The microphone transducer can include an electret microphone, a capacitor microphone, a carbon microphone, a conductive fluid microphone or a dynamic microphone.
The carbon microphone was the earliest type of microphone.
To modulate this transmitter he inserted a carbon microphone in series with the supply lead.
In 1879, the Bell company acquired Edison's patents for the carbon microphone from Western Union.
In , the Bell company acquired Edison's patents for the carbon microphone from Western Union.
In 1879 , Bell’s company acquired the Edison patents for the Western Union Coal Microphone .
In 1877, Thomas Edison developed a system of recording on cylinders with a stylus, as well as a carbon microphone.
In 1877, Emile Berliner received patents for his carbon microphone, the use in telephony of the principle of loose contacts and the induction coil.
Requêtes fréquentes français :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
Requêtes fréquentes anglais :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
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