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Visar resultat 21 - 25 av 252 uppsatser som matchar ovanstående sökkriterier.
21. Variable acoustics in multi-functional stadiums
Master-uppsats, KTH/Teknisk akustikSammanfattning : This paper handles the background theory, methods and results of the master thesis project titled "Variable acoustics in multi-functional stadiums". \\ The purpose of the project was to investigate whether variable room acoustics could be applicable to large multi-functional stadiums to improve their ability to adapt the soundscape in the stadium for different types of events. LÄS MER
22. Lidar data processing for railway catenary systems
Master-uppsats, Luleå tekniska universitet/Drift, underhåll och akustikSammanfattning : Railway Catenary systems play a crucial role in the safe and reliable transportation of goods and people throughout the world. Monitoring the catenary infrastructure is crucial for safety purposes and therefore requires inspections. However, the current inspection methods are not sufficient for detecting all possible failure modes. LÄS MER
23. Ingjutna ventilationskanalers påverkan på luftljudsisolering i flerbostadshus
Kandidat-uppsats, Umeå universitet/Institutionen för tillämpad fysik och elektronikSammanfattning : Good sound insulation is highly valued by Swedish tenants. To be able to achieve that, one must look at many aspects, such as room volumes, floor planes, flooring, but also what materials that are to be built with and how it ́s constructed. The use of cast-in ventilation ducts in the load-bearing structures is a common method in Sweden. LÄS MER
24. Skogsklang : En studie om skogsmiljöers akustiska reflektioner
M1-uppsats, Mittuniversitetet/Institutionen för elektronikkonstruktionSammanfattning : Denna studie har tittat på hur olika skogsmiljöer kan påverka efterklangen. Studien har genomförts med inspelningar av impulsrespons i tre testmiljöer och analyserat dessa inspelningar. Syftet var att undersöka hur efterklangen karaktäriseras i olika typer av skog och hur detta sedan kan tillämpas i postproduktion av ljud. LÄS MER
25. Numerical study of a vibroacoustic wave trap for e-vehicles
Master-uppsats, KTH/Teknisk akustikSammanfattning : The transition from internal combustion engine to battery electric cars is accompanied by a shift on the NVH issues damaging the passenger comfort. The rolling noise generated by the wheels and tyres is in particular characterized by an increasing attention from OEMs and car manufacturers. LÄS MER