A computational study on wind noise generated by screened microphone

Publication Type:
Conference Proceeding
21st International Congress on Sound and Vibration 2014, ICSV 2014, 2014, 3 pp. 2461 - 2467
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Wind screens are widely used in outdoor sound measurement to eliminate the wind noise as much as possible, which makes the windscreen design become important. A number of experiments have been carried out using the bare and screened microphones to investigate the wind noise reduction of the windscreen. However, experimental data is hard to obtain and the number is usually limited, therefore the quantitative research on the wind screen is restricted. In this paper, the relationship between wind noise reduction and wind screen resistivity is investigated by employing the computational fluid dynamics (CFD) software instead of the experiment. It is found that the wind noise reduction varies drastically when the material resistivity is low while the variation is gently for large resistivity, and the highest wind noise reduction can be achieved with a material of a medium flow resistivity.
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