Search for dissertations about: "sound field"
Showing result 21 - 25 of 213 swedish dissertations containing the words sound field.
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21. Spindle vibration and sound field measurement using optical vibrometry
Abstract : Mechanical systems often produce a considerable amount of vibration and noise. To be able to obtain a complete picture of the dynamic behaviour of these systems, vibration and sound measurements are of significant importance. Optical metrology is well-suited for non-intrusive measurements on complex objects. READ MORE
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22. Single layer near-field acoustic imaging in space-invariant reflective environments
Abstract : The visualization of optical fields, or widely known as photography, is a common practice that can also be applied to acoustic fields. No less than three decades of research in acoustic imaging demonstrate its potential and relevance in plenty applications such as sound source identification and localization, as well as characterization of noise generation mechanisms. READ MORE
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23. Experimental Validation of a Phased Array Ultrasonic Testing Probe Model and Sound Field Optimization
Abstract : New manufacturing technologies are developed to facilitate flexible product designs and production processes. However, the quality of the final products should not be compromised, especially for safety prioritized industries, e.g. aerospace industry. READ MORE
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24. Classroom noise : exposure and subjective response among pupils
Abstract : In Sweden, all children must have access to education of equal value and the curriculum points out the importance of a good environment for development and learning. Modern working methods differ a lot from the traditional. Teaching nowadays is focused on problem-solving. Students are more interactive, working in groups and projects. READ MORE
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25. Acoustic scattering in ducts and influence of flow coupling
Abstract : The subject of this thesis is the acoustic properties offlow duct area expansions and the influence of flow-acousticcoupling at sharp edges. For low Mach number flow, significantinteraction between the sound field and the flow field canoccur at such points of flow separation. READ MORE