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A direct recording of Alexander Graham Bell's voice - Filtered Version
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A direct recording of Alexander Graham Bell's voice - Filtered Version
  • Published_at:2013-04-25
  • Category:Science & Technology
  • Channel:E Cornell
  • Ranked in: USA
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  • description: See http://www.youtube.com/watch?v=qTpWD28Vcq0 for a YouTube video displaying the original notes From the Smithsonian Institution National Museum of American History (SI NMAH) Volta Laboratory collection. Optical scanning is a process to restore...
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