Despite the fact his inventions like the telephone have helped billions of people hear other voices (and record voices and sounds) no one knew what Alexander Graham Bell's own voice sounded like (apart from people who knew him at the time of course).
One of the earliest wax disc recordings from 1885, which comes complete with a written transcript by Bell, has been scanned using a non-invasive optical sound recovery process and the audio extracted by calculating how a stylus would move through the grooves of the disk. So here it is, one of the earliest audio recordings.
