The acoustic propagation of sound in the open field or in the interior can be calculated efficiently and in high quality by geometric simulation methods. However, for correct simulations, accurate surface parameters such as absorption and scattering coefficients are required. In this thesis, the scattering coefficient of different facades is simulated with established numerical methods. […]
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The presentation will introduce the company and give an insight into the practical work experience during the internship. The focus of the talk will lie on the explanation of the design and manufacturing of a Wifi Control Board. All steps, from the part selection, to schematic design, to the final assembly will be discussed. Melden […] |
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English: When the ear canal is occluded by devices such as headphones or hearing aids, the auditory perception of bone-conducted sounds is increased, which results, e.g., in an alteration of one’s own voice perception. The effect is caused by a motion of the skull that deforms the cartilage and bone to radiate sound into the […] |
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Nowadays, more and more conversations are conducted via technical aids, such as computers or mobile phones. In technology, there can be connection or processing problems that lead to disturbances in playback. As a result, audio and video signals, for example, are time-delayed, which can be noticeable and disturbing. Since short-term memory is needed, especially in […]
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Ultrasonic Metal Welding (USMW) is a widely used manufacturing technology for joining metal components in modern industry. The metal sheets which are placed above the anvil need to be bonded. The sonotrode, which is also called the horn, vibrates at high frequency and on the top of the metal sheets. The constant clamp force applied […] |
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Aircraft and wind turbine noise emissions are increasingly important issues for society due to the noise annoyance and negative health effects in local communities, as well as for the industry due to operational limitations imposed by noise regulations. The field of aeroacoustics aims at understanding the noise generation mechanisms behind these emissions and, ultimately, device […] |
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