Effects of Helium Gas on the Phonatory Function.
- Author:
Sung Min JIN
1
;
Dae Young KIM
;
Jae Ho BAN
;
Kyung Chul LEE
;
Yong Bae LEE
Author Information
1. Department of Otolaryngology, Kangbuk Samsung Hospital, College of Medicine, Sungkyunkwan University, Seoul, Korea.
- Publication Type:Original Article
- Keywords:
Helium gas;
Speech
- MeSH:
Acoustics;
Diving;
Helium*;
Humans;
Inhalation;
Male;
Nasal Cavity;
Voice;
Volunteers
- From:Korean Journal of Otolaryngology - Head and Neck Surgery
1998;41(5):636-639
- CountryRepublic of Korea
- Language:Korean
-
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.
