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박병전,신영무,Park, Byoung-Jeon,Shin, Young-Moo 한국음향학회 1990 韓國音響學會誌 Vol.9 No.2
음향전파 측정에 상호상관법(직접법과 M계열 변조상관법)을 이용하므로서 임펄스 입력에 의한 경우와 같은 결과를 얻을 수 있다는 것과, 또 상호상관법의 특징인 외란노이즈의 영향을 줄일 수 있었던 것 등을 건축음향분야에서 측정계를 대상으로 하여 이론적으로 정리하였다. 또 이들 계측법을 응용하여 흡음재료의 사입사 흡음특성의 측정, 실의 단독 단음응답 및 잔향감쇄 과정의 측정, 음압레벨 분포, 차음성능 등을 측정하고 여러 건축음향측정에서 이들 방법이 유효하다는 것을 실험적으로 확인하였다. A method of measuring impulse response of acoustic system, two kinds of cross-correlation methods (the direct correlation method and the M-sequence modulation correlation method) were applied. According to the direct correlation method, by using stationary random noise source and by calculating the cross-correlation function between the sourece and the output signal, equivalent impulse response can be obtained not being influenced by the back ground noises. By applying this method, the measurement of echo-time patterns in rooms and oblique incident sound absorption characteristics of sound absorbing materials was carried out. In the case of the M-sequence modulation correlation method which was contrived by Aoshima, an intermittent random nosie modulated by M-sequence signal is used as the source signal, and the cross-correlation function between the M-sequence signal and the squared output signal is calculated. According to this method, equivalent energy impulse response (squared impulse response) of te propagation system can be obtained without being influenced by the back ground noises and the air fluctuation caused by wind. As the applcaition of this measuring method to the architectural acoustics, the meaurements of echo-time patterns, reverberation decays and sound pressure lev디 distributions in rooms and sound insulation efficiencies in buildings were carried out. From these experimental studies, it has been found that this M-sequence modulation correlation method is markedly useful especially for the field masurement of sound insulation under high back ground noise condition.
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獨立住宅의 外部環境 選好度에 관한 硏究 : 全州 文化村을 中心으로
朴棅栓,蔡秉善 全北大學校 1985 論文集 Vol.27 No.-
The aims of this study are to reexamine the future ideal status of the exterior environment, to examine the ideal status of the site and garden size, and to utilize the result of the possibility of this study in creating more ideal Environment of exterior space in detachment houses. The scope and method of this study are as fallows. 1. This study is based on the Perception/Cognitive/Motivation of psychology in architecture. 2. The environmental attributes through the application of bipolar sementic scale and factor analysis are focused on. The results of this study are as follows; 1. The emotional cognition is more variable than the cognitions of space organization factors. 2. The hosts of variables are nearly the same weighted values in cognitive maps, on the other hand the site and garden are the most correlated factors. 3. Major dwellers expect the ideal sites to be more than 495㎡~660㎡, and the ideal garden sizes to be more than 132㎡~165㎡, (Building coverage is 30 percent).
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아파트 단지를 대상으로 한 음환경 분석 : 음압레벨에 대한 고찰 A study of sound pressure level
박한규,박병전,안미선 전북대학교 공업기술연구소 1998 工學硏究 Vol.30 No.-
This study is to improve environment of urban area. The purpose of this study is to know the acoustic present condition about courtyard in apartment through theoretical study and an actual survey. The data in this paper which is measured by the sound level meter in a few cases of real condition. The results of study are change of SPL in direction of vertical is a shaped of parabola, and layout(height, interval of building, situation of space) of apartment is affects the acoustic present condition Keyword : sound pressure level, sound propagation, sound reflection
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