Multistage turbulence shield for microphones

摘要

An acoustic sensing means such as a microphone (30) or a thin-film sensor is located in a flowing medium. To prevent the sensing of flow generated noise, the sensing means (30) is separated from the flowing medium by at least three stages of shielding. In a preferred embodiment, the sensing means (30) is located within a foam shield (112) which is located in a frame (104) covered by a fabric shield (102) and which is, in turn, located in a second frame (105) covered by a second fabric shield (103). A spandex fabric is suitable for use in the present invention.