Alexander Graham Bell and his Volta Laboratory Ass... ...s Volta Laboratory Associates began research into recording sound in the early 1880s. They tried a variety of... ...sound in the early 1880s. They tried a variety of recording mediums, such as glass, wax, rubber, and metal. T... ...without scratching th...
https://www.neatorama.com/2011/12/29/130-year-old-sound-recordings/
130-year-old Sound Recordings
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