• Proceeding of Spring/Autumn Annual Conference of KHA
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• 2003.11a
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• pp.59-65
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• 2003

The present article has the purpose of evaluating subjective response of Won Buddhism sanctums by psychoacoustics experiment. Furthermore, basing on this experiment, the present article makes a suggestion of a physical sound-evaluating index. To achieve the purpose, I conducted an psychoacoustics experiment at 6 sanctuaries out of the representing 40 sanctuaries of Won Buddhism sanctums, which size is bigger than 1,000 m$^3$. I made a reanalysis with 3 Buddhist sanctums out of the subjects of psychoacoustics experiment which are generally rated superior. From the result, I can make each evaluation type into two types, sound clarity and space sense of sound. Also, I make various suggestions of physical parameter, with which I can evaluate the proper sound condition for Won Buddhism sanctums.

• Proceeding of Spring/Autumn Annual Conference of KHA
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• 2004.11a
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• pp.355-360
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• 2004

This study is a research that evaluates and analyzes on the subjective reaction of Won buddhism small sanctum through psychoacoustics experiment. For doing it, after choosing of 5 Won buddhism small sanctums of which its building volume at $400m^{3}{\sim}650m^{3}$, a psychoacoustics experiment has been conducted. Based on those A, B, C, E temple-halls which appeared as higher than 'average' in the result of subjective reaction evaluation of the Won buddhism small sanctum through psychoacoustics experiment, it could be classified as the conclusion of the factor analysis: the first factor is 'space sense of sound', the second factor is 'intimacy-feeling with sound' and the third factor is 'clearness of sound', respectively.

• Proceedings of the Korean Society for Emotion and Sensibility Conference
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• 2002.05a
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• pp.101-106
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• 2002

최근 사무환경에서 컴퓨터 사용시간이 급증함에 따라 컴퓨터 소음의 불쾌감으로 인한 저소음형 컴퓨터에 대한 요구가 증가하고 있다. 이에 따라 효율적인 소음조절을 위하여 컴퓨터 소음에 대한 실태 조사를 위하여 설문조사를 실시하였으며, 물리적 측정치와 더불어 심리음향학적 각종 파라메타를 계산하였다. 또한 일반적 업무 Task가 주어진 상태에서 컴퓨터 소음에 대한 근무자의 상하한계치 설정을 위한 청감실험을 실시하였다. 설문조사 결과, 가장 시끄럽게 인식되는 소음은 팬소음(사용자 컴퓨터)과 키보드 사용음(타인 컴퓨터)으로 나타났으며, 약 55%의 사용자들이 보통 컴퓨터 소음에 대해 시끄럽게 느끼고 있는 것으로 나타났다. 또한 현재 사용중인 컴퓨터의 소음에 대해 사용자의 약 20% 정도만이 조용하게 느끼며, 컴퓨터 소음이 업무효율을 떨어뜨린다는 응답도 약 35%로 나타났다. 팬소음, CD-Rom 구동음, HDD 작동음에 대해 청감실험을 실시한 결과, 각 소음의 상하한치는 각각 31∼51dB(A), 34∼54dB(A), 34∼58dB(A)로 나타났다.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2005.11a
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• pp.666-669
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• 2005

Social noise survey and auditory experiment on residential noises such as floor impact, air-borne, bathroom, drainage and traffic noises were conducted to classily a noise insulation Performance in apartment building. The survey results showed that annoyance among subjective responses to residential noises was most greatly affecting to satisfaction with noises. In the survey, boundary limit between satisfaction and dissatisfaction was also determined. Auditory experiments was also undertaken to determine noise insulation performance according to the percent of satisfaction for individual noise source. Result of auditory experiment showed that the noise insulation performance for floor impact, airborne, drainage and traffic noise corresponding to 40 % satisfaction is 49 dB (L$_{i,Fmax,AW}$), 48 dB (R'w), N-41, and N-40, respectively. Finally, classes of noise insulation performance in apartment building were proposed according to satisfaction with noises

• The Journal of the Acoustical Society of Korea
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• v.15 no.6
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• pp.66-72
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• 1996

In order to the sound effects and acoustics estimation of PANSORI hall, we are researched into the impulse response measuring and convolution integral of dry music(PANSORI) by using 1/10 scale model. Results are as follwo. First, impulse responses are measured by spark sound of electrodes and it is absolutely necessary many times of synchronous calculating for the obtain to enough S/N ratio. Second, a simulation technique of scale model is confirmed one of an effectual method of indoor acoustics estimation. Further, using the these new techniques and hearing test, its are recognized that reverberation time of PANSORI hall is about $1.0{\sim}$12.$ second suitable.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2006.05a
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• pp.862-869
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• 2006

The purpose of this study is to propose the proper vocabularies for evaluating H.D TV set fan noise in residential condition. To achieve this goal, psycho-acoustic experiments were carried out with TV set fan noise modulated at specific frequency band. finally, a correlation analysis between vocabularies, and a factor analysis of psycho-acoustical responses were conducted. As a result of this study, followings are suggested. Analyzing the psycho-acoustical response corresponding to the various sound level, the higher the sound levels, the higher the response values were. It is estimated that the sound level determined psycho-acoustical responses. On the degree of response to fan noise, the initial level of negative feeling is located on $35{\sim}40$ dB(A). The factor of evaluating H.D. TV set fan noise has induced three the appropriate korean adjectives; Irritate, Monotonous, stuffy and dryness. The result of this study may be used to evaluate the acoustic threshold level for indoor noise or a basis for specifying the desired acoustic environment of dwellings.

• Transactions of the Korean Society for Noise and Vibration Engineering
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• v.16 no.10 s.115
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• pp.1014-1023
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• 2006

The purpose of this study is to propose the proper vocabularies for evaluating H.D TV set fan noise. To achieve this goal, psycho-acoustic experiments were carried out with TV set fan noise modulated at specific frequency band. Finally, a correlation analysis between vocabularies, and a factor analysis of psycho-acoustical responses were conducted. As a result of this study, followings are suggested. Analyzing the psycho-acoustical response corresponding to the various sound level, the higher the sound levels, the higher the response values were. It is estimated that the sound level determined psycho-acoustical responses. On the degree of response to fan noise, the initial level of negative feeling is located on $35{\sim}40$ dB(A). The factor of evaluating H.D. TV set fan noise has induced three the appropriate korean adjectives; Irritate, Monotonous, stuffy and dryness. The result of this study may be used to evaluate the acoustic threshold level for indoor noise or a basis for specifying the desired acoustic environment of dwellings.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2004.11a
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• pp.786-789
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• 2004

For the accurate evaluation of traffic noise with various spectrums and fluctuation characteristics, evaluation systems should reflect not only physical quantities but also the psychological respects of individual persons. In this study, adequate words for evaluating traffic noise have been extracted by reviewing the existing vocabularies and augmenting this with the results of a questionnaire prepared especially for apartment dwellers. As a result of this study, followings are suggested. 1) Vocabularies such as 'disagreeable', 'annoying', 'strident', 'disturbed', 'irritate', 'unpleasant', 'dislike' are classified into the first factor by factor analysis. 2) As a result of surveying overlapping vocabularies for each sound sources, 'noisy', 'annoying', strident', 'unpleasant', 'loudness' are main unpleasant vocabularies to franc noise occurring in our domestic apartment houses.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2009.10a
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• pp.712-713
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• 2009

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2009.04a
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• pp.184-185
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• 2009