VM 100- Final Exam Guide - Comprehensive Notes for the exam ( 120 pages long!)
1 Dec 2017
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Self educated, worked from teen years as telegraph operator. Nj in 1870s. and invented improvements on the telegraph. Received many patents in telegraphy and built his (cid:498)invention factory(cid:499) at menlo park, )nvented his (cid:498)talking machine(cid:499) or recording device in 1877 using tin cylinders and a needle. 1857 - scott de martinville created a device to record sound for the very first time. His phonautograph mimicked the structure of the human ear to scratch wavy lines onto paper that had been blackened by the soot of an oil lamp. These first known recordings of the human voice were never actually heard until. 2007 when scans of these images were sent to the university of california"s. Lawrence berkeley lab where they were converted into sound by the scientists carl. Edison did not utilize recording to record music initially, instead using it as a device for business to take dictation for secretaries.
