An electroacoustic device which delivers an electrical signal when actuated by a sound. A microphone consists of an acoustic system that supplies mechanical (acoustic) energy to a transducer, which converts the energy into electrical energy. Microphones are classified by their acoustical parameters, by their method of transduction, and by their directional characteristics.

See capsulecardioidsupercardiodhypercardioidribbon microphonemoving coil microphonecondenser microphonedynamic microphoneboundary microphoneSoundfield microphoneLavalier microphonecontact microphone, and omnidirectional