Nose Cones

Nose cones are designed to reduce the aerodynamically induced noise present when the microphone is exposed to high wind speeds in a known direction, for example, during sound measurements in wind tunnels, ducts, etc. They replace the normal protection grid of the microphone, and have a streamlined shape with a highly polished surface giving the least possible resistance to air flow and thereby reducing the noise produced by the presence of the microphone itself.

The fine wire mesh around the nose cone permits sound pressure transmission to the microphone diaphragm while a truncated cone behind the mesh reduces the air volume in front of the diaphragm.