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Visar resultat 1 - 5 av 2077 avhandlingar som matchar ovanstående sökkriterier.
1. Gearbox noise : Correlation with transmission error and influence of bearing preload
Sammanfattning : The five appended papers all deal with gearbox noise and vibration. The first paper presents a review of previously published literature on gearbox noise and vibration. The second paper describes a test rig that was specially designed and built for noise testing of gears. LÄS MER
2. A study of oscillator phase noise
Sammanfattning : .... LÄS MER
3. Low phase noise voltage controlled micro- and millimeter wave oscillators
Sammanfattning : .... LÄS MER
4. Tire/road noise : Studies of the mechanisms of noise generation, methods of measurement and road surface characterization
Sammanfattning : .... LÄS MER
5. Human response to wind turbine noise : perception, annoyance and moderating factors
Sammanfattning : Aims: The aims of this thesis were to describe and gain an understanding of how people who live in the vicinity of wind turbines are affected by wind turbine noise, and how individual, situational and visual factors, as well as sound properties, moderate the response.Methods: A cross-sectional study was carried out in a flat, mainly rural area in Sweden, with the objective to estimate the prevalence of noise annoyance and to examine the dose-response relationship between A-weighted sound pressure levels (SPLs) and perception of and annoyance with wind turbine noise. LÄS MER