Microphone arrays for imaging of aerospace noise sources (2018)
Abstract / truncated to 115 words
With the continuous growth in demand for air traffic and wind turbines, the noise emissions they generate are becoming an increasingly important issue. To reduce their noise levels, it is essential to obtain accurate information about all the sound sources present. Phased microphone arrays and acoustic imaging methods allow for the estimation of the location and strength of sound sources. Experiments with these devices are one of the main approaches in the current research in aeroacoustics, along with computational simulations or noise prediction models. This thesis presents a detailed literature review on the most common aerospace noise sources, challenges in aeroacoustic measurements, and the acoustic imaging methods typically used to overcome them. Practical recommendations are ... toggle 6 keywordsphased microphone arrays – beamforming – acoustic imaging – aeroacoustics – aircraft noise – wind turbine noise.
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