Microphone meaning

mīkrə-fōn
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The definition of a microphone is something you talk into that magnifies your voice or makes it louder.

An example of microphone is something a singer sings into so people in the back row can hear him.

noun
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An instrument that converts sound waves into an electric current, usually fed into an amplifier, a recorder, or a broadcast transmitter.
noun
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A device that converts sound waves into analogous electrical waves. Usually called a "mic" or "mike," it contains a flexible diaphragm composed of film or foil that vibrates as it makes contact with the sound. The diaphragm movement modulates an electrical current by various methods. In a carbon mic, used in telephones for more than a hundred years, the diaphragm alters the pressure in carbon grains, changing its resistance.Condenser MicrophonesIn a condenser mic, also called an "electrostatic mic" or "capacitor mic," the diaphragm changes the capacitance between itself and a metal plate, both acting as electrodes. The widely used electret mic has a charged dielectric between the electrodes that generates voltage.Crystal and Dynamic MicrophonesCrystal microphones use a piezoelectric diaphragm that produces voltage when subjected to the sound waves (mechanical pressure).Dynamic mics, which are like speakers in reverse, use a diaphragm attached to a movable coil that generates voltage as air moves the coil between the poles of a magnet.DirectionalityUnidirectional shotgun and cardioid mics aimed at a sound source eliminate much of the ambient noise, whereas omnidirectional microphones capture everything in the surrounding environment. The cardioid name comes from its heart-shaped pickup pattern. In the past, bidirectional mics were used for interviews; however, two unidirectional mics are commonly used instead.
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A device containing a transducer for converting sound waves into electrical signals that can then be amplified, transmitted, and output through a speaker. See also speaker and transducer.
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An instrument containing a transducer that converts the mechanical energy of sound waves into an electric signal, used in telephony, radio, sound amplification, etc.
noun
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A device (transducer) used to convert sound waves into a varying electric current; normally fed into an amplifier and either recorded or broadcast.
noun
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To put one or more microphones on or in.
verb
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