• 환경정책연구
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• 제14권1호
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• pp.113-134
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• 2015

2013년 전체 신규 주택 수요 중에서 아파트 등의 공동주택이 차지하는 비중이 89.9%이다. 이와 같이 공동주택의 다수의 세대가 함께 거주함으로써 이웃 간 층간소음에 관한 분쟁은 지속적으로 증가하고 있다. 한국에서의 층간소음 문제는 세계적으로 상당히 심각한 수준으로 국민의 약 88%가 층간소음 스트레스를 받고 있다. 한편, 정부는 층간소음 분쟁 완화를 위해 바닥두께 및 바닥충격음 저감성능 등과 같은 규제강화와 공동주택 단지별로 자체적인 해결을 유도하고 있다. 하지만 이와 같은 물리적 규제와 소극적인 관리정책으로는 층간소음 분쟁완화에 한계가 있다. 또한, 실내 정온한 생활환경을 위한 삶의 질을 향상시키기 위해서는 층간소음에 대한 건강영향이 고려된 정책마련이 필요하다. 따라서 소음노출에 따른 인체반응 연구사례를 조사하여 소음이 건강에 미치는 영향을 분석하였다. 이를 바탕으로 층간소음 노출기간에 따른 건강영향을 고찰하였다.

• 한국소음진동공학회논문집
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• 제22권9호
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• pp.825-829
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• 2012

The global warming caused the changes of our environment like an increasing tropical night phenomenon in the middle latitude areas. Especially, in Korea, the habitats of tropical Korean blockish cicada have changed from Jeju island located in Southern part of Korea to the whole of Korea because of the increasingly warming weather. The cicadas crying sound have been social problem because the tropical Korean blockish cicadas cry at middle of the night owing to the various outdoor lights. The cicada is positive phototaxis insect. So, the cicada is not cry at night. But if the outdoor light is very bright, then the cicada confuse the night as a day and start to cry. As a result, the cicadas crying noise has caused the resident living in downtown to an unpleasure and sleeplessness. In this research, we have measured three kinds of cicada singing noise at 16 points of urban area(Incheon, Gwangju, Busan, Gyeonggido Anyang). And then we analyzed the sound quality of the three kinds of cicada singing noise using by CADA-X signal process program. And we analyzed the acoustical characteristics by STFT(short time Fourier transform) which is a time-frequency analysis method. The characteristics of the cicada singing noise in terms of the sound quality and the time-frequency variation will be usefull to discover the relations between the human annoyance about the cicada singing noise and the acoustical characteristics.

• 한국소음진동공학회논문집
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• 제15권4호
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• pp.465-473
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• 2005

The impact sounds, generated by the walking of people, the dropping of an object or the moving of furniture, can be a source of great annoyance in residential buildings. The characteristics and level of this impact noise depends on the object striking the floor, on the basic structure of the floor, and on the finish materials of floor. The focus of this paper is to investigate the amount of improvement impact sound pressure level according to the change of the composition method of ceiling and wall. For this purpose, we tested impact sound pressure level of several cases which is the inserting of mineral wool, the increase of the thickness of air layer, the using of anti-vibration rubber in ceiling and attach the mineral wool on wall in the Floor Impact Sound Test Building of KICT. The results show that the composition method of ceiling and wall is more effective in the reduction of light weight impact sound specially in 125Hz and 250Hz.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2004년도 추계학술대회논문집
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• pp.261-264
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• 2004

Impact sounds, such as those created by footsteps, the dropping of an object or the moving of furniture, can be a source of great annoyance in residential buildings. The character and level of impact noise generated depends on the object striking the floor, on the basic structure of the floor, and on the floor covering. This study base on the evaluate of isolation performance of impact sound according to the installation of ceiling and wall. In this test, we measured the reduction of impact sound in the case of inserting absorption materials, increasing of the thickness of air layer and using anti-vibration rubber in ceiling, install of absorption materials in wall. The results of this study show that treatment of ceiling and wall have some reduction of the light weight impact sound and heavy weight impact sound.

• 대한환경공학회지
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• 제34권12호
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• pp.847-854
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• 2012

최근 국내 거주지역의 다변화와 고속도로와의 근접성을 고려한 선호되는 위치의 변화로 인해 방음벽에 대한 수요 및 설치에 대한 필요성이 그 어느 때보다 증대되고 있다. 하지만, 방음벽의 설치에도 불구하고, 도로로부터 발생되는 소음에 대한 민원은 지속되고 있는 실정이다. 또한, 이미 설치된 방음벽에서도 황변, 먼지침착, 충격파괴 등의 유지, 보수에 대한 어려움이 제기되고 있다. 이로 인해 위에서 제시된 문제점을 해결하기 위한 방법으로 새로운 소재를 이용 또는 새로운 개념의 방음벽에 대한 연구필요성이 제시되고 있다. 본 연구는 새로운 소재의 개발, 부가기능의 첨가, 또는 설계의 다변화를 통해 기존의 방음벽이 안고 있는 기술적, 경제적 문제점을 해결하기 위한 새로운 방음벽 개발의 첫 단계로 기존의 국내외 방음벽과 관련된 기 수행된 연구동향을 분석하고 이에 따라 향후 개발방향에 대해서 모색하였다.

• 한국소음진동공학회논문집
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• 제18권6호
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• pp.624-631
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• 2008

This study evaluates the impact of aircraft noise on people's health using the Todai health index(THI). A questionnaire survey was conducted in the vicinity of Gimpo International Airport in Seoul, South Korea, from August 8th to September 9th, 2005. The survey area was divided into three groups based on different aircraft noise levels : area (1) for $80{\sim}85$ WECPNL, area (2) for $75{\sim}80$ WECPNL and area (3) for less than 75 WECPNL. In each area, approximately 200 respondents were sampled. Twelve scale scores of THI are converted to dichotomous variables based on scale scores of 90 percentile value or 10 percentile value in the control group. Logistic regression analysis taking twelve scores converted as the dependent variables and WECPNL(area), age, gender as the independent variables is conducted. Significant dose-response relationships are found in the scale of MOUT, DEPR, NERV, LIFE. Factor analysis was carried out and 2 factors are extracted. Those two factors might be called the "somatic factor" and the "mental factor". The dose-response relationship between two factors and noise seems to be unclear. Unexpectedly the odds ratio of the menatl factor in area (2), where the noise exposure level is lower than that of the area (1), is the highest and the annoyance in this area is also higher than area (1).

• 한국소음진동공학회논문집
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• 제25권4호
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• pp.299-305
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• 2015

A statistical annoyance model to railway noise at platform was proposed by jury evaluation test performed in hearing laboratory. ITX-Saemaeul and Mugunghwa were chosen as the noise sources of the test, and announcement sound was included to simulate real situation. Logistic regression analysis produced %HA_LAB curve. Hosmer-Lemeshow test and classification accuracy test were used to verify the model's statistical significance. It was shown that the model which was generated from relatively small number of samples is statistically significant.

• 한국소음진동공학회논문집
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• 제24권9호
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• pp.731-740
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• 2014

Occupants induced floor vertical vibrations may cause other occupant's annoyance and lead to social loss. To help control such floor vibrations, several criteria have been developed mostly based on human perception tests and floor vibration tests. Floor vibration is evaluated by comparison with criteria and vibration parameters of subject floor, such as frequency, damping ratio, acceleration value, vibration duration time and occurrence frequency. Three acceleration value parameters are used in criteria; peak acceleration, rms acceleration and VDV, when a floor vibration serviceability is evaluated. Meanwhile rms acceleration and peak acceleration are adopted as vibration limit value in criteria and researches of human perception for vibration. Occupants induced floor vibration is transient rather than steady state. However, rms acceleration is not reliable parameter for evaluating transient vibration. The objective of this study is to investigate the characters of human perception level according to acceleration value parameters for vibration induced by heel impacts and walking activities.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2005년도 추계학술대회논문집
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• pp.800-803
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• 2005

Impact sounds, such as those created by footsteps, the dropping of an object or the moving of furniture, can be a source of great annoyance in residential buildings. Running and jumping impact sound by child and walking by adult are one of the most irritating noises in an apartment buildings. It's necessary to know that the impact power characteristics of real impact source in an apartment buildings. This study aims to investigate the impact power and impact time of normal walking and fast walking for 62 adults. It is shown that when the weight of the person increase, the maximum impact power increases. The impact power waveform for the adults walking varies for subjects walking types. The normal walking impact power lower than that of fast walking and impact time is higher than that of fast walking. The range of the impact power generated by adults walking is less than 1000 N.

• 대한예방의학회:학술대회논문집
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• 대한예방의학회 2005년도 제57차 추계 학술대회 연제집
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• pp.411-411
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• 2005