Lågfrekvent buller hos Vindkraftverk och Trafik
This thesis deals with noise from wind turbines and low-frequency traffic noise. The aim was to gain practical experience by using different measurement techniques, where the wind noise was measured by emission, immission, ambisonic and binaural recordings. Both examined wind turbines have tonal com...
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| Format: | Others |
| Language: | English |
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KTH, MWL Marcus Wallenberg Laboratoriet
2012
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| Online Access: | http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-101942 |
| Summary: | This thesis deals with noise from wind turbines and low-frequency traffic noise. The aim was to gain practical experience by using different measurement techniques, where the wind noise was measured by emission, immission, ambisonic and binaural recordings. Both examined wind turbines have tonal components at 500Hz and 2000Hz. From the traffic noise one could notice two strong peaks in the 1/3 octave band at 50Hz and 63Hz. The investigation of it showed that the lower peak at 50Hz came from automobiles while the one at 63Hz were from heavy trucks. The binaural recordings were used in a listening test. A listening test was conducted where 15 test subjects estimated how annoying the noise is in relation to pink noise. The result showed that the annoyance level were higher for sound containing tonal components. |
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