SPEECH INTELLIGIBILITY DURING PROLONGED EXPOSURE TO HELIUM-OXYGEN.
Abstract
Changes in the intelligibility of speech during six days of breathing a mixture of helium and oxygen were investigated. Speech was sampled before breathing the mixture, and on the second, fourth and sixth days of exposure in a chamber containing 21% oxygen and 79% helium. There was a deterioration in intelligibility on the second day which was not observable thereafter. A return to more natural speech also occurred by the fourth and sixth days. It is suggested that a talker attains a more normal quality and intelligibility to his speech after becoming accustomed to several days exposure to the helium-oxygen mixture described. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 13, 1963
- Accession Number
- AD0602545
Entities
People
- J. Donald Harris