• 한국소음진동공학회논문집
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• 제23권1호
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• pp.3-8
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• 2013

Recently, the impact on hearing induced by using of portable audio equipment have been actively studied. In general, Because they turn the volume up with loud background noise, they may expose to louder noise. In this study, we investigated the maximum noise level of 20 the domestic potable audio equipment and estimated the impact of the hearing induced by portable audio equipment in according to exposure time. As a result, the use of portable audio equipment is assumed to be more three hours when the level of more than 50 % of volume is most likely to affect the hearing.

• 한국소음진동공학회논문집
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• 제22권2호
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• pp.130-138
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• 2012

Environmental noise in the residential area is appeared with different types and features along with the growth of society. In particular when the economic level is raised up, the demand of residents for the environmental noise becomes more sensitive. The existing research on the environmental noise was initiated in the 1980's and resulted that the children's jumping sound was most annoying among the noises transmitted from the other unit. This result caused such activities that the researches were focused on the floor impact noise and that the laws in relation to environmental noise within residential area were revised strictly. This study aimed to survey the consciousness of residents for the environmental noise and to see how it is changed comparing with the previous one. Ultimately this result could be useful to establish the target for research or noise control to make the comfortable residential environment.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2001년도 춘계학술대회논문집
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• pp.1034-1039
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• 2001

Recently. development of a subway as a public transport has been increased rapidly. Therefore, large noise, which induced from vehicle itself as well as frictions between rails and train, may inflict a considerable damage to the adjacent structure and cause discomfort to neighboring residents. Nevertheless, adequate design guidelines to reduce outdoor noise are not yet established. The present work carried out a survey on the influence of outdoor subway noise using questionnaires. Also or noise measurements levels in those are as were performed.

• 한국음향학회지
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• 제4권1호
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• pp.3-8
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• 1985

Environmental noise raises serious problems in our ciries. Noise reduces the preformance task, and occasionially causes the physiological problems such as nervous strain, headache etc. This study is to investigate the environmental noise of elementary school classrooms in attempt to probide the basis of appropriate sound performance standards. Field interview survey with a total of 369 subjects in 3 elementary schools and simultaneously measurements of noise level have been made. The results of study show that the A-weighted noise level is in excess of the criteria recommended by I.S.O. and 69% of the subjects are annoyed by the environmental noises : in particular traffic ; and market noises.

• 한국마린엔지니어링학회:학술대회논문집
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• 한국마린엔지니어링학회 2011년도 전기공동학술대회 논문집
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• pp.235-235
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• 2011

태평양 해양 지각판과 인도-호주 대륙 지각판간 섭입작용에 의해 형성된 남태평양 라우분지는 활동성 후열도분지로서 해저열수광상이 부존할 가능성이 매우 높은 지역이다. 한국해양연구원은 지난 2004년부터 2006년까지 북동 라우분지의 확장대와 활동성 해저산을 대상으로 열수활동을 추적하여 열수분출 지역을 확인하였다. 본 연구에서는 2009년 통가 해역 라우분지의 열수 광상 가능성이 있는 해산들에 대하여 해양탄성파탐사가 수행되었다. 그 중 해상자력탐사와 탄성파탐사를 동시에 수행한 TA 12 해산에 대해 기반암과 상부 층서들을 규명하기 위한 자료처리를 실시하고 해산에서 나타나는 잡음특성을 분석하였다. 자료처리의 주요과정은 bandpass필터, f-K필터, 디콘볼루션 등을 수행하여 주변 지형의 후방산란과 다중반사파 등의 잡음을 제거하였으며 해산의 경사에 의해 따른 반사점 보정을 위해 마이그레이션등을 수행하였다. 본 연구에서 기반암과 상부 층서들을 확인할 수 있었으며 향후 다중음향측심자료 등을 이용하여 열수광상 가능성이 있는 해산의 정확한 속도모델을 도출하여 해상자력탐사결과와 비교해야 할 것으로 판단된다.

• 대한설비공학회:학술대회논문집
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• 대한설비공학회 2006년도 하계학술발표대회 논문집
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• pp.1087-1092
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• 2006

Recently, traffic noise level is rapidly increasing, and it is crowed caused by recently overcrowded and overgrown cities, and increasing traffic volume is emerging as a major factor of disrupting the living and working environment. In this situation, citizens are increasingly complaining about the traffic noise. The noise level of in major cities in Korea is serious and affects on citizens physically and psychologically. Many people live in residential areas around crowed roads in major cities, such as Seoul. Accordingly, the purpose of this study is to predict outside noise distribution of building through survey and simulation to make better sound insulation performance research. The result of this study shows that the traffic noise is influenced from ground 50m and analyzed that form of building and arrangement type must be considered to the level of noise decrease.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2006년도 추계학술대회논문집
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• pp.262-265
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• 2006

In order to investigate characteristics of floor impact sound generated in the apartment buildings, questionnaire survey was conducted for respondents living in apartments in 200t. Questions in the surrey were on the characteristics of real impact sounds, subjective annoyance and satisfaction on the heavy and light impact sources. From the survey results, it was found that most annoying time of a day and the space were 8 p.m. to midnight at living room. It was also revealed that the main source of the floor impact sound from the upper floor is a child's jumping and running at from six to nine. More than half of people were not satisfied on the floor impact isolation performance of their own apartments. The percentage of residents who were annoyed by the heavy-weight impact sound such as children's jumping and adult's walking was $5{\sim}10%$ lower than by light-weight impact sound. In addition, females being responded more annoyed by floor impact sound than males.

• 한국음향학회지
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• 제15권4호
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• pp.12-17
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• 1996

최근 각종 교통소음 공해의 심각성과 주민들의 생활의 질에 대한 요구는 나날이 높아 가는 추세이다. 따라서 소음영향평가 및 소음조절 방안수립에 대한 연구의 필요성이 절실히 요구된다. 본 연구에서는 문헌고찰 및 실측을 통하여 선진 외국의 고속열차에 대한 소음의 물리적 특성을 규명한 후, 국내에서 최초로 건설되는 고속철도 전용역사인 C 종합역사를 대상으로 외부환경 소음도를 평가하였다. 이는 향후 국내 고속철도 개통에 따른 소음영향의 제반 문제점 및 개선방향과 역사 건물 실내외의 소음방지 대책을 수립하는데 주요 기초 자료로 활용될 수 있을 것으로 판단된다.

• KIEAE Journal
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• 제9권1호
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• pp.99-106
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• 2009

This study aims to survey the acoustical environment in the region around airport where there are various transportation noises such as aircraft noise, railway noise and traffic noise, and to analyze the subjective response on the noise to the people who live in house or work in office nearby airport. Measurement and subjective response evaluation were carried out at the same time and outdoor noise level was measured all day long to calculate one day results such as average Leq or one day WECPNL etc. The results showed that the military aircraft produces very high level comparing with commercial aircraft, for instance the sound level of commercial outdoor was lower than that of military aircraft indoor. Double and triple window were more effective for controlling the noise than single window, which showed the possibility of sound insulation treatment by installing windows having higher sound insulation performance. Finally the subjective response was resulted that the most annoying noise is from aircraft and counterplan they hope is 'airport moving out'. Leq 65 dB(A), the criteria value of sound insulation treatment, was corresponding to the subjective response of median annoyance '4' out of 7th scale.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2023년도 봄 학술논문 발표대회
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• pp.249-250
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• 2023

The objective of this study is to evaluate the airborne sound insulation performance between housing units and community facilities during the construction phase. Community facilities adjacent to housing units can lead to noise problems, hence it is necessary to minimize noise transmission during the design phase. However, flanking noise transmitted through gaps of structures, windows, pipes, and other openings may result in substandard sound insulation performance falling below the design standards. Therefore, It is crucial to measure airborne sound insulation in the field during the construction phase. The measurement was conducted using the survey method for the field measurement of the airborne sound insulation in accordance with KS F ISO 10052:2021. Although the noise standards caused by community facilities in apartment complexes are not specified in current laws and regulations, desired noise level was set based on international guidelines for indoor noise. First, the level of noise generated in community facilities was estimated, and then the sound insulation performance was evaluated to determine whether the desired noise level was achieved.