Acoustic Characteristics of the Vocal Major Students with Vocal Nodule

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J Korean Soc Laryngol Phoniatr Logop > Volume 10(2); 1999 > Article

Journal of The Korean Society of Laryngology, Phoniatrics and Logopedics 1999;10(2): 135-139.

성대결절이 있는 성악도에서의 음성분석학적 특징

진성민, 김대영, 김남훈, 권기환, 이경철, 이용배

성균관대학교 의과대학 강북삼성병원 이비인후과학교실

Acoustic Characteristics of the Vocal Major Students with Vocal Nodule

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ABSTRACT

Objectives : The purpose of this study was to systematically analyze and compare the acoustic characteristics of vocal major students with vocal nodule when singing.
Materials and Method
s : Ten sopranos with vocal nodule, who have never been treated due to voice problems, were the subject group. Twenty healthy sopranos major students were the control group for this study. The vocal nodule was confirmed by stroboscopy and the acoustic and electroglottographic analysis was conducted on be groups. Additionally, an inquiry on usual voice problems during speaking and singing were performed on each of the groups.
Results
: The vowel /a/ was spoken and sung by sopranos of each group. There were no significant differences in Fo, jitter, shimmer, NHR at speaking and singing in either group. We did not register any significant differences of closed quotient and speed quotient in electroglottography for both groups at singing, but speed quotient was increased in subject group at speaking(p＜0.05). And the sopranos with nodule demonstrated voice fatigue(70%), strained and tired voice after long period of performance and conversation(60%) on inquiry.
Conclusion
s : Although they had a vocal nodule, this group, who had a long period of voice training, did not present any differences in acoustic and electroglottographic problems during short performance, but, the vocalists noticed delicate voice problems after a long performance. We conclude that the voice training teacher and laryngologist must initiate voice management and speech therapy for vocal nodule, even if there is no specific abnormality in acoustic analysis.

KEY WORDS： Vocal major student;Vocal nodule;Acoustic analysis;Electroglottography;