Abstract
MR. THOMAS A. EDISON has recently invented an instrument which is undoubtedly the acoustic marvel of the century. It is called the “Speaking Phonograph,” or, adopting the Indian idiom, one may aptly call it “The Sound-Writer who Talks”. Much curiosity has been expressed as to the workings of this instrument, so I purpose giving an account of it.
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MAYER, A. Edison's Talking-Machine1. Nature 17, 469–471 (1878). https://doi.org/10.1038/017469b0
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DOI: https://doi.org/10.1038/017469b0