Monsieur Rousselot of Paris has constructed an apparatus in order to investigate the differences between the dialects spoken in certain parts of France and the normal pronunciation of the language. He employs five recording devices, each connected by gutt
Monsieur Rousselot of Paris has constructed an apparatus in order to investigate the differences between the dialects spoken in certain parts of France and the normal pronunciation of the language. He employs five recording devices, each connected by gutta-percha tubes to a needle which inscribes five adjacent wavy lines on the blackened paper of a rotating drum, while a tuning fork, which is kept continuously vibrating by an electric current, draws a sixth wavy line. The speed of rotation can thus be controlled in the most accurate way. The first recording drum. 1/2 inch in diameter, was placed with the diaphragm against one of the side walls of the Adams' apple and it registered the vibrations on the larynx while the subject was speaking. In order to record the movements of the tongue during speech, a second drum was placed with the diaphragm behind the subject's chin secured by a band pressing over the head. There was a separate device for each of the two lips. Its membrane was depressed whenever a highly sensitive lever was displaced by the movement of the lips.
Size: 4200px × 2896px
Photo credit: © Photo Researchers / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: 1895, 19th, age, apparatus, applied, art, artwork, bizarre, book, bw, century, device, drawing, equipment, era, european, french, historic, historical, history, illustration, inscribing, inscription, invention, machine, mechanical, odd, pdc, peculiar, quirky, recording, reproduction, rousselot, science, sound, speech, strange, technological, technology, unusual, victorian, victoriana, wacky, weird
