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 tillgodogöra sig visuell information mer än vad vitt brus gjorde. För att få ett svar på frågan skapades två versioner av ett enkelt spelmoment där testpersonerna, indelade i två grupper, fick se en siffersekvens som sedan skulle skrivas ner. Samtidigt spelades i spelmomentet antingen Noise eller vitt brus upp.

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 important part in the experience when we are visiting recreational areas. Noise is not only disturbing; the liberty from unwanted sounds also allows us to perceive natural sounds that are a benefit for the cultural experience. Therefore it is important to take actions to protect this well used area from traffic Noise. The reasonable options to avoid Noise impact in this case are to lower the speed limit, using a Noise reducing coating or use Noise protection screens and walls.

The purpose of 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 choice of material has been focused on transparent materials in order to lower visual intrusion and barrier effects. This project idea is called the Noise tunnel.After having investigated the current offer of Noise solutions, it has been concluded that these solutions rarely provide a sufficient level of Noise reduction ? at least not when government regulations of acceptable Noise levels are applied.

Milosevic, S. 2014. Buller ? Hur planers en bullerfri stad?. Kulturgeografiska institutionen, Uppsatser, Uppsala universitet. This essay is about Noise pollution caused by urbanization.

This study aimed to explore how 31 collage students' cognitive performance and their ability to create 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 the ability to create false memories, 2) that an extraneous background Noise impairs the learning of cognitive information, 3) that an extraneous background Noise contributes to an increased representation of fictional words, 4) that an extraneous background Noise impedes the ability to understand speech . The results showed a tendency in which false memories increased in the condition without background Noise, a result which goes in the opposite direction of the hypothesis. Furthermore, the result supported the hypothesis that the extraneous background Noise impairs the learning of cognitive information. The results also showed that there was no effect between the conditions regarding the representation of fictional information.

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 composing perspective is not often observed. Therefore I have examined a musical genre that stretches the boundaries of what we consider music, sound, Noise, beautiful and terrible.

The goal of this work is to summarize the calculations for scaling and Noise of twoportadaptor. Two different methods has been described and used for the final results..

Active headsets have been on the market for years and 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 error microphone, the upstream detection or reference microphone, the digital signal processor (DSP) and a loudspeaker. The upstream reference microphone listen to the primary ventilation Noise and sends it to the DSP which makes a phase shift to the signal and sends it to the loudspeaker. The loudspeaker sends out the opposite waveform of the incoming one and reduce the primary ventilation Noise.

Active headsets have been on the market for years and 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 error microphone, the upstream detection or reference microphone, the digital signal processor (DSP) and a loudspeaker. The upstream reference microphone listen to the primary ventilation Noise and sends it to the DSP which makes a phase shift to the signal and sends it to the loudspeaker. The loudspeaker sends out the opposite waveform of the incoming one and reduce the primary ventilation Noise.

The report examines the factors which may be a contributing cause to the problems that are present when ferritic stainless steel are eddy current tested in a warm condition. The work is carried out at Fagersta Stainless AB in Fagersta which manufactures stainless steel wire. In the rolling mill there is an eddy current equipment for detection 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 the signal and with the possibilities to change the equipment settings the capability to let a signal filter reduce the Noise level were evaluated.

Too high levels of Noise lead to various health problems and cost society billions of SEK peryear. In this thesis we have examined a model of the A40E articulated hauler at VolvoConstruction Equipment in Braås. We have tried to reduce cabin Noise in an articulated hauler,while also providing a way on how to proceed with a machine when the cabin does not measureup to the sound requirement. The best way to find leaks were with a reference source of model4205 and its speaker HP 1001 from Brüel & Kjaer in the cab and then walk around and listen towhere the reference source was more prominent. In this way, we found that the edges and theplugs were sensitive areas.

Wind power in Sweden is expanding in response to the government's decision that 49% of Sweden's power should originate from renewable energy sources by the year 2020. Problems with Noise and sound emissions related to wind turbines are a constant argument against the wind power expansion and this paper means to examine if vertical axis wind turbines might be a viable alternative to the conventional horizontal design for Noise sensitive areas. In order to determine factors like difference in frequency, Noise propagation and Noise emission level, measurements of both horizontal and vertical axis wind turbines have been completed and the data analyzed with MATLAB. It is shown that there is a difference in how the Noise from the two types of turbines propagates due to avariation in the frequency spectra of the emitted sound. It is also shown that vertical axis wind turbines generate a lower sound emission with less intensity inthe lower frequencies..

Noise is a growing health problem. People are not always aware of the injuries that Noise can cause. The media culture of today has a big influence on teenagers. This is caused by portable music players, computers, concerts etc. The schools are having larg classes and that can cause a lot irrelevant speech during lessons.

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 pupils that experience annoyance from Noise increased from 2003 to 2011.Aim: The aim of this study was to study how 12-year olds perceive their sound environment in school.Methodology and material: A quantitative questionnaire survey was conducted in the sixth grade at two schools. The questionnaire used included questions from BMHE and self-produced questions. Sixtynine students answered the questionnaire.Results: Over 50 % of the respondents experience annoyance from Noise in school several times a week.

Landscape architecture is a visual profession, but other senses also affect our interpretation of a place. Sounds can give us a lot of information about an environment, and they are often perceived as positive. Despite this, research about outdoor sounds most often focus on the reduction of unwanted sounds ? Noise ? but the absence of Noise does not result in a good soundscape. To accomplish this, sounds we appreciate are needed.