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- Kihlman, Tor, 1934, et al.
(författare)
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Monitoring the long-term development of the community noise situation.
- 2004
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Ingår i: Proceedings of the 33rd International Congress and Exposition on Noise Control Engineering, Prag, Czech Republic, August 22-25. 6 pages..
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Konferensbidrag (refereegranskat)abstract
- The community noise situation changes slowly and the goal – a community without noise disturbances – is very remote. It is, however, important to monitor if the development goes in direction of increasing or decreasing problems. The studies in the program Soundscape support to health have given some quantitative data on how differences in the acoustic soundscape can influence residents’ perceived soundscapes as well as their annoyance and sleep disturbance. It is insufficient to look only at the sound pressure levels outside the most exposed facades. Cost effective measures to reduce the adverse effects and promote positive effects can retrieved from soundscape studies. Monitoring the development by sufficiently accurate acoustic measurements in a sufficient number of points is very expensive. A better way is to try to measure the adverse effects of the community noise. Annoyance is one adverse candidate variable that can be measured at reasonable cost. A first study of this kind has been performed in Sweden through telephone interviews directed to 2000 persons. The results are promising.
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- Öhrström, Evy, 1946, et al.
(författare)
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Annoyance and activity disturbances caused by road traffic noise - field studies on the influence of access to quietness.
- 2004
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Ingår i: The 33rd International Congress and Exposition on Noise Control Engineering, Prag, Czech Republic, August 22-25, 7 pages.
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Konferensbidrag (refereegranskat)abstract
- Socio-acoustic surveys were carried out to assess health effects of various soundscapes in residential areas. The study was designed to test the hypothesis that having access to a quiet side of the dwelling enhances recovery and decreases annoyance and other adverse health effects related to noise. The dwellings in the different study sites chosen were exposed to sound levels from road traffic noise ranging from about LAeq,24h 45 dB to 68 dB at the most exposed side. The study involved 956 individuals aged 18 to 75 years. Half of them lived in dwellings with access to a quieter side and the other half had similar sound levels at the most exposed side but had no access to a quiet side. The results give clear evidence of health benefits of having access to a shielded, quieter section of the dwelling. Percentage annoyed respondents for sound levels of LAeq,24h 53-57 dB was lower (11 versus 22 %) if people had access to a shielded, quieter side of the dwelling. For sound levels of LAeq,24h 63-68 dB, the difference in annoyance was larger (38 versus 57 %) among those who had access to a quieter side. Disturbance of daytime restoration was the most pronounced daytime disturbance next to annoyance and possibilities to open the windows.
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- Öhrström, Evy, 1946
(författare)
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Longitudinal surveys on effects of changes in road traffic noise-annoyance, activity disturbances, and psycho-social well-being.
- 2004
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Ingår i: The Journal of the Acoustical Society of America. - : Acoustical Society of America (ASA). - 0001-4966. ; 115:2, s. 719-29
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Tidskriftsartikel (refereegranskat)abstract
- The adverse effects of long-term exposure to a high volume of road traffic were studied in socio-acoustic surveys in 1997 and in 1999 after a substantial reduction in road traffic. The results obtained in 1997 showed a similar response pattern as in previously performed studies in the area in 1986 [Ohrström, J. Sound Vib. 122, 277-290 (1989)]. In 1999, road traffic had been reduced from 25000 to 2400 vehicles per day, and this resulted not only in a large decrease in annoyance and activity disturbances, but also in a better general well-being. The results suggest that a reduction in both noise and other pollutants from road traffic contribute to these effects. To be able to use the outdoor environment and to have the possibility to keep windows open is essential for general well-being and daily behavior, which implies that access both to quiet indoor and outdoor sections of the residency is of importance for achievement of a healthy sound environment. More knowledge of long-term health consequences of exposure to noise and simultaneous pollutants from road traffic is needed. Studies should focus more on "softer" health outcomes and well-being than hitherto and preferably be performed in connection with traffic abatement measures.
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- Öhrström, Evy, 1946
(författare)
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Samhällsbuller - Omfattning, hälsoeffekter och bedömning
- 2004
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Ingår i: Miljökonsekvensbeskrivning och hälsa - Några föroreningskällor - beskrivning och riskbedömning. Socialstyrelsen. - 9172018666 ; , s. 74-93
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Bokkapitel (övrigt vetenskapligt/konstnärligt)
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| 10. |
- Öhrström, Evy, 1946
(författare)
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Sleep disturbance from road traffic noise - field studies on the influence of access to quietness.
- 2004
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Ingår i: Proceedings of the 33rd International Congress and Exposition on Noise Control Engineering, Prag, Chec Republic August 22-25. 7 pages.
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Konferensbidrag (refereegranskat)abstract
- Socio-acoustic surveys were carried out within the research programme “Soundscape Support to Health” to assess sleep disturbances and other health effects of various soundscapes in residential areas. It was hypothesised that having access to a quiet side outside bedroom windows enhances recovery and decreases sleep disturbances related to noise. The dwellings in the different study sites chosen were exposed to different sound levels from road traffic noise ranging from about LAeq,22-06h 37 to 61 dB outside bedroom windows. The study involved 956 individuals. Half of them lived in dwellings with bedroom windows facing a quieter side and the other half had bedroom windows facing the most exposed side of the dwelling. A verbal category scale on frequency and degree of disturbance was used for evaluation of sleep disturbances due to road traffic noise (ability to sleep with bedroom windows slightly open, falling asleep, awakenings and sleep quality). Sleep quality was also evaluated by questions without reference to road traffic noise. The studies confirm previous findings of a relationship between sleep quality and individual factors such as state of health, psychological and physiological wellbeing and age, as well as perceived noise-induced sleep disturbances. The results show a strong relationship between sleep disturbances due to road traffic noise and demonstrate a large benefit from having access to a bedroom that faces a quiet side. The threshold for reported noise-induced sleep disturbances found in this study was a sound level outside bedroom windows 2 m from the façade LAeq,22-06 42-46 dB (windows slightly open).
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