Effects of Helium Gas on the Phonatory Function / 대한이비인후과학회지
Korean Journal of Otolaryngology - Head and Neck Surgery
; : 636-639, 1998.
Article
in Ko
| WPRIM
| ID: wpr-648204
Responsible library:
WPRO
ABSTRACT
BACKGROUND AND OBJECTIVES: The development of saturation diving has enabled men to work underseas at great depths and for long periods of time. However, the utilization of HeO2 gas mixture has been a aubject of much study. This paper present a discussion effect of the helium gas on speech by usling gas machine which have been developed. MATERIALS AND METHODS: Twenty male volunteers without voice problems produced /a/ vowel sound before and after helium gas inhalation. The results were analyzed by using an aerophone, an acoustic analyzer, videostroboscopy, and a nasometer. RESULTS: The first formant, the second formant and the bandwidths of the second formant were significantly increased after helium gas inhalation. A meaningful change was noted in asalance. CONCLUSION: The helium gas has an effect on the resonant structure of oral and nasal cavity due to its physical characteristics.
Key words
Full text:
1
Index:
WPRIM
Main subject:
Voice
/
Volunteers
/
Acoustics
/
Inhalation
/
Diving
/
Helium
/
Nasal Cavity
Limits:
Humans
/
Male
Language:
Ko
Journal:
Korean Journal of Otolaryngology - Head and Neck Surgery
Year:
1998
Type:
Article