| − | A '''microphone''' (or ''mike'') is an [[electric]] auditory pickup device. It has a [[sensor]] that detects the vibrations ([[sound]]) in the [[air]] and converts them into an analog or digital signal. Microphones are used in numerous devices such as [[telephone]]s, [[cellular phone]], [[amateur radio]], and[[two-way radio]]s. | + | A '''microphone''' (or ''mike'') is an [[electric]] auditory pickup device. It has a [[sensor]] that detects the vibrations ([[sound]]) in the [[air]] and converts them into an analog or digital signal. Microphones are used in numerous devices such as [[telephone]]s, [[cellular phone]], [[amateur radio]], and two-way radios. |