Neumann WS 89 Foam Windscreen for U89, and TLM193 MicrophonesClose range sounds, wind, and fast movements of the microphone boom, all may cause interfering noises. To avoid these unwanted sounds, use the WS89 windscreen. 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