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Close range sounds,
wind, and fast movements of the microphone boom, all may cause
interfering noises. To avoid these unwanted sounds, windscreen
accessories are available.
Typically, they are made out of open-cell polyurethane foam. These
windscreens do not cause interfering resonances and do not
influence the directional pattern. Only in the upper frequency
range is the output level slightly attenuated.
The wind noise attenuation was measured without electrical
filtering in a turbulent air stream traveling at 20 km/h, generated
by a noiseless wind machine.
Wind noise attenuation 27 dB. Attenuation at 15 kHz 3 dB. Ø 90
mm.
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