A material, usually some form of acoustically-transparent foam and/or mesh, used on or in microphones to reduce the effects of breath blasts and air currents.
An acoustically transparent shield around a microphone cartridge that reduces popping sounds. Often a ball-shaped grille, foam cover or fabric barrier.
A screen placed over a microphone that reduces the effect of speech plosives and wind.
A pop filter or pop shield is an anti-pop noise protection filter for microphones. It serves to reduce popping and hissing sounds in recorded speech and singing.