History of the microphone!1878- David Edward Hughes: First invented the carbon microphone. (this microphone was developed over the years up until the 1920's)
Carbon is a resistor, meaning it conducts electricity, but not very well. A current runs from one plate through the carbon to the other plate. The carbon molecules normally resist it somewhat, lowering the power flow. When a sound wave pushes down on the top plate, however, it squeezes the carbon molecules more tightly between the two plates. This increases their conductivity, creating more electric current. As the plate moves up and down with the sound wave, the current increases and decreases, creating an electric wave in the shape of the sound wave.
1920's-1942. with the invention of radio, new broadcasting microphones were invented. Drs. Walter H Schottky and Erwin Gerlach co invented ribbon loudspeaker technology, while Dr Harry F Olson began development of ribbon microphones. these mic's set a new standard in frequency response. (a type of dynamic mic.)
1964- James West and Gerhard Sessler create the electroacoustic transducer, an electret microphone. (a type of condenser.) the electret mic offers greater reliability, higher precision and lower cost.
1970's- Dynamic and Condenser microphones were developed and have have formed into what we use today.
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