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Since the development of the 5-point verbal and 11-point numerical scales for measuring noise annoyance by the ICBEN Team 6, these scales have been widely used in socio-acoustic surveys worldwide, and annoyance responses have been easily compared internationally. However, both the top two categories of the 5-point verbal scale and the top three ones of the 11-point numerical scale are correspond to high annoyance, so it is difficult to precisely compare annoyance responses. Therefore, we calculated differences in day–evening–night-weighted sound pressure levels (Lden) by comparing values corresponding to 10% highly annoyed (HA) on Lden_%HA curves obtained from measurements in 40 datasets regarding surveys conducted in Japan and Vietnam. The results showed that the Lden value corresponding to 10% HA using the 5-point verbal scale was approximately 5 dB lower than that of the 11-point numerical scale. Thus, some correction is required to compare annoyance responses measured by the 5-point verbal and the 11-point numerical scales. The results of this study were also compared with those of a survey in Switzerland.
Makoto Morinaga; Thu Nguyen; Shigenori Yokoshima; Koji Shimoyama; Takashi Morihara; Takashi Yano. The Effect of an Alternative Definition of “Percent Highly Annoyed” on the Exposure–Response Relationship: Comparison of Noise Annoyance Responses Measured by ICBEN 5-Point Verbal and 11-Point Numerical Scales. International Journal of Environmental Research and Public Health 2021, 18, 6258 .
AMA StyleMakoto Morinaga, Thu Nguyen, Shigenori Yokoshima, Koji Shimoyama, Takashi Morihara, Takashi Yano. The Effect of an Alternative Definition of “Percent Highly Annoyed” on the Exposure–Response Relationship: Comparison of Noise Annoyance Responses Measured by ICBEN 5-Point Verbal and 11-Point Numerical Scales. International Journal of Environmental Research and Public Health. 2021; 18 (12):6258.
Chicago/Turabian StyleMakoto Morinaga; Thu Nguyen; Shigenori Yokoshima; Koji Shimoyama; Takashi Morihara; Takashi Yano. 2021. "The Effect of an Alternative Definition of “Percent Highly Annoyed” on the Exposure–Response Relationship: Comparison of Noise Annoyance Responses Measured by ICBEN 5-Point Verbal and 11-Point Numerical Scales." International Journal of Environmental Research and Public Health 18, no. 12: 6258.
Expanding transport systems for life convenience and preserving the natural environment are essential but conflicting human activities. The operational expansion after the opening of a new terminal building at Hanoi Noi Bai International Airport was followed by changes in aircraft noise exposure. A series of socio-acoustic surveys were conducted around the airport, revealing different levels of noise annoyance responses in the surveyed sites. To clarify this discrepancy and to explore people’s true feelings, the Picture-Frustration test was conducted to assess attitudes toward the airport, aircraft noise, living environment, and awareness of environmental protection in the communities around the airport. A total of 321 responses were obtained. The results showed a significant variation in attitudes toward the airport and natural environment among residents in different areas. Urban residents preferred natural environment more than those living in rural and mixed sites, who desired harmony between nature and life convenience. Residents in rural sites raised more complaints about aircraft noise effects on sleep than those in the other sites. Factors of occupations and gardening activities did not affect residents’ attitudes toward the airport. The attitudes of the participants varied depending on the exposure noise levels. It was suggested that using multiple questioning methods is necessary to certify the true opinions and aspirations of people living in the project area and ensure sustainable development.
ThuLan Nguyen; Sonoko Kuwano; Ichiro Yamada; Takashi Yano; Makoto Morinaga. Picture-Frustration Test to Assess Environmental Attitudes of Residents Exposed to Aircraft Noise from Hanoi Noi Bai International Airport. Sustainability 2021, 13, 2016 .
AMA StyleThuLan Nguyen, Sonoko Kuwano, Ichiro Yamada, Takashi Yano, Makoto Morinaga. Picture-Frustration Test to Assess Environmental Attitudes of Residents Exposed to Aircraft Noise from Hanoi Noi Bai International Airport. Sustainability. 2021; 13 (4):2016.
Chicago/Turabian StyleThuLan Nguyen; Sonoko Kuwano; Ichiro Yamada; Takashi Yano; Makoto Morinaga. 2021. "Picture-Frustration Test to Assess Environmental Attitudes of Residents Exposed to Aircraft Noise from Hanoi Noi Bai International Airport." Sustainability 13, no. 4: 2016.
Many decibel-based noise indicators are used in noise policy to evaluate aircraft sound in the environment. Among those, day–evening–night-weighted sound pressure level ( L den ), day–night-weighted sound pressure level ( L dn ), and nighttime average sound pressure level ( L night ) are the most widely used. However, the designation of reference time intervals (e.g., day, evening, and night) differs depending on the country’s lifestyle and culture. A dataset—extracted from socio-acoustic surveys conducted in Vietnam (2005–2019)—was analyzed to investigate temporal patterns of the Vietnamese lifestyle and changes in L den , L dn , and L night when temporal interval segmentations in these indicators were adjusted. Traffic congestion hours, go-to-bed time, and wake-up time in southern Vietnam were approximately one hour later than those in northern and central Vietnam. Further, a small-scale and Internet-based questionnaire survey on Vietnamese life rhythms was conducted to examine Vietnamese people’s daily behaviors. These data were compared with the relevant data of Japanese individuals, extracted from the Survey on Time Use and Leisure Activities of Japan. Differences in sleeping times and mealtimes were found between Japanese and Vietnamese data. We suggest an appropriate reference time interval for aircraft noise policy in Vietnam, referring to the current national and international noise standards and regulations.
Thu Lan Nguyen; Ichiro Yamada; Takashi Yano; Koichi Makino; Masaharu Ohya. Validity of Reference Time Intervals in Noise Indicators for Aircraft Noise Policy in Vietnam. Urban Science 2020, 4, 19 .
AMA StyleThu Lan Nguyen, Ichiro Yamada, Takashi Yano, Koichi Makino, Masaharu Ohya. Validity of Reference Time Intervals in Noise Indicators for Aircraft Noise Policy in Vietnam. Urban Science. 2020; 4 (2):19.
Chicago/Turabian StyleThu Lan Nguyen; Ichiro Yamada; Takashi Yano; Koichi Makino; Masaharu Ohya. 2020. "Validity of Reference Time Intervals in Noise Indicators for Aircraft Noise Policy in Vietnam." Urban Science 4, no. 2: 19.
Herein, the effects of changes in acoustic and non-acoustic factors on public health and reactions were assessed using two follow-up investigations; this was achieved after three surveys were conducted on the impact of the step change in noise caused by the increased number of flights at the Noi Bai International Airport in Hanoi (Vietnam) after the new terminal building was opened to the public. Exposure-response relationships established in the follow-up studies were less in number than those established in 2015 after the step change had occurred, and were almost similar to the relationship established in the survey conducted before the step change; however, these relationships were significantly greater than those established in the European Union position paper. Comparisons between respondents with high blood pressure and insomnia ratios at different noise level ranges showed that there is no significant association between ratios of high blood pressure and day-evening-night noise levels; however, an exposure-response relationship was discovered between insomnia and night-time noise levels. Non-acoustic factors such as noise sensitivity, sound insulation capacity of houses, and length of residence were found to curb the respondents’ annoyance, insomnia, and high blood pressure. Thus, an improvement in residence quality and a restriction on nighttime flight operation is necessitated.
Thu Lan Nguyen; Bach Lien Trieu; Yasuhiro Hiraguri; Makoto Morinaga; Takashi Morihara; Takashi Yano. Effects of Changes in Acoustic and Non-Acoustic Factors on Public Health and Reactions: Follow-Up Surveys in the Vicinity of the Hanoi Noi Bai International Airport. International Journal of Environmental Research and Public Health 2020, 17, 2597 .
AMA StyleThu Lan Nguyen, Bach Lien Trieu, Yasuhiro Hiraguri, Makoto Morinaga, Takashi Morihara, Takashi Yano. Effects of Changes in Acoustic and Non-Acoustic Factors on Public Health and Reactions: Follow-Up Surveys in the Vicinity of the Hanoi Noi Bai International Airport. International Journal of Environmental Research and Public Health. 2020; 17 (7):2597.
Chicago/Turabian StyleThu Lan Nguyen; Bach Lien Trieu; Yasuhiro Hiraguri; Makoto Morinaga; Takashi Morihara; Takashi Yano. 2020. "Effects of Changes in Acoustic and Non-Acoustic Factors on Public Health and Reactions: Follow-Up Surveys in the Vicinity of the Hanoi Noi Bai International Airport." International Journal of Environmental Research and Public Health 17, no. 7: 2597.
This study investigated the effects of railway elevation, operation of a new station, and earthquakes on railway noise annoyance in two areas along a conventional railway line (CRL) adjacent to the Kyushu Shinkansen line: the north area with the CRL elevation and the south area with the operation of the new station, both of which occurred in March 2016. In April 2016, Kumamoto region was struck by a series of large earthquakes, prompting their inclusion in this study, as frequent aftershocks with loud ground rumbling might make people more sensitive to railway noise and vibration. Socioacoustic surveys were performed in both areas before and after the earthquakes. Because very few respondents in the north area reported that they were “highly annoyed,” further analysis was conducted on data from the south area. The exposure–annoyance relationship was found to be significantly higher in 2017 than in 2011 despite lower noise exposure. Multiple logistic regression analysis showed that Lden, noise sensitivity, and serious damage by the earthquakes in addition to the operation of the new station significantly affected the annoyance in both detached and apartment houses. However, when the earthquakes caused minimal damage, they did not significantly affect annoyance.
Yasuhiro Murakami; Takashi Yano; Makoto Morinaga; Shigenori Yokoshima. Effects of Railway Elevation, Operation of a New Station, and Earthquakes on Railway Noise Annoyance in Kumamoto, Japan. International Journal of Environmental Research and Public Health 2018, 15, 1417 .
AMA StyleYasuhiro Murakami, Takashi Yano, Makoto Morinaga, Shigenori Yokoshima. Effects of Railway Elevation, Operation of a New Station, and Earthquakes on Railway Noise Annoyance in Kumamoto, Japan. International Journal of Environmental Research and Public Health. 2018; 15 (7):1417.
Chicago/Turabian StyleYasuhiro Murakami; Takashi Yano; Makoto Morinaga; Shigenori Yokoshima. 2018. "Effects of Railway Elevation, Operation of a New Station, and Earthquakes on Railway Noise Annoyance in Kumamoto, Japan." International Journal of Environmental Research and Public Health 15, no. 7: 1417.
The Shinkansen super-express railway system in Japan has greatly increased its capacity and has expanded nationwide. However, many inhabitants in areas along the railways have been disturbed by noise and ground vibration from the trains. Additionally, the Shinkansen railway emits a higher level of ground vibration than conventional railways at the same noise level. These findings imply that building vibrations affect living environments as significantly as the associated noise. Therefore, it is imperative to quantify the effects of noise and vibration exposures on each annoyance under simultaneous exposure. We performed a secondary analysis using individual datasets of exposure and community response associated with Shinkansen railway noise and vibration. The data consisted of six socio-acoustic surveys, which were conducted separately over the last 20 years in Japan. Applying a logistic regression analysis to the datasets, we confirmed the combined effects of vibration/noise exposure on noise/vibration annoyance. Moreover, we proposed a representative relationship between noise and vibration exposures, and the prevalence of each annoyance associated with the Shinkansen railway.
Shigenori Yokoshima; Takashi Morihara; Tetsumi Sato; Takashi Yano. Combined Effects of High-Speed Railway Noise and Ground Vibrations on Annoyance. International Journal of Environmental Research and Public Health 2017, 14, 845 .
AMA StyleShigenori Yokoshima, Takashi Morihara, Tetsumi Sato, Takashi Yano. Combined Effects of High-Speed Railway Noise and Ground Vibrations on Annoyance. International Journal of Environmental Research and Public Health. 2017; 14 (8):845.
Chicago/Turabian StyleShigenori Yokoshima; Takashi Morihara; Tetsumi Sato; Takashi Yano. 2017. "Combined Effects of High-Speed Railway Noise and Ground Vibrations on Annoyance." International Journal of Environmental Research and Public Health 14, no. 8: 845.
The development of the Shinkansen railway network in Japan has continued since 1964; however, associated noise and vibration have seriously affected communities located beside the lines. The Kyushu Shinkansen Line (KSL) was opened in 2011 and a second temporary conventional railway line (STL) was operated in 2012. The purpose of this study was to compare community responses to railway noise and vibration before and after the opening of these two lines. Socio-acoustic surveys were performed in Kumamoto from 2009 to 2012, where the conventional and Shinkansen lines are adjacent. The noise and vibration exposures were increased slightly after the opening of the KSL but decreased slightly after the opening of the STL. When multiple logistic regression analysis was applied using highly annoyed/annoyed as the dependent variable and using day–evening–night sound level (Lden) and a dummy variable of before or after the opening of the KSL as independent variables, high annoyance was not changed significantly but moderate annoyance decreased significantly following the opening. There was no significant difference in either high or moderate annoyance between the periods before and after the opening of the STL.
Hiroyuki Tetsuya; Takashi Yano; Yasuhiro Murakami. Annoyance due to railway noise before and after the opening of the Kyushu Shinkansen Line. Applied Acoustics 2016, 115, 173 -180.
AMA StyleHiroyuki Tetsuya, Takashi Yano, Yasuhiro Murakami. Annoyance due to railway noise before and after the opening of the Kyushu Shinkansen Line. Applied Acoustics. 2016; 115 ():173-180.
Chicago/Turabian StyleHiroyuki Tetsuya; Takashi Yano; Yasuhiro Murakami. 2016. "Annoyance due to railway noise before and after the opening of the Kyushu Shinkansen Line." Applied Acoustics 115, no. : 173-180.
It is necessary to assess differences in the community response to noise among countries for the effective implementation of noise policies. However, very little noise annoyance data have been accumulated in countries outside Europe and North America. Toward the establishment of a noise policy in Vietnam and to meet global interest in noise problems in Asia, socio-acoustic surveys on the community response to transportation noise have been carried out in Vietnam since 2005. A total of around 9,900 responses were obtained from these surveys. In this paper, a method of drawing exposure-response curves for noise annoyance in Vietnam is presented. Representative exposure-response relationships are proposed for road traffic and aircraft noise annoyance in Vietnam and compared with those of Europe and Korea. The results show that the aircraft noise annoyance curve for Vietnam was slightly higher than the curve obtained by the EU but considerably lower than that for Korea. Vietnamese respondents were less annoyed by road traffic noise than respondents in Europe and Korea. The frequency of use and the attitude to the benefits to society of motorbikes and airplanes were found to moderate noise annoyance in Vietnamese cities. This study also shows a method to quantify the difference in the prevalence of annoyance measured by five-point verbal and 11-point numerical scales.
Thu Lan Nguyen; Takashi Yano; Tsuyoshi Nishimura; Tetsumi Sato; Nguyen Thu Lan; Yano Takashi; Nishimura Tsuyoshi; Sato Tetsumi. Exposure-response relationships for road traffic and aircraft noise in Vietnam. Noise Control Engineering Journal 2016, 64, 243 -258.
AMA StyleThu Lan Nguyen, Takashi Yano, Tsuyoshi Nishimura, Tetsumi Sato, Nguyen Thu Lan, Yano Takashi, Nishimura Tsuyoshi, Sato Tetsumi. Exposure-response relationships for road traffic and aircraft noise in Vietnam. Noise Control Engineering Journal. 2016; 64 (2):243-258.
Chicago/Turabian StyleThu Lan Nguyen; Takashi Yano; Tsuyoshi Nishimura; Tetsumi Sato; Nguyen Thu Lan; Yano Takashi; Nishimura Tsuyoshi; Sato Tetsumi. 2016. "Exposure-response relationships for road traffic and aircraft noise in Vietnam." Noise Control Engineering Journal 64, no. 2: 243-258.
Seven models were compared in terms of the ability to predict the annoyance due to the combination of aircraft and road traffic noises on the basis of data collected around airports in Ho Chi Minh City and Hanoi, Vietnam. The 24-h average sound levels LAeq,24h and unweighted means of annoyance scores for aircraft, road traffic, and combined noise were used to solve the regression equations for the seven models. The results indicate that road traffic noise exposure and annoyance were more than those of aircraft noise at almost all sites in both Ho Chi Minh City and Hanoi. Among the considered models, the dominant source model yielded the highest coefficients of determination, with R2 values of 0.82 and 0.90 for surveys in Ho Chi Minh City and Hanoi, respectively. These results suggest that the dominant source model is the most useful model in the vicinity of those airports in Vietnam where road traffic noise is more dominant than aircraft noise. This is convenient for situations in which dose-response curves are established separately for different noise sources.
T.L. Nguyen; H.Q. Nguyen; T. Yano; T. Nishimura; T. Sato; T. Morihara; Y. Hashimoto. Comparison of models to predict annoyance from combined noise in Ho Chi Minh City and Hanoi. Applied Acoustics 2012, 73, 952 -959.
AMA StyleT.L. Nguyen, H.Q. Nguyen, T. Yano, T. Nishimura, T. Sato, T. Morihara, Y. Hashimoto. Comparison of models to predict annoyance from combined noise in Ho Chi Minh City and Hanoi. Applied Acoustics. 2012; 73 (9):952-959.
Chicago/Turabian StyleT.L. Nguyen; H.Q. Nguyen; T. Yano; T. Nishimura; T. Sato; T. Morihara; Y. Hashimoto. 2012. "Comparison of models to predict annoyance from combined noise in Ho Chi Minh City and Hanoi." Applied Acoustics 73, no. 9: 952-959.
Activities from 2008 to 2011 by ICBEN community response to noise team were summarized. That is, individual community-based indexes such as community tolerance Level, Zuricher Fluglarm Index (ZFI) and Frankfurter Fluglarm Index (FFI/FNI) were newly proposed, differences in railway bonus between Europe and Asia were discussed by a Swedish survey, socio-acoustic surveys were reported from developing countries, and annoyance equivalents and dominant source models were proposed as the adequate combined noise model. Furthermore, not only negative, but also positive aspects of sound were discussed as soundscape studies. Finally, seven items were listed as future team activities.
Takashi Yano; Soogab Lee; Truls Gjestland. Community response to noise. Noise and Health 2012, 14, 303 -6.
AMA StyleTakashi Yano, Soogab Lee, Truls Gjestland. Community response to noise. Noise and Health. 2012; 14 (61):303-6.
Chicago/Turabian StyleTakashi Yano; Soogab Lee; Truls Gjestland. 2012. "Community response to noise." Noise and Health 14, no. 61: 303-6.
To formulate Vietnamese and global noise policies, social surveys on community response to aircraft noise and combined noise from aircraft and road traffic were carried out in Ho Chi Minh City from August to September 2008 and in Hanoi from August to September 2009. In total, 1562 and 1397 responses were obtained in Ho Chi Minh City and Hanoi, respectively. The aircraft noise was measured for seven successive days, and the combined noise was measured for 24 h. Aircraft and combined noise exposures ranged from 53 to 71 dB and 73 to 83 dB Lden in Ho Chi Minh City and from 48 to 61 dB and 70 to 82 dB Lden in Hanoi, respectively. The dose–response curve for aircraft noise for Vietnam was established and fitted onto the curve for the European Union. For the same noise exposure, the aircraft noise annoyance in Hanoi was higher than that in Ho Chi Minh City because of the lower background noise level in Hanoi.
Thu Lan Nguyen; Takashi Yano; Huy Quang Nguyen; Tsuyoshi Nishimura; Hiroaki Fukushima; Tetsumi Sato; Takashi Morihara; Yoritaka Hashimoto. Community response to aircraft noise in Ho Chi Minh City and Hanoi. Applied Acoustics 2011, 72, 814 -822.
AMA StyleThu Lan Nguyen, Takashi Yano, Huy Quang Nguyen, Tsuyoshi Nishimura, Hiroaki Fukushima, Tetsumi Sato, Takashi Morihara, Yoritaka Hashimoto. Community response to aircraft noise in Ho Chi Minh City and Hanoi. Applied Acoustics. 2011; 72 (11):814-822.
Chicago/Turabian StyleThu Lan Nguyen; Takashi Yano; Huy Quang Nguyen; Tsuyoshi Nishimura; Hiroaki Fukushima; Tetsumi Sato; Takashi Morihara; Yoritaka Hashimoto. 2011. "Community response to aircraft noise in Ho Chi Minh City and Hanoi." Applied Acoustics 72, no. 11: 814-822.
Noise pollution due to road traffic is a major global concern because of its negative impact on the quality of life in communities everywhere. In Vietnam, traffic noise has become an increasingly noticeable and serious problem in large cities like Hanoi and Ho Chi Minh City. To gain more insight into the characteristics of this noise, intensive noise measurements were conducted in Hanoi and Ho Chi Minh City in September 2005 and September 2007, respectively. A comprehensive dataset of noise was obtained that included 24-h noise measurements as well as short-term noise recordings. The volume of traffic was also quantified by reproducing video camera recordings. Noise datasets from both cities were then compared with a dataset of Japanese traffic noise obtained in Kumamoto. The results showed that the traffic noise in Hanoi and Ho Chi Minh City was characterized by relatively high noise exposure levels due to the large number of motorbikes and frequent horn sounds. The sound of horns contributed a definite impact of 0–4 dB on noise exposure in Hanoi and Ho Chi Minh City, where noise levels decreased with the absence of horn sounds. Our results also showed differences in the characteristic traffic noise of Vietnam and Japan.
Hai Yen Thi Phan; Takashi Yano; Tetsumi Sato; Tsuyoshi Nishimura. Characteristics of road traffic noise in Hanoi and Ho Chi Minh City, Vietnam. Applied Acoustics 2010, 71, 479 -485.
AMA StyleHai Yen Thi Phan, Takashi Yano, Tetsumi Sato, Tsuyoshi Nishimura. Characteristics of road traffic noise in Hanoi and Ho Chi Minh City, Vietnam. Applied Acoustics. 2010; 71 (5):479-485.
Chicago/Turabian StyleHai Yen Thi Phan; Takashi Yano; Tetsumi Sato; Tsuyoshi Nishimura. 2010. "Characteristics of road traffic noise in Hanoi and Ho Chi Minh City, Vietnam." Applied Acoustics 71, no. 5: 479-485.
Vietnam is a developing country in southeast Asia, and its environment has been seriously affected by industrialization and urbanization. In large cities like Hanoi (northern Vietnam) and Ho Chi Minh City (southern Vietnam), noise emission from road traffic has been found to be a serious concern among general public. In 2005 and 2007, two large-scale socio-acoustic surveys of community response to road traffic noise were conducted to investigate human reactions to road traffic noise in these cities; the sample sizes were 1503 people in Hanoi and 1471 in Ho Chi Minh City. The noise exposure levels (Lden) were 70–83 dB in Hanoi and 75–83 dB in Ho Chi Minh City. Noise annoyance was estimated using standardized annoyance scales. For both cities, dose–response relationships were established between Lden and the percentage of highly annoyed respondents. Compared to annoyance responses of European people, Vietnamese were less annoyed by road traffic noise by about 5 dB. Hanoi respondents seemed to be more annoyed by noise than Ho Chi Minh City respondents. Conversation and sleep disturbances were not as serious as expected in either city. Furthermore, window orientation in the home was found to affect activity disturbances.
Hai Yen Thi Phan; Takashi Yano; Tsuyoshi Nishimura; Tetsumi Sato; Yoritaka Hashimoto. Community responses to road traffic noise in Hanoi and Ho Chi Minh City. Applied Acoustics 2010, 71, 107 -114.
AMA StyleHai Yen Thi Phan, Takashi Yano, Tsuyoshi Nishimura, Tetsumi Sato, Yoritaka Hashimoto. Community responses to road traffic noise in Hanoi and Ho Chi Minh City. Applied Acoustics. 2010; 71 (2):107-114.
Chicago/Turabian StyleHai Yen Thi Phan; Takashi Yano; Tsuyoshi Nishimura; Tetsumi Sato; Yoritaka Hashimoto. 2010. "Community responses to road traffic noise in Hanoi and Ho Chi Minh City." Applied Acoustics 71, no. 2: 107-114.
Evidently, a perforated pipe is an essential component in muffler systems. It has the ability to reduce the power levels of noise sources generated by flow. Muffler systems are composed of several elements joined together in series or parallel. In practical approach, each element can have one or more perforated pipe installed. This yields the ability to estimate the acoustic characteristic by the product of the individual element four-pole parameters. In this work, a method to derive the four-pole parameters of such element with consideration of higher-order mode is presented. Based on the results obtained, the parameter C was investigated systematically. Some comparisons between the experimental measurements and the predicted results are discussed. The mean flow velocity is not considered in this paper.
Nishimura Sohei; Nishimura Tsuyoshi; Yano Takashi. Acoustic analysis of elliptical muffler chamber having a perforated pipe. Journal of Sound and Vibration 2006, 297, 761 -773.
AMA StyleNishimura Sohei, Nishimura Tsuyoshi, Yano Takashi. Acoustic analysis of elliptical muffler chamber having a perforated pipe. Journal of Sound and Vibration. 2006; 297 (3-5):761-773.
Chicago/Turabian StyleNishimura Sohei; Nishimura Tsuyoshi; Yano Takashi. 2006. "Acoustic analysis of elliptical muffler chamber having a perforated pipe." Journal of Sound and Vibration 297, no. 3-5: 761-773.
Internationally standardized annoyance scales are required in order to compare community responses to environmental noises measured in various linguistic regions. ICBEN Team 6 organized an international joint study to establish standardized noise annoyance scales and has developed scales and questions in nine linguistic regions. With the exception of Japan, all of these regions were Euro-American. Thus, it has been necessary to augment the original ICBEN study by utilizing the ICBEN method to construct noise annoyance scales for use in other Asian countries, because noise pollution is becoming an increasingly important environmental issue in these countries. Also, Asian data should be compared internationally with Euro-American data. The present study reports on the use of the ICBEN method to construct annoyance scales in Chinese, Korean and Vietnamese.
Takashi Yano; Hui Ma. Standardized noise annoyance scales in Chinese, Korean and Vietnamese. Journal of Sound and Vibration 2004, 277, 583 -588.
AMA StyleTakashi Yano, Hui Ma. Standardized noise annoyance scales in Chinese, Korean and Vietnamese. Journal of Sound and Vibration. 2004; 277 (3):583-588.
Chicago/Turabian StyleTakashi Yano; Hui Ma. 2004. "Standardized noise annoyance scales in Chinese, Korean and Vietnamese." Journal of Sound and Vibration 277, no. 3: 583-588.
Path analysis was applied to data obtained in social surveys in Kumamoto and Sapporo, Japan, and Gothenburg, Sweden, to cross-culturally compare the causal models that describe the multiple stratum relationships between road traffic noise annoyance and endogenous and exogenous variables. Path models can estimate not only the direct effect of a variable on annoyance but also the indirect effect of the variable via other variables. The exogenous variables were selected from housing, personal and environmental factors, and the endogenous variables were selected from various activity disturbances and related effects, based on the results of correlation coefficients between variables and discrimination by factor analysis. An a priori path model was constructed at the start of the analysis and the structure equations for the endogenous variables were formulated. The standardized partial regression coefficients are called path coefficients and show the strength of the linkage between variables. A revised path model was constructed by deleting insignificant paths. The characteristics of annoyance responses were as follows: (1) annoyance caused by exhaust has the strongest relation to noise annoyance and (2) structures of noise annoyance were different between Japan and Sweden and between housing types, probably owing to differences in lifestyle.
T. Yano; T. Sato; M. Björkman; R. Rylander. COMPARISON OF COMMUNITY RESPONSE TO ROAD TRAFFIC NOISE IN JAPAN AND SWEDEN—PART II: PATH ANALYSIS. Journal of Sound and Vibration 2002, 250, 169 -174.
AMA StyleT. Yano, T. Sato, M. Björkman, R. Rylander. COMPARISON OF COMMUNITY RESPONSE TO ROAD TRAFFIC NOISE IN JAPAN AND SWEDEN—PART II: PATH ANALYSIS. Journal of Sound and Vibration. 2002; 250 (1):169-174.
Chicago/Turabian StyleT. Yano; T. Sato; M. Björkman; R. Rylander. 2002. "COMPARISON OF COMMUNITY RESPONSE TO ROAD TRAFFIC NOISE IN JAPAN AND SWEDEN—PART II: PATH ANALYSIS." Journal of Sound and Vibration 250, no. 1: 169-174.