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J Korean Soc Laryngol Phoniatr Logop > Volume 16(2); 2005 > Article
Journal of The Korean Society of Laryngology, Phoniatrics and Logopedics 2005;16(2): 140-145.
각종 음성분석기에 따른 음성장애 환자의 주기간 주파수 및 진폭변동률 분석
최성희1, 남도현1, 이승훈2, 정원혁2, 김덕원3, 최홍식1
1연세대학교 의과대학 이비인후과학교실 음성언어의학연구소
2연세대학교 의과대학 의학공학교실
3연세대학교 대학원 생체공학 협동과정
Jitter and Shimmer Measurements of Dysphonia among the Different Voice Analysis Programs
Seong Hee Choi1, Do-Hyun Nam1, Seung-Hoon Lee2, Won-Hyuk Jung2, Deok-Won Kim3, Hong-Shik Choi1
1Department of Otorhinolaryngology, The Institute of Logopedics & Phoniatrics, Yonsei University College of Medicine
2Graduate Program in Biomedical Engineering, Yonsei University
3Department of Medical Engineering, Yonsei University College of Medicine
ABSTRACT
Background and Objectives
: Voice perturbation measures, such as jitter and shimmer has been importantly used for diagnosis and treatment efficacy of laryngeal dysfunction. This study was conducted to investigate validity of newly developed multi-channel voice analyzer program by comparing with MDVP, PRAAT, TF32. In addition, we compared the voice perturbation measures with different voice analyzer program by type of signals.
Materials and Method
s : Nineteen mild-severe dysphonic patients participated in our study. Fundamental frequency, jitter and shimmer values were obtained from different voice analyzer program using the same sustained/ah/phonation.
Results
: Fundamental frequency and shimmer were highly correlated whereas jitter was weakly correlated between newly developed multi-channel voice analyzer program and the others though different pitch computation algorithm except MDVP, In addition, Type 2 and 3 signals were weakly correlated than Type 1.
Conclusion
: In the clinical setting, clinician may have sufficient information of voice analyzer and control conditions properly for severity of pathologic voice before voice perturbation measure to obtain reliable results.
KEY WORDS: Multi-channel voice analyzer;Jitter;Shimmer;Type of signal;
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