25 April 2013
Phone pioneer speaks for first time in 128 years
Hi-tech play-back equipment was needed to recover the audio from the wax disc
The voice of Alexander Graham Bell has been identified for the first time, in a recording from 1885.
On the wax-disc recording, the telephone inventor says: "Hear my voice, Alexander Graham Bell."
The recording is among the earliest held by the Smithsonian Institution, which runs the National Museum of American History.
Bell's voice was recorded on to the disc on 15 April 1885 at his Volta laboratory in Washington.