http://auphonix.com/flatclampfilter Pop filters, also referred to as pop shield is designed for strengthening vocals during recording whether in a home or professional studio. It operates by decreasing the popping sounds that are created by air hitting the mic at high speeds. This little mesh object can also assist in preserving the microphone from rust brought by saliva that could be left on the mic. A few letters like P's, B's and T's can damage a vocal recording by developing huge blasts of air when spoken. Using pop shields will greatly decrease these popping sounds by busting up the air that comes along with speaking these letters.