Democratic Sentinel, Volume 17, Number 33, Rensselaer, Jasper County, 1 September 1893 — Sound Photographed. [ARTICLE]

Sound Photographed.

it is said that Professor Hermann has succeeded in obtaining a photograph of the vowel sounds. He first spoko them into a phonograph, which afterward slowly reproduced them into a delicate micro-telephone. To the vibrating drum of the telephone was fixed a small mirror, from which a single ray of light was reflected to a moving strip of sensitized paper. The vibrations of the drum were thus delicately and accurately pictured on the paper. Sound has thus been actually made to record itself legibly on paper, and it does not appenr to be beyoni the bounds of the possible that a machine may be ultimately invented into which the business man, or author, may speak his thoughts and have them returned to him in clear typewriter copy. Such a maohine is no more impossible than the telephone or phonograph.— (Detroit Free Press. ' • •