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Journal ArticleDOI

Noise emitted from road, rail and air traffic and their effects on sleep

08 Aug 2006-Journal of Sound and Vibration (Academic Press)-Vol. 295, Iss: 1, pp 129-140
TL;DR: The equivalent noise level seems to be a suitable predictor for subjectively evaluated sleep quality but not for physiological sleep disturbances, where physiological sleep parameters were most severely affected by rail noise.
About: This article is published in Journal of Sound and Vibration.The article was published on 2006-08-08. It has received 180 citations till now. The article focuses on the topics: Noise & Aircraft noise.
Citations
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01 Jan 2011
TL;DR: In this article, a reverberation map of some neighborhoods in Ghent, Belgium is produced to enable fast determination of EDT and T30 on different positions in a multitude of streets, a dedicated measurement setup is mounted on the roof of a car.
Abstract: Reverberation increases sound levels in streets and aversely influences the perceived sound field quality. To assess this, it is studied if "reverberation maps" could be useful. Knowledge on street reverberation could be used as a valuable alternative to physical methods such as ray tracing, beam tracing etc. to obtain an estimate of expected noise levels and sound quality indicators. But also on itself, a map showing the reverberation times of the streets could be very informative. In this work a reverberation map of some neighborhoods in Ghent, Belgium, is produced. To enable fast determination of EDT and T30 on different positions in a multitude of streets, a dedicated measurement set-up is mounted on the roof of a car. It is investigated to what extend interpolation between measurement points and extrapolation to other areas is possible on the basis of the geometry and architectural aspects of the street and surrounding buildings, features that are available from geographical information layers.

1 citations


Cites background from "Noise emitted from road, rail and a..."

  • ...Large percentages of the urban population are exposed to high traffic noise levels, causing annoyance[1], sleep disturbance[2] and other negative health impacts[3]....

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Journal ArticleDOI
TL;DR: The results do not support the hypothesis that nocturnal traffic noise affects sleep quality whereas performance decrement is avoided by increased effort expressed by a decrease in blink rates (BRs) during a visual task, and BRs were associated with the type of noise, not with noise levels.
Abstract: This analysis is on the hypothesis that nocturnal traffic noise affects sleep quality whereas performance decrement is avoided by increased effort expressed by a decrease in blink rates (BRs) during a visual task. Twenty-four persons (12 women, 12 men; 19-28 years, 23.56 +/- 2.49 years) slept during three consecutive weeks in the laboratory while exposed to road, rail, or aircraft noise with weekly permuted changes. Each week consisted of a random sequence of a quiet night (32 dBA) and three nights with equivalent noise levels of 39, 44 and 50 dBA respectively. The polysomnogram was recorded during all nights. Every morning the participants rated their sleep quality and then completed two executive tasks (Go/Nogo-, Switch-task). Neither of the two performance tests was affected by nocturnal noise. Sleep efficiency and subjective sleep quality decreased with increasing noise levels but were not associated with the type of noise. In contrast, BRs were associated with the type of noise, not with noise levels. The results do not support the hypothesis concerning the BR. The possible reasons are discussed. However, the results do not exclude that other physiological parameters such as heart rate or brain potentials measured during the tests might have revealed alterations associated with nocturnal noise exposure. Language: en

1 citations


Cites background or methods or result from "Noise emitted from road, rail and a..."

  • ...This analysis concerned the hypothesis that nocturnal noise exposure reduces sleep efficiency and subjective sleep quality.[3,4] These disturbances are not necessarily followed by performance decrements....

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  • ...Nocturnal traffic noise has been shown to impair physiological and subjectively evaluated sleep quality.[1-4] Effects on performance the next day were, however, found in only a few studies....

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  • ...Performance was in accordance with majority of studies in the laboratory and field[3,6,25] not impaired after nocturnal noise exposure....

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  • ...As the experimental design and procedure were described in detail by Griefahn et al.[3] and Marks et al.[18] the following description concentrates on the essentials for this analysis....

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  • ...The questionnaire used here concerns several aspects of sleep quality and has been successfully applied in several studies,[3,17,30] but the poor ability to estimate correctly the quantitative and qualitative parameters of sleep is well known....

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01 Jan 2014
TL;DR: F fuzzy evaluation model was established, comprehensively evaluating the actual impact of traffic noise on residents, which made the evaluation results more scientific and reasonable.
Abstract: Establishing fuzzy evaluation method, in terms of the actual influence of the city road traffic noise to the residents, using the fuzzy theory based on the actual impact of road traffic noise on residents, taking the road traffic noise level, pollution intensity of Yichang City in China as an example, aiming at the different subjective reactions of residents living under the environment polluted by noise, which were caused by subjective factors such as population, hobbies, education, social economic condition, psychological quality and so on, fuzzy evaluation model was established, comprehensively evaluating the actual impact of traffic noise on residents, which made the evaluation results more scientific and reasonable.

1 citations


Additional excerpts

  • ...确定评语集 对居民的不同性格、爱好、文化程度、社会经济条件、心理素质等诸多主观因素产生引起的不同主 观反应的评判[13],从噪声对居民心理的干扰和对生理功能的干扰两个角度确定其评价因素。其中,对心 理干扰程度以主观烦恼度[14]进行表示,对生理功能的干扰以睡眠、思考和语言三个方面的影响程度进行 刻画,主观烦恼度的度量有 5 级、7 级至 13 级等[15] [16]。根据实际调查表明,评价等级不宜过细,将 烦恼度分为“安静”、“比较安静”、“闹”、“很闹”和“不能容忍”等 5 级。噪声对睡眠、思考和 语言的干扰由轻至重分为 5 个等级。考虑到上述原因并结合各因素度量等级的语言表述,确定评语集 V2 为{无干扰(v21), 轻度干扰(v22), 中度干扰(v23), 较严重干扰(v24), 严重干扰(v25)}。 2....

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01 Jan 2010
TL;DR: In this paper, the effects of noise on sleep at night and day and on after-effects i.e. sleepiness and impaired performance during a following 8-h work shift were investigated.
Abstract: Introduction. This study focused on the effects of noise on sleep at night and day and on after-effects i.e. sleepiness and impaired performance during a following 8-h work shift. Methods. Forty-eight persons (23 male, 25 female; 19-30 yrs) slept in a balanced order four consecutive nights (23-7 h) and four consecutive days (14-22 h) in the laboratory and performed thereafter 8-h work shifts in the morning or in the night, respectively. Sleep was indicated by the Sleep Efficiency Index (SEI) and the Sleep Disturbance Index (SDI). Sleepiness was rated after awakening and hourly during work shifts, and during the latter followed by four performance tests. The first and another randomly chosen sleep period were noise-free. During the six other sleep periods the participants were exposed to railway and to road traffic noise with equivalent noise levels between 41 and 56 dBA. Results. SEI and SDI indicated worse sleep during days than during nights but were only moderately affected by noise. Sleepiness was the only variable where noise and shift type showed an interaction. Soon after awakening sleepiness was rated higher after night than after day sleep and higher after noise exposure during sleep. Sleepiness was after sleep in noise throughout the work shifts higher than after sleep in quiet and reaction times were then prolonged. Conclusion. The same noise had the same effect on day sleep and on night sleep. In the real life situation noise is about 8 to 15 dBA higher during the day than during the night suggesting stronger sleep disturbances of day sleep.

1 citations


Cites result from "Noise emitted from road, rail and a..."

  • ...Such a discrepancy between event-related awakenings and integrated measures is verified by other studies and indicates the ability of the organism to recover soon from acute sleep disturbances [Basner et al. 2004, Griefahn et al. 2006, Marks et al. 2008]....

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  • ...This is supported by the results of several other studies where sleepiness was not only evaluated higher after nocturnal noise exposure but where sleepiness was objectively verified by an increased pupillary unrest index [Basner et al. 2008, Bonnefond et al. 2008, Griefahn et al. 2006]....

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  • ...These results are confirmed by former studies [Basner et al. 2008, Bonnefond et al. 2008, Elmenhorst et al. 2010,Griefahn et al. 2006, Marks & Griefahn 2005, Öhrström 1995] that were, however restricted to the first hour post-awakening....

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Dissertation
01 Jan 2017
TL;DR: Investigating whether or not iOS smartphones and other smart devices (Apple iPhones and iPods) could be used as reliable instruments to measure noise exposures to determine if the results differed by microphone or noise measurement application.
Abstract: Occupational noise exposure is one of the most frequent hazards present in the workplace; up to 22 million workers have potentially hazardous noise exposures in the US. As a result, noise-induced hearing loss is one of the most common occupational injuries in the United States. Workers in manufacturing, construction, and the military are at the highest risk for hearing loss. Despite the large number of people exposed to high levels of noise at work, many occupations have not been adequately evaluated for noise exposure. The objective of this experiment was to investigate whether or not iOS smartphones and other smart devices (Apple iPhones and iPods) could be used as reliable instruments to measure noise exposures. For this experiment three different types of microphones were tested with a single model of iPod and three generations of iPhones: the internal microphones on the device, a low-end lapel microphone, and a high-end lapel microphone marketed as being compliant with the International Electrotechnical Commission’s (IEC) standard for a Class 2-microphone. All possible combinations of microphones and noise measurement applications were tested in a controlled environment using several different levels of pink noise ranging from 60 to 100 dBA. Results were compared to simultaneous measurements made using a Type 1 sound level measurement system. Analysis of variance and Tukey's honest significant difference (HSD) test were used to determine if the results differed by microphone or noise measurement application.

1 citations


Cites background from "Noise emitted from road, rail and a..."

  • ...Community noise can also make it difficult to fall asleep or stay asleep.(61,62) Sleep disturbance is also a risk factor for cardiovascular disease (CVD) which further complicates the relationship between noise exposure and CVD....

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References
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Journal ArticleDOI
TL;DR: Techniques of recording, scoring, and doubtful records are carefully considered, and Recommendations for abbreviations, types of pictorial representation, order of polygraphic tracings are suggested.
Abstract: With the vast research interest in sleep and dreams that has developed in the past 15 years, there is increasing evidence of noncomparibility of scoring of nocturnal electroencephalograph-electroculograph records from different laboratories. In 1967 a special session on scoring criteria was held at the seventh annual meeting of the Association for the Psychophysiological Study of Sleep. Under the auspices of the UCLA Brain Information, an ad hoc committee composed of some of the most active current researchers was formed in 1967 to develop a terminology and scoring system for universal use. It is the results of the labors of this group that is now published under the imprimatur of the National Institutes of Health. The presentation is beautifully clear. Techniques of recording, scoring, and doubtful records are carefully considered. Recommendations for abbreviations, types of pictorial representation, order of polygraphic tracings are suggested.

8,001 citations

01 Jan 2006
TL;DR: In this article, the authors present technical prescriptions concerning the design and construction of agricultural or forestry tractors, as regards the rollover protection structures, as well as the approximation of the laws of the Member States to enable the EC typeapproval procedure provided for in Directive 2003/37/EC to be applied in respect of each type of tractor.
Abstract: (2) Directive 77/536/EEC is one of the separate Directives of the EC type-approval system provided for in Council Directive 74/150/EEC of 4 March 1974 on the approxi­ mation of the laws of the Member States relating to the type-approval of wheeled agricultural or forestry tractors, as replaced by Directive 2003/37/EC of the European Parliament and of the Council of 26 May 2003 on type-approval of agricultural or forestry tractors, their trailers and interchangeable towed machinery, together with their systems, components and separate technical units ( 5 ), and lays down technical prescriptions concerning the design and construction of agricultural or forestry tractors, as regards the roll-over protection structures. Those technical prescriptions concern the approximation of the laws of the Member States to enable the EC type-approval procedure provided for in Directive 2003/37/EC to be applied in respect of each type of tractor. Consequently the provisions laid down in Directive 2003/37/EC relating to agricultural and forestry tractors, their trailers and interchangeable towed machinery, together with their systems, components and separate technical units, apply to this Directive.

1,441 citations

Journal ArticleDOI
TL;DR: Better estimates of the confidence intervals due to the improved model of the relationship between annoyance and noise exposure are provided, which is easier to use for practical calculations than the model itself.
Abstract: We present a model of the distribution of noise annoyance with the mean varying as a function of the noise exposure. Day-night level (DNL) and day-evening-night level (DENL) were used as noise descriptors. Because the entire annoyace distribution has been modeled, any annoyance measure that summarizes this distribution can be calculated from the model. We fitted the model to data from noise annoyance studies for aircraft, road traffic, and railways separately. Polynomial approximations of relationships implied by the model for the combinations of the following exposure and annoyance measures are presented: DNL or DENL, and percentage "highly annoyed" (cutoff at 72 on a scale of 0-100), percentage "annoyed" (cutoff at 50 on a scale of 0-100), or percentage (at least) "a little annoyed" (cutoff at 28 on a scale of 0-100). These approximations are very good, and they are easier to use for practical calculations than the model itself, because the model involves a normal distribution. Our results are based on the same data set that was used earlier to establish relationships between DNL and percentage highly annoyed. In this paper we provide better estimates of the confidence intervals due to the improved model of the relationship between annoyance and noise exposure. Moreover, relationships using descriptors other than DNL and percentage highly annoyed, which are presented here, have not been established earlier on the basis of a large dataset.

795 citations


"Noise emitted from road, rail and a..." refers background in this paper

  • ...But the underlying concept of energy equivalence is debated, at least in view of a meta-analysis which, based on 55 social surveys with overall about 58 000 interviews, has clearly shown that aircraft annoys most and rail noise the least, whereas road traffic noise has an intermediate position [2,3]....

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  • ...This ‘bonus’ bases on extended social surveys whereafter aircraft noise annoys most and rail noise the least, which was most clearly shown by the meta-analysis performed by Miedema and co-workers [2,3]....

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  • ...Type of traffic noise The hypothesis adopted for this study bases firstly on the replicated observation that man responds more likely to meaningful than to neutral noises even during sleep [7,8] and secondly on a meta-analysis according to which aircraft noise annoys most and rail noise the least [2,3]....

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01 Jan 1968

734 citations


"Noise emitted from road, rail and a..." refers methods in this paper

  • ...So, this study relied on the polysomnogram which was recorded and evaluated according to internationally accepted criteria [9]....

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  • ...Polysomnogram The polysomnogram (2 EEG, 2 EOG, 1 EMG) was continuously recorded throughout the nights and evaluated according to international recommendations [9]....

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The equivalent noise level seems to be a suitable predictor for subjectively evaluated sleep quality but not for physiological sleep disturbances.