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  Emile Berliner invented the first microphone used as a voice transmitter.
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  Gerhard M. Sessler invented the coil microphone.
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  Gehard Sessler later invented the Sillicoin Microphone, in 1963
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  The Yeti is the most current microphone. It has clear sound and is wireless.
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  We invented a microphone that you can record your voice in and then play it and make your voice have a different tone.