In order to detect the direction of the sound source in industrial applications, it was necessary to determine the optimal arrangement of 24 microphones in a beamformer for the detection of frequencies from 100 Hz to 8000 Hz and to design a prototype beamformer that is suitable for outdoor use and is therefore resistant to rain and can be transported with a car. Optimal geometry is determined by comparing the results of numerical simulations of the beamformer’s response with different geometries in different frequency ranges, different angles of the sound source and different amplitudes of noise on the microphones based on the ratio between the maximum value of the signal strength and the average value of the signal strength in all other directions and based on visually examining the graphs. It was found that the best geometry of the microphone configuration is that of eight bars and two microphones at the ends of the bars, a model of the prototype was designed based on the results.
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