MIAMI. – The voice human was recorded by the American inventor Thomas Alva Edison. This researcher is the creator of the phonograph and the recording of the recording dates back to December of 1877.
The phonograph was the first most common device for recording and reproducing sounds from the 1870s to the 1880s.
Subsequent to Edinson’s invention it was called the gramophone, this as a registered trademark from 1887 and as a generic name in the United Kingdom from 1910. From the 1940s it was known as a record player.
The operation of the Edinson phonograph is explained as follows: Sound vibration waveforms are recorded as the physical deviations of a spiral groove etched or printed on the surface of a cylinder or disco rotary which is called a register. Hence, to recreate the sound, the surface is similarly rotated, while a playback stylus traces the groove and vibrates, reproducing the recorded sound.
Thomas Alva Edinson began his career as an inventor in New Jersey, USAwith creations such as the automatic repeater and other improved telegraphic devices, but the invention that gained greatest notoriety was the phonograph in 1877. The researcher was known as “The Wizard of Menlo Park.”
The voice record brought fame
With the phonograph, fame came to Edinson. In this sense, Joseph Henry, president of the National Academy of Sciences and one of the most renowned scientists in the world, USA, He described Thomas Alva Edison as “the most ingenious inventor in this country… or any other.” In 1878, the researcher traveled to Washington to demonstrate the phonograph before the National Academy of Sciences, congressmen, senators, and President Rutherford Birchard Hayes.
Although Edison obtained a patent for the phonograph, it was Alexander Graham Bell, Chichester Bell and Charles Tainter who produced a device similar to a phonograph in the 1880s. This device used wax-coated cardboard cylinders.
The legacy of Thomas Alva Edinson, originally from Ohio, is present in several inventions: from electrical energy to music.
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FUENTE: Portal Da Internacional / National Geographic/ Academia Lab
