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.Windscreen for USM 69 i and SM 69 fet. Wind noise attenuation 20 dB. Attenuation at 15 kHz 3 dB.Diameter 45 mm, length 70 mm. Color black.
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