Finding:

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   Thomas Edison

   In 1877–1878, Edison invented and developed the carbon microphone used in all telephones along with the Bell receiver until the 1980s. ... ↑ The Thomas A. Edison Papers
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   History of the telephone

   In 1877 and 1878, Edison invented and developed the carbon microphone used in all telephones along with the Bell receiver until the 1980s. ... Thomas Edison's Carbon telephone transmitter greatly improved the telephone
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   Carbon microphone

   Edison's invention of the carbon (graphite) microphone by Frank Dyer ... Thomas Edison
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   Edisonian approach

   For example, in developing the carbon microphone (or carbon grain transmitter) that became the basis of telephones of the next hundred years, Edison and his co-workers tried hundreds of substances, finally settling on lamp black as the variable resistance medium. ... Edison invented by repeatedly trying devices in more complex environments to progressively approximate their final use conditions.
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   David E. Hughes

   He also invented an improved microphone, which was a modification of Thomas Edison's carbon telephone transmitter.
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   Reis telephone

   In 1862, Reis demonstrated his telephone to Wilhelm von Legat, Inspector of the Royal Prussian Telegraph Corps who produced an account of this (Legat, 1862), a translation of which came to Thomas Edison in 1875 and was used in Edison's successful development of the carbon microphone. ... The first practical commercial telephone for transmission of articulate speech was invented by myself.
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   Dictation machine

   Shortly after Thomas Edison invented the phonograph, the first device for recording sound, in 1877, he thought that the main use for the new device would be for recording speech in business settings.
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   Phonograph

   Many audiophiles believe that all-analogue recordings made using a traditional tape recorder, simple microphone arrays and few overdubs have a more natural sound than digital recordings. ... Thomas Edison
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   Disc jockey

   Optionally, a microphone, so that the DJ can introduce songs and speak to the audience. ... In 1877, Charles Cros invented the phonograph in France (it was patented before Edison's invention but never built) and Thomas Alva Edison invented the phonograph cylinder, the first device to play back recorded sound, in the United States.
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    Timeline of the telephone

    4 March 1877 Emile Berliner invents a microphone based on "loose contact" between two metal electrodes, an improvement on the Reis telephone, and in April 1877 files a caveat of an invention in process. ... ↑ Edison, Thomas A. 1880.

Explore the following pages on Powerset:

• Thomas Edison,
• History of the telephone,
• Carbon microphone,
• Edisonian approach,
• David E. Hughes,
• Reis telephone,
• Dictation machine,
• Phonograph,
• Disc jockey,
• Timeline of the telephone