• Title, Summary, Keyword: Urban Environmental Sound

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Evaluation of Sound Quality for Urban Environmental Sound (도시 환경음의 음질 평가)

  • Park, Hyeon-Ku;Shin, Yong-Gyu;Kim, Hang;Song, Min-Jeong;Kim, Sun-Woo
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • pp.529-534
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    • 2005
  • This study performed an physical analysis on the characteristics of urban environmental sound divided into three parts depending on their features. Object sounds were classified into traffic sound, waster sound and spatial sound. Traffice sound was selected because it is dominant sound in urban environment, and water sound is selected because it generally supplies pleasantness in contrast to traffic sound, Finally spatial sound was considered because it represents sound in various places of city having lots of behaviors and types of sound due to them. Physcal analysis was carried out using sound quality indices based on Zwicker's loudness, $L_{Aeq}$(equivalent noise level), Ln(percentile noise level) and other acoutical attributes applied to previous study. Through the analysis, this study aims to compare the acoustical characteristics of urban environmental sound and to provide fundamental data for the evaluation of urban environmental sound.

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An experimental study on the effect of soundscape with providing sound in urban parks (도심 공원의 소리연출에 의한 사운드스케이프 개선 효과에 관한 실험적 연구)

  • 김항;이태강;김선우
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • pp.1018-1021
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    • 2004
  • This study is an experimental study to introduce the soundscape design for urban parks. subjective response to soundscape for 4 urban park are carried out using 7 scale S.D. method which are included 25 adjective pairs. In order to recognized the effect environmental sound(bird singing, sweet environmental music, nature sound) for enriching the present sondscape, this study analyse the subject response for soundscape after and before using the environmental sound. The degree of satisfaction for visual atmosphere is higher than for auditory atmosphere of parks, this means that visual clues are much more effective to the environment condition than auditory clues. The effect of using the environmental sound is positive and effective to enrich the soundscape. On providing environmental sounds, it is necessary to consider the charcteristics of urban parks.

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Road Traffic Noise in Tunnel (터널 내부의 도로교통소음)

  • 여운호;유명진
    • Journal of Environmental Health Sciences
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    • v.19 no.4
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    • pp.9-13
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    • 1993
  • This paper describes the impact of reflected sound in tunnel. The impact of reflected sound is obtained from making a comparision between measurements of tunnel and bridge. Sound level of tunnel is higher than that of bridge because reflected sound is generated in tunnel. Road traffic noise cannot be freely propagated because there are many buildings in urban. Therefore, a tunnel effect is generated in urban road. The impact of reflected sound is generated not only in tunnel, but also in urban road. This study provides the basic data for tunneling work and noise control strategy in urban road.

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Subjective Assessment of Urban Environmental Sounds with Time Lapse (시간경과에 따른 도시 환경음의 주관평가)

  • Min, Byeong-Cheol;Kang, Sang-Woo;Jeon, Ji-Hyeon;Kook, Chan
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • pp.523-526
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    • 2007
  • Currently, there are various sounds in the urban surrounding environment such as natural, human, mechanical or sound, etc., and these urban environmental sounds remain in several memories according to magnitude, repetition, learning and experience of sounds. However, there are limitations in memorizing these environmental sounds, thus they are forgotten or reminded, or replaced with new ones from time to time. This study was attempted to look into the changes of the memory of noisiness annoyance and sharpness of the suggested sound sources with urban environmental sounds as time goes by and the order of memorization of the sound sources.

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Acoustic Amenity Factor of Urban Environmental Sound for the Ecological Soundscape (도시 환경음의 쾌적성 평가요인에 관한 연구)

  • Kook, Chan;Song, Min-Jeong;Shin, Hoon;Jang, Gil-Soo
    • Transactions of the Korean Society for Noise and Vibration Engineering
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    • v.16 no.4
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    • pp.428-436
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    • 2006
  • The assessment of an urban site depends on the way whether it responds to multiple needs such as functionality, aesthetic and complex comfort of acoustic, thermal, lighting and air quality etc. This study aims to investigate the assessment of various urban soundscapes in the sense of acoustic amenity by the questionnaires. As a result, acoustic amenity assessment was influenced by the non-acoustic factors such as environment assessment of visual, thermal, air quality etc. In the sense of sound quality, urban environmental sound was interpreted as 3 factors of strength, evolution of time, spacial localization. So these factors would be considered in the new assessment method for acoustic amenity. And it was shown that the subjects tend to perceive the noise level less than $3{\sim}5dB\;L_{eqA}$ according to the urban landscapes under the similar noise exposure level.

Feasibility of Alternative Physical Parameters by Subjective Evaluation for Urban Environmental Sounds (도시 환경음의 쾌적성 평가를 통한 새로운 지수 적용가능성 분석)

  • Park, Hyeon-Ku;Jang, Gil-Soo
    • KIEAE Journal
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    • v.8 no.1
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    • pp.31-36
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    • 2008
  • For the comfortable housing life, comfortable and pleasant urban environment should be created for the people living in house and in city. There are lots of environmental conditions in city affecting house and life. Also most of all the noise pollution have been become major factor that makes people's life uncomfortable. Recently soundscape researches have been performed to create comfortable urban environment and various studies on the evaluation of urban environmental sounds are now undergoing. This study aimed to analyse the subjective characteristics through the subjective evaluation to the sounds measured with physical parameters and eventually to find out alternative evaluation method for urban environmental sounds. Adjectives applied to previous studies were used for the subjective evaluation and sound sources recorded in specific places were presented with picture at the same time. As a result, new physical parameters such as Lmax, Unbiased Annoyance, G, N and EmT have a feasibility to evaluation of urban environment sounds in terms of acoustic comfort.

Evaluation of Subjective Responses for Urban Environmental Sounds to Create Comfortable Environment (쾌적환경 조성을 위한 도시 환경음의 주관반응 평가)

  • Park, Hyeon-Ku;Kim, Hang;Kook, Chan;Jang, Gil-Soo
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • pp.670-673
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    • 2005
  • For the comfortable housing life, an urban environment should give comfort and pleasantness to people living in house and in city. There are lots of environmental conditions in city affecting house and life and most of all the noise pollution have been become factor that makes people's life hard without need to say. Recently researches have been performed to create comfortable urban environment and a study on the evaluation of urban environmental sounds is now undergoing. This study aimed to analyse the subjective characteristics through the subjective evaluation to the sounds measured with physical parameters and eventually to find out evaluation method for urban environmental sounds. Vocabularies applied to previous studies were used for the subjective evaluation and sound sources recorded in specific places were presented with picture at the same time.

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Evaluation of Subjective Responses for Urban Environmental Sounds to Create Comfortable Environment -through the comparison of subjective evaluation- (쾌적환경 조성을 위한 도시 환경음의 주관반응 평가 II -주관반응평가 방법의 비교를 통하여-)

  • Park, Hyeon-Ku;Kim, Hang;Shin, Yong-Gyu;Gi, No-Gab;Kim, Sun-Woo;Jang, Gil-Soo
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • pp.734-737
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    • 2006
  • For the comfortable housing life, an urban environment should give comfort and pleasantness to people living in house and in city. There are lots of environmental conditions in city affecting house and life and most of all the noise pollution have been become factor that makes people's life hard without need to say. Recently researches have been performed to create comfortable urban environment and a study on the evaluation of urban environmental sounds is now undergoing. This study aimed to analyse the subjective characteristics through the subjective evaluation to the sounds measured with physical parameters and eventually to find out evaluation method for urban environmental sounds. Vocabularies applied to previous studies were used for the subjective evaluation and sound sources recorded in specific places were presented with picture at the same time.

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A Study on the Development of Urban Environmental Evaluation Indicator and Its Application for the Fifth and Sixth Graders based on the Eco-City Concept (생태 도시 개념을 적용한 도시 평가 지표 개발 및 활용 방안 연구 - 초등학교 5, 6학년을 중심으로 -)

  • Jang, Ho-Chang;Nam, Young-Sook
    • Hwankyungkyoyuk
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    • v.20 no.2
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    • pp.78-92
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    • 2007
  • The purindicator and its application through the application of the eco-city concept. To achieve this aim, this study execute to erect eco-city concept, to develop urban evaluation indicator for the fifth and sixth graders of elementary school, to survey for elementary school teacher in Daegu and to develop application of urban evaluation indicator for the fifth and sixth graders of elementary school. The result of study can be summarized as follow. First, erecting the eco-city concept and urban evaluation indicator for the fifth and sixth graders of elementary school was developed with 14 objects, such like that saving and sound circulation of water resource, sound atmosphere. Second, The result of survey, generally, teachers evaluated that Daegu has problems. The degree of interest of urban environmental problem of Daegu showed that each problem had relatively equal distribution. Teachers had positive response that the ecocity concept applied to environmental education of elementary school. Selection of educational contents had distinct tendency with application of the concept of ecocity. Teachers indicated several problems in environmental education of elementary school. Third, We develop application of indicator for the fifth and sixth graders of elementary school. We concluded that developing application of indicator will offer as follows: First, student and teacher can logically understand urban environmental problems. Second, application of indicator had role of useful tool for environmental education of elementary school.

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Acoustic Amenity Assessment of Urban Environmental Sound for the Ecological Soundscape (친환경 사운드스케이프 조성을 위한 도시 환경음의 쾌적성 평가)

  • Jang, Gil-Soo;Kook, Chan;Shin, Hoon;Ki, No-Gap
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • pp.678-681
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    • 2005
  • The assessment of an urban site depends on the way it responds to multiple needs such as functionality, aesthetic and complex comfort of acoustic, thermal, lighting and air quality This study aims to investigate the assessment of various urban soundscapes in the sense of acoustic amenity by the questionnaires. As a result, acoustic amenity assessment was influenced by the non-acoustic factors such as environment assessment of visual, thermal, air quality etc.. And it was shown that the subjects tend to perceive the noise level less than 3$\sim$10dB L$_{Aeq}$ under the similar noise exposure level according to the urban landscapes.

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