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- W603987497 abstract "To create acceptable sound environments in residential areas along heavily traveled main roads and railways, a common procedure is to build noise barriers. Noise barriers reduce residents’ noise annoyance. However, the extent of annoyance-reduction may not be predictable from the corresponding reduction in A-weighted sound level. One reason for this is that noise barriers not only reduce the sound level, they also change the character of the noise, which may influence perceived annoyance. It is therefore a need for psychophysical research on the effect of noise mitigation on perceived annoyance. Two experiments were conducted, involving road-traffic and railway noise recorded with or without the influence of noise barriers. A linear function described fairly well the relationship between A-weighted sound level and perceived annoyance. However, road-traffic noise recorded behind one barrier was found to be more annoying than predicted from the linear function. Zwicker Loudness level was found to be a better indicator of perceived annoyance than A-weighted sound level. This was especially true for sounds with relatively large proportion of low-frequency content. This is relevant for noise barriers, which always reduce high frequencies more than low frequencies and, thereby, increase the relative proportion of low-frequency content." @default.
- W603987497 created "2016-06-24" @default.
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- W603987497 date "2006-01-01" @default.
- W603987497 modified "2023-09-27" @default.
- W603987497 title "Noise-mitigation efficiency of barriers." @default.
- W603987497 hasPublicationYear "2006" @default.
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