzed by an autocorrelation technique, and pitch periods and gains are obtained. In the synthesis of speech sounds, the effects of variations of the pitch periods and gains on the speech quality are recognized in terms of waveforms and listening. There is little degradation in synthesized speech quality with some variation of pitch period, but much difference in the clearness and naturalness of speech with variations of gain pattern-approximations, However, it is possible to treat the variation of pitch period and that of gain respectively as piecewise linear approximations without degrading the speech quality. Five Korean vowels are resynthesized by using a simulated glottal wave with nonimpulse shape, and it is tried to find the effect of opening time and closing time of the glottal wave on the speech quality. Main results obtained are as follows: 1. It is confirmed that the glottal waves are different in waveshape depending on the kind of vowels /a, e, i, o, u/ by inverse filtering technique. 2. It is found that the synthesized speech quality is varied with the opening time and closing time of glottal wave.
피-모스 트랜지스터에서 핫-캐리어에 의한 유효 이동도와 전계 효과 이동도의 분석
이용재,안점영 東義大學校 産業技術開發硏究所 1997 産業技術硏究誌 Vol.11 No.-
In this paper, the theoretical and empirical expressions most commonly used for modeling the variation of the low field mobility and field effect mobility of p-MOSFET's are discussed. It is shown that both approaches may be harmonized, and a new physical definition of the parameters of empirical models are presented. The mobility of hot-carrier-induced degradations by direct current stress has been characterized for p-MOSFET's with thin gate oxide. The effective mobility is derived from drain conductances, while the field-effect mobility is obtained from the transconductance of current-voltages characteristics. The empirical results are analyzed that the measurement data are identical at the point of maximum slop at near threshold voltage and the other part is different, that is, the field effect mobility is the slower than the effective mobility. It is found that the effect mobility and field effect mobility in p-MOSFET's are increased by increasing stress time and decreasing channel length.