Microphone
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A microphone, colloquially called a mic, or mike, is a transducer that converts sound into an electrical signal. Microphones are used in telecommunication, sound recording, broadcasting, and consumer
Shure Brothers microphone, model 55S, multi-impedance "Small Unidyne" dynamic from 1951
David Edward Hughes invented a carbon microphone in the 1870s.
Humphrey Bogart, Jack Brown, and Lauren Bacall with RCA Varacoustic MI-6203 ribbon microphones broadcast to troops overseas during World War II.
A modern version of the Shure SM57 dynamic microphone
Carbon microphone
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The carbon microphone, also known as carbon button microphone, button microphone, or carbon transmitter, is a type of microphone, a transducer that converts sound to an electrical audio signal. It con
Carbon microphone from Western Electric telephone handset, around 1976.
A disassembled Ericsson carbon microphone with carbon particles visible
Hughes carbon microphone