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En utredning kring en ny bullerlösning vid trafikleder
… this Master Thesis has been to investigate the possibilities for a new type of noise reduction solution that could decrease the negative effects resulting from larger traffic roads. The idea has been to construct a noise barrier with a roof ? like a tunnel placed on a road. The …
… aim of this inquiry was to investigate the most appropriate measures to reduce noise impacts from road traffic on the Nydala recreational area in Umeå municipality due to the planned re-routing of the E4 motorway to an existing road along this area. The sound environment is an …
… in central living in today’s cities has led to an increasing effect of traffic noise pollution, and today 20% of the inhabitants in Sweden suffer from noise a level that exceeds the limits. At the same time the traffic keeps increasing, and recent researches shows that traffic …
Om bullrets inverkan i öppna kontorsmiljöer
… false memories were affected by the exposure of an extraneous background noise. The studies main hypotheses were based on previous research on how extraneous noise affect the cognitive ability and the creation of false memories: 1) that an extraneous background noise increases …
… of surface defects on the wire. The ferritic stainless steels cause a noise when testing and this noise complicates the detection of defects.Because of this, a study was made of how the noise related to factors such as steel grade, temperature, size and velocity. By observing …
Hur planeras en bullerfri stad?
… institutionen, Uppsatser, Uppsala universitet. This essay is about noise pollution caused by urbanization. The field study takes place in Uppsala and explores their organization of handling problems with noise pollution caused by traffic. Noise pollution has long been neglected …
… now it is time for something else to enter the stage. The technology of active noise reduction can for exmple also be used in ventilation systems for reducing ventilation noise. An active control system principally consists of four important components, namely the downstream …
… are a threat to the wellbeing of the animals, such as mixing of groups, loud noise and transportation. A new law will be implemented in 2006 in Sweden that prohibits mechanical noise exceeding 65 dB in abattoirs. The purpose of the research presented in this paper was to examine …
En revolution i kompositionsteknik?
Noise music is created around sounds not often welcome in a musical context. Since the birth of electronic music in the 1950s a new perspective on composing has emerged. In electronic music, sounds and their timbre are as much important as melody, harmony and rhythm. This …
… now it is time for something else to enter the stage. The technology of active noise reduction can for exmple also be used in ventilation systems for reducing ventilation noise. An active control system principally consists of four important components, namely the downstream …
Noise in schools can have negative effect on the teaching environment and speech perception. The national Child Environmental Health Surveys (BMHE) conducted in 2003 and 2011 studied how 12-year olds experience their sound environment in school. Results showed that the number of …
- I planerade bostäder på Haga
… is situated between Hagaleden and the housing area to absorb part of the noise from the road. The design of the housing area is creating a silent backyard. The idea of building houses in this place is to create an attractive living in central town and close to the river. The air …
Detta arbete handlar om noise och hur det påverkar människans arbetsminne. Den litterära bakgrunden presenterar vad noise är, hur noise fungerar som musik samt en generell överblick över minne och arbetsminnet. Problemet som undersöktes var om noise kunde påverka förmågan att …
Normalvärden för barn i åldrarna 7, 10 och 13 år
… balanced word lists are used when obtaining speech recognition scores in noise. These lists are designed for adults, but are still used for children. To properly obtain speech recognition scores in noise for children, normative data is needed to show what differences there are …
Noise damping in a Shift-by-Wire gear shifter
… to compete. One parameter of quality is the components tolerance against NVH(Noise, Vibraion & Harshness) aspects. Kongsbergs Automotive has developed a new gear shifter platform (Shift-by-Wire) that is sold to Alfa Romeo and used in of their car models. However, the company is …
