Windshields fitted to outdoor measuring microphones serve a dual purpose – to reduce wind-generated noise, and to protect the delicate microphone from damage by environmental factors such as rain, ice and dust.
However, the presence of a windshield inevitably affects the directional and frequency responses of the measuring system.
This paper presents results of measurements on the directional and frequency responses of a selection of windshield types under a variety of climate conditions such as rain and ice, and after typical wear such as bird damage and sunlight degradation.
The paper concludes with remarks on the potential for deviations in measurement performance due to the windshield when carrying out real-world environmental noise measurements.
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