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Microphone - Dynamic
Microphone - Dynamic
Microphone - Dynamic

Microphones are used in many applications such as telephoneshearing aidspublic address systems for concert halls and public events, motion picture production, live and recorded audio engineeringsound recordingtwo-way radiosmegaphones,radio and television broadcasting, and in computers for recording voice, speech recognitionVoIP, and for non-acoustic purposes such as ultrasonic sensors or knock sensors.

Several different types of microphone are in use, which employ different methods to convert the air pressure variations of a sound wave to an electrical signal. The most common are the dynamic microphone, which uses a coil of wire suspended in a magnetic field; the condenser microphone, which uses the vibrating diaphragm as a capacitor plate, and the piezoelectric microphone, which uses a crystal of piezoelectric material. Microphones typically need to be connected to a preamplifier before the signal can be recorded or reproduced.

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