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KMID : 1022420140060030049
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Phonetics and Speech Sciences
2014 Volume.6 No. 3 p.49 ~ p.56
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Characteristics of respiration and phonation depending on smoking or non smoking by practical musicology students and general male students
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Kim Eun-Hye
Choi Hong-Shik
Lim Sung-Eun
Choi Yae-Lin
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Abstract
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This research compared the features of respiration and phonation between practical musicology students and generalmale students, according to their smoking status. Participants of this research are 15 practical musicology male studentsattending ○○ university and 16 general ○○○ university students. The participants, both non-smokers and smokers with5-years of smoking history have no history of voice disease in any case and have normal cognitive functions. The resultsindicated that, first, there is not a notable difference in the respiratory activity status(FVC, FEV1, FEV1/FVC), regardless ofmajor and smoking status. In MPT, even though there is no significant difference in accordance with their majors,considering smoking status, the smoker group was shorter than non-smoker group significant difference statistically (p<.01). Second, the divisions of participants’ major did not show significant difference in Fo, jitter, shimmer, and NHR in thevowel prolongation task. However, the smoker group showed a significantly higher degree of jitter and shimmer than thenon-smoker group (p<.05) as Fo and NHR shows no difference. In the case of VRP, maximum frequency and frequencyrange of the practical group are significantly higher than normal group statistically (p<.001). Moreover, although thedifference of the minimum frequency shown at the statistic is not significant, practical group showed a higher tendency offrequency than normal group (p=.051). In conclusion, even though there is no difference in respiratory activity between thesmoker group and non-smoker group, the MPT of the smoker group is shorter than that of non-smoker group. In addition,the smoker group showed a higher degree of jitter and shimmer than the non-smoker group. MPT is related to the valveaction of vocal fold that passes through the glottis. Thus, it is interpreted that the smoker group has a lower quality ofvoice and valve action of the vocal fold. Also, the practical group has a higher degree of maximum frequency andfrequency range than the normal group. This research can function as basic data for vocal characteristics for the majors inrelation to the voice-specializing.
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KEYWORD
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acoustic characteristic, Maximum phonation time, respiratory, Voice range profile, practical musicology, smoking
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