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A microphone, colloquially nicknamed mic or mike (/ËmaÉªk/), is a transducer that converts sound into an electrical signal.
The cost of a microphone (also known as a mic or mike) varies according to the intended use. Microphones can be used for podcasting, voice recording, karaoke singing, live broadcasts or with Voice Over Internet Protocol (VOIP) applications (see How Much Does Internet Phone Service Cost).