기동함정의 소음분석 및 유사 방사음 발생기의 설계

윤병우,송종관,신종욱 한국융합신호처리학회 2004 융합신호처리학회 논문지 (JISPS) Vol.5 No.2

기동하는 잠수함이나 함정 등의 방사 소음 특성은 토날 신호와 광대역 배경잡음으로 구분된다. 토날 신호는 함정의 모터나 엔진의 회전등으로 인한 것이고, 배경잡음은 기동 시 일어나는 함정 주변의 기포들의 발생과 소멸로 인한 것이다. 본 연구에서는 ATW 알고리즘을 이용하여 수중 기동함정의 방사소음을 분석한다. 또한 분석한 소음을 바탕으로 힐버트 변환을 이용하여 광대역 유사 잡음을 발생시킬 수 있는 시스템을 설계하고 분석한 토날 신호를 합성함으로써 유사 방사 잡음 발생 시스템을 설계한다. 이 시스템은 현장 기동함정과 유사한 소음을 발생시키게 함으로써 적으로부터 아군의 함정이 노출되었을 때 기만기로 사용함으로써 적의 어뢰 등의 공격을 피할 수 있는 시스템으로 활용할 수 있을 것이다. The noise characteristics of the submarines and vessels are composed of tonal signals and background noises. Tonal signals are from the revolution of the motors or engines, and background noises are from the generation and disappearing of the bubbles around the vessels. We analyze the noises from maneuvering underwater vessels with ATW algorithm. We design broadband asymptotic noise generator using Hilbert transform and design the system which can generate asymptotic noise with sum of generated background noise and synthesized tonal signals. This system can be used as a cheating system from the torpedo shacks.

기동함정의 유사방사음 합성기 설계

윤병우 경성대학교 생산기술연구소 1997 생산기술연구지 Vol.4 No.-

In the analysis of underwater acoutic signal source and design of similar signal synthesizer, underwater acoustic signal was obtained by A/D converter. The obtained signal was separated to tonal components and broadband noises by the ATW algorithms. The noise generation filter, which can generate the noises similar to the analyzed broadband background noise, was designed by Hilbert Transform. After that, the system which can generate the signal which is similar to moving vessel noises is designed by synthesizing the generated noises and the analyzed tonal components. This system can be used to field maneuvers, and it can cheat enemies and escape from the tropedo attacks.

A Case of Recurrent Ischemic Strokes in a Non-HIV Patient due to Kaposi's Sarcoma

윤병우,이유경,황성진,김현이,이혜경,김동춘 대한내과학회 2020 대한내과학회 추계학술대회 Vol.2020 No.1

LA1883을 이용한 AM/FM 튜너의 설계

윤병우 慶星大學校 1998 論文集 Vol.19 No.1

LA1883 is a chip which includes FM front end circuits, intermediate frequency transforming circuits, noise canceller, MPX, and AM/FM exchanging switch. In this paper, AM/FM tuner system is implemented with LA1883 chip which can be used at car stereo system. At the implemented FM tuner, the actual sensitivity was 8dB, and signal to noise ratio was 55dB. At the AM tuner, the actual sensitivity was 26dB and signal to noise ratio was 46dB.

심포지움 4: HMG-CoA reductase inhibitors: new aspects; 뇌졸증 예방과 스타틴

윤병우 한국지질동맥경화학회 1999 韓國脂質學會誌 Vol.9 No.3

단일칩 마이크로컴퓨터를 이용한 LCD컨트롤러의 개발

윤병우 慶星大學校 1998 論文集 Vol.19 No.2

The system which can display korean and english fonts at 320x240 dots LCD with SED1330F LCD controller. The implemented fonts size of korean are 16 x 16 pixels, and english are 8x16. The microprocessor which controls SED1330F is 80C51. The implemented system may be used as the display equipment of automatic control system and various terminals.

수중 기동표적의 방사소음 분석 및 유사 신호발생기의 설계 ( Analysis of Radiated Noises of Underwater Maneuvering Target and Design Similar Singnal Generator )

윤병우,양진영,김성태,신윤기,박의연 대한전자공학회 1991 대한전자공학회 학술대회 Vol.1991 No.7

만성중이염이 동반된 고위경정맥구에 의한 박동성 이명의 수술적 치험 1예

윤병우,오세준,공수근,고의경 대한이비인후과학회 부산,울산,경남 지부회 2016 임상이비인후과 Vol.27 No.2

A high jugular bulb is often found as an incidental finding that is asymptomatic. High jugular bulb dehiscence may often cause pulsatile tinnitus. We report one case of pulsatile tinnitus due to dehiscent high jugular bulb and chronic otitis media, which has been successfully treated by surgical reconstruction with tragal cartilage and soft tissue.

TMS320C541 DSP를 이용한 MP3 디코더 구현

윤병우 한국융합신호처리학회 2003 융합신호처리학회 논문지 (JISPS) Vol.4 No.3

MPEG-1 오디오 표준은 고음질 디지털 오디오 신호의 압축 알고리즘이다. 이 표준은 인코더와 디코더의 기능을 규정하고 있고, 인코더와 디코더 알고리즘의 복잡도와 성능에 따라 세 가지 다른 계층으로 분류된다. 본 논문에서는 MPEG-1 오디오 계층3(MP3) 디코더를 고정소수점 DSP인 TMS320C541 칩으로 구현하였다 MP3 알고리즘은 인간의 청각구조의 심리음향 특성을 이용하는 알고리즘으로 인간의 귀에 들리지 않는 주파수의 성분은 미리 제거함으로써 데이터의 량을 줄이면서 음질의 손실을 최대한 줄이는 알고리즘이다. 이 알고리즘은 다이나믹 레인지가 매우 크기 때문에 고정 소수점으로 구현하기가 쉽지 않다. 본 연구에서는 가중 참조표를 적용하여 계산량을 줄이고 다이나믹 레인지 문제를 해결함으로써 고정 소수점 DSP칩을 이용하여 실시간 시스템을 구현하였다. MPEG-1 audio standard is the algorithm for the compression of high-qualify digital audio signals. The standard dictates the functions of encoder and decoder pair, and includes three different layers as the complexity and the performance of the encoder and decoder. In this paper, we implemented the real-time system of MPEG-1 audio layer III decoder(MP3) with the TMS320C541 fixed point DSP chip. MP3 algorithm uses psycho-acoustic characteristic of human hearing system, and it reduces the amount of data with eliminating the signals hard to be heard to the hearing system of human being. It is difficult to implement MP3 decoder with fixed Point DSP because of it's broad dynamic range. We implemented realtime system with fixed DSP chip by using weighted look-up tables to reduce the amount of calculation and solve the problem of broad dynamic range.

L.v. Beethoven Piano Sonata Op.2,No.1의 暗譜을 위한 分析硏究 : 제1악장을 중심으로

尹柄祐 서울市立大學校 1990 論文集 Vol.24 No.-

The memorizing of music scores is a critical element for playing piano among other important musical factors. Without a confident memorization, a pianist can not be competent and often fails to complete a performance. This simple fact is nothing but a common sense, which is not, however, clearly recognized and well-practised. The memorizing of piano music scores is more difficult than that of monophony scores. The reason is that the piano as a musical instrument is not a simple monophony instrument, but plays polyphony music. Therefore piano music scores have features of condensed form of a chamber music or a symphony at times. The scores of piano music can be hardly memorized before a thorough analysis of the composition technique, regularity and harmony. Another essential element for a food piano playing is the fingering method. The rational and economical fingering can enhance the musical effect. Hence the continued search for a good fingering will improve both performance ability and musical effect. In addition to the memorizing of scores, it is also important to memorize the playing method concerning musical expression marks, dynamics, articulation and phrasing. The memorization of playing method is essential to convey the vitality of the composition. Otherwise, a pianist can only repeat a dull mechanical array of scores on the keyboard without his or her own interpretation of the composer's intention. The practice of memorizing music scores should not begin with a complicated piece of large-scale. It would be desirable to start from simple pieces and then move to sophisticated ones. As for a large-scale piece, and attempt to memorize the entire scores at once is not preferrable. A more productive method is to break it into several smaller segments for an easier memorization. Once accustomed to this method of practice, one can readily memorize a long sophisticated piece. Such an effort of score memorization will help to deepen the understanding of a musical effect of score memorization will help to deepen the understanding of a mucial composition. moreover, the pianist can increase his or her confidence and produce a greater musical effect in actual performance. A thorough examination and careful analysis of music scores leads to an unmistakable memorization which in turn insures a dynamic performance. As for an analysis, the present paper takes Beethoven's piano sonata, Op. 2, No. 1, which is not large in scale, but requires a variety of techniques. A mastery of this sonata can be made possible with the memorization of the scores as suffested so far.