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Sound Recording. We need to backtrack a bit to understand sound recording. Leon Scott de Martinville - phonautograph - 1857. Attached a bristle to a membrane at the end of a cone, set the bristle to touch a piece of smoked glass Spoke into the cone
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Leon Scott de Martinville - phonautograph - 1857 • Attached a bristle to a membrane at the end of a cone, set the bristle to touch a piece of smoked glass • Spoke into the cone • membrane vibrated to the sound and the bristle etched a wavy line onto the smoked glass
Spring of 2009 scientists were able to get sound from one of de Martinville’s paper phonautographs – a woman singing for 10 seconds