Essays about: "bullerdämpning"
Found 4 essays containing the word bullerdämpning.
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1. A Numerical Approach for Wind Tunnel Noise Control
University essay from KTH/Marcus Wallenberg Laboratoriet MWLAbstract : A wind tunnel from the 1950s located in Bromma, Stockholm, once used for military research is today used for commercial activities. Today the tunnel is used for indoor wingsuit flight and the facility has an interest in reducing the overall noise generated by the tunnel. Acoustic measurements indicate noise problems in the 50 Hz range. READ MORE
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2. Utvärdering av planeringsverktyget GYF AP 2.0 tillämpbarhet i befintliga stadsdelar : en studie om utvecklandet av hållbara städer
University essay from SLU/Dept. of EcologyAbstract : Målet och syftet med denna studie är att utreda vilken bebyggelse, beroende på ålder, som gynnar ekosystemtjänster bäst samt att utvärdera det nya planeringsverktyget GYF AP 2.0, Grönytefaktor för allmän platsmark, validitet på äldre bostadsområden. I studien appliceras GYF AP 2. READ MORE
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3. Active Noise Control of a Forest Machine Cabin
University essay from Institutionen för systemteknikAbstract : Today, a high noise level is considered a problem in many working environments. The main reason is that it contributes to stress and fatigue. Traditional methods using passive noise control is only practicable for high frequencies. As a complement to passive noise control, active noise control (ANC) can be used to reduce low frequency noise. READ MORE
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4. Active Noise Control In Truck Cabin
University essay from Blekinge Tekniska Högskola/Institutionen för telekommunikation och signalbehandlingAbstract : The thesis is based on examinations of sound fields in a truck cabin. The main technical issue was to investigate how an active noise control system would work in a truck cabin, and also how effective it would be. .. READ MORE