Carbon Microphone

Japanese: カーボンマイクロホン
Carbon Microphone
A carbon microphone is a type of microphone that uses the change in contact resistance of carbon particles caused by sound pressure. It is used in telephone transmitters.

Source: The Selected Edition of the Japanese Language Dictionary About the Selected Edition of the Japanese Language Dictionary Information

Japanese:
〘名〙 (carbon microphone) 音圧による炭素粒の接触抵抗の変化を利用したマイクロホン。電話の送話器に用いられる。

出典 精選版 日本国語大辞典精選版 日本国語大辞典について 情報

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