Unlike Edison's later invention of 1877, the phonograph, the phonautograph only created visual images of the sound and did not have the ability to play back its recordings.
22.
Acta Psychologica, 30, 412-431 . ) These are clear black and white photo reproductions of words and phrases recorded by Donders with a phonautograph while doing reaction time experiments.
23.
In 2008, phonautograph recordings made by Scott were played back as sound by American audio historians, who used optical scanning and computer processing to convert the traced waveforms into digital audio files.
24.
An inventor from America soon eclipsed this idea, and it was not until 1887 that yet another inventor, Emile Berliner, actually photoengraved a phonautograph recording into metal and played it back.
25.
Ideally, the phonautograph would be modelled and its resonant frequencies and distortions " subtracted out " in the reproduction, but it would be cool to hear at least a raw playback of the tracings.
26.
Scott built the phonautograph whcih had all the elements needed to record sound : a diaphragm to respond to sound waves, a stylus to record them, and a smoked glass plate to receive the tracing.
27.
Asmoked cilinder was used in 19th century reaction time experiments, as by Donders, and in pre-phonograph sound recordings, as the Phonautograph . talk ) 01 : 26, 16 June 2009 ( UTC)
28.
As Professor of Vocal Physiology at Boston University, Bell was engaged in training teachers in the art of instructing deaf mutes how to speak, and experimented with the Leon Scott phonautograph in recording the vibrations of speech.
29.
Cros proposed the use of photoengraving, a process already in use to make metal printing plates from line drawings, to convert an insubstantial phonautograph tracing in soot into a groove or ridge on a metal disc or cylinder.
30.
If historical anecdotes are accurate, he made a tracing of President Lincoln's voice with his newly invented " phonautograph, " a machine that scratched sound patterns onto a soot-blackened sheet of paper wrapped around a drum.
