A Moving Coil Microphone

- Apr 09, 2019-

A moving coil microphone is a device that converts sound into an electrical signal. The moving coil microphone is made by the phenomenon of electromagnetic induction. When the sound wave vibrates the diaphragm, the coil (called the voice coil) connected to the diaphragm vibrates together, and the voice coil vibrates in the magnetic field, and the induced current is generated. The magnitude and direction of the induced current are changed. The amplitude and frequency of the change are determined by the sound wave. This signal current is amplified by the loudspeaker and transmitted to the speaker, and the amplified sound is emitted from the speaker.

 

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