A previous paper1 has suggested the value of study of the stutterer's voice and speech by means of the photographic method. It also indicated the desirability of contrasting objective records of different kinds of speech, such as emotional and unemotional, repetitive and propositional and the several combinations of these varieties. In this paper, I shall report a study of emotional and unemotional repetitive speech and unemotional propositional speech. On several occasions, the voice and the breath stream were photographed during the act of stuttering, and these records furnished interesting additional data for study.
Methods of photographing the voice have been well worked out in the Psychology Laboratory of the University of Iowa and are fully reported by Herzberg,2 Kwahlwasser,3 Simon4 and Metfessel.5 Briefly, Dorsey phonelescopes are used as optical levers for recording both the sound waves of the voice and the 100 double vibration tuning
TRAVIS LE. STUDIES IN STUTTERINGII. PHOTOGRAPHIC STUDIES OF THE VOICE IN STUTTERING. Arch NeurPsych. 1927;18(6):998-1014. doi:10.1001/archneurpsyc.1927.02210060133004