Alexander Graham Bell : Smithsonian researchers used optical technology to play back the unplayable records

Audio of the famous inventor speaking was discovered on June 20, 2012.

Today, however, a dramatic application of digital technology has allowed researchers to recover Bell’s voice from a recording held by the Smithsonian—a breakthrough announced here for the first time.

Read more: http://www.smithsonianmag.com/history-archaeology/We-Had-No-Idea-What-Alexander-Graham-Bell-Sounded-Like-Until-Now-204137471.html#ixzz2UPYbfojZ
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