TERMIUM Plus®

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MICROPHONE VARIATION RESISTANCE [1 record]

Record 1 1983-10-12

English

Subject field(s)
  • Audio Technology
  • Telephones
OBS

A transducer which uses voice sound pressure on a diaphragm to compress carbon granules between electrodes. The resulting resistance variation modulates a battery current flowing between the electrodes, thus translating the acoustic message into an analog electrical signal. (SMICO, 71: 433) As Mrs. Smith talks into her handset, the minute variations in air pressure caused by her voice result in resistance fluctuations in the carbon transmitter. (ENBELL, 80: 36)

French

Domaine(s)
  • Électroacoustique
  • Téléphones
OBS

Microphone à l'intérieur duquel le déplacement de la membrane provoque des variations de la valeur d'une résistance prise entre deux électrodes. (DELTE 1, 75: 8) A ce jour, en téléphonie, les microphones le plus généralement utilisés, sont les microphones à variation de résistance décrits ci-dessous (microphones à charbon), dont les qualités essentielles sont la robustesse, le faible prix et l'aptitude à fournir, pour des variations d'amplitude déterminées, les tensions microphoniques les plus élevées. (DELTE, 1, 75: 9)

Spanish

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