Edison recently came into this office, placed a little machine on our desk, turned a crank, and the machine inquired as to our health, asked how we liked the phonograph, informed us that it was very well, and bid us a cordial good night.
The patent awarded to Edison on February 19, , specified a particular method—embossing—for capturing sound on tin-foil-covered cylinders. His newly established Bell Labs developed a phonograph based on the engraving of a wax cylinder, a significant improvement that led directly to the successful commercialization of recorded music in the s and lent a vocabulary to the recording business—e.
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In the summer of , in the midst of a Western-bound fever sweeping the United States, The sound vibrations would go through the needle and make a line, or groove, into the tin-foil. A needle on the other side could play back what you had just recorded. After just a few plays, the tin-foil would tear up and the message could no longer be played. That is why the tin-foil recordings cannot be played anymore. Later phonographs played records.
The first ones were in the shape of a cylinder, with the music on the outside. Later records were shaped like discs, or large CDs. Edison loved the phonograph so much that he called it his "baby".
He improved it over and over for the next fifty years. Directly above: Edison's cylinder tinfoil phonograph of In hindsight today, one might assume that Edison's idea came to the inventor fully-formed. The phonograph could, in fact, have taken any number of forms. He always claimed that the inspirations that eventually distilled into this singular invention evolved from his efforts to improve on Alexander Graham Bell's telephone of Obvious similarities between the phonautograph and the phonograph raise the questions: Did Edison set out to improve upon Scott's phonautograph?
Was he explicitly building on this existing technology, or did he come to the idea of sound recording independently? Primary sources are silent on whether Edison even knew of the phonautograph in Published first in German in , the book contains Helmholtz's analysis of music and acoustics.
Had he been working to improve the phonautograph rather than the telephone, he would certainly have travelled a much different path. JULY — Edison conceives of the phonograph. Indeed, the first page exists only in facsimile.
Note how the dates differ—a result of Edison and his associates gathering loose sheets from the lab and signing them in batches. Only in did researcher Patrick Feaster realize the two pages went together. In this way, ready online access to The Thomas A. Edison's "strip" design, first attempted in July , as illustrated in Scientific American magazine, August 24,
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