Rousselot's Speech Inscription Apparatus, 1895

Numéro d’image : 12631479
Rousselot's Speech Inscription Apparatus, 1895
Monsieur Rousselot of Paris has constructed an apparatus in order to investigate the differences between the dialects and the normal pronunciation of the language. Five recording devices, each connected by gutta-percha tubes to a needle which inscribes five adjacent 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 line. 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
Licence : Droits gérés
Crédit: Science Photo Library / Science Source
Taille de l’image : 4200 px × 2896 px
Model Release : Non requis
Property Release : Non requis
Restrictions : -

Prix pour cette image À partir de 45 €

Produit vendu
(Calendrier, Carte postale, Carte de vœux, Impression sur textile, Packaging etc)
À partir de 45 €
Usage commercial
(Affichage, Annonce presse, Annonce TV, Carte, Digital - hors rés. sociaux, Digital - rés. sociaux etc)
À partir de 45 €
Éditorial
(Digital, Journal, Livre, Livre pratique, Magazine, Télévision etc)
À partir de 60 €
Usage non-commercial
(Digital - hors rés. sociaux, Digital - rés. sociaux etc)
À partir de 120 €

Mots clés

;