Phonetics and Speech Sciences (말소리와 음성과학)

Korean Society of Speech Sciences (한국음성학회)
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Comparisons of voice quality parameter values measured with MDVP, Praat, and TF32

MDVP, Praat, TF32에 따른 음향학적 측정치에 대한 비교

  • Ko, Hye-Ju (Department of Psychological Rehabilitation, Myongji University) ;
  • Woo, Mee-Ryung (Rehabilitation Medical Center, National Health Insurance Corporation Ilsan Hospital) ;
  • Choi, Yaelin (Department of Psychological Rehabilitation & Speech-Language Pathology, Myongji University)
  • 고혜주 (명지대학교 심리재활학학과간협동과정) ;
  • 우미령 (국민건강보험 일산병원 재활치료센터) ;
  • 최예린 (명지대학교 심리재활학학과간협동과정 & 언어치료학과)
  • Received : 2020.06.05
  • Accepted : 2020.09.14
  • Published : 2020.09.30
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Abstract

Measured values may differ between Multi-Dimensional Voice Program (MDVP), Praat, and Time-Frequency Analysis software (TF32), all of which are widely used in voice quality analysis, due to differences in the algorithms used in each analyzer. Therefore, this study aimed to compare the values of parameters of normal voice measured with each analyzer. After tokens of the vowel sound /a/ were collected from 35 normal adult subjects (19 male and 16 female), they were analyzed with MDVP, Praat, and TF32. The mean values obtained from Praat for jitter variables (J local, J abs, J rap, and J ppq), shimmer variables (S local, S dB, and S apq), and noise-to-harmonics ratio (NHR) were significantly lower than those from MDVP in both males and females (p<.01). The mean values of J local, J abs, and S local were significantly lower in the order MDVP, Praat, and TF32 in both genders. In conclusion, the measured values differed across voice analyzers due to the differences in the algorithms each analyzer uses. Therefore, it is important for clinicians to analyze pathologic voice after understanding the normal criteria used by each analyzer when they use a voice analyzer in clinical practice.

음질 분석에 매우 유용한 Multi-Dimensional Voice Program (MDVP), Praat, Time-Frequency Analysis software (TF32)는 각각의 음향학적 검사에 사용된 알고리즘 차이로 인해 그 측정치에 차이가 있을 수 있다. 그러므로 본 연구에서는 각각의 음향학적 검사 도구로 음성 측정치를 비교 분석하여 분석 도구에 따른 음향학적 검사 변수의 차이를 살펴보고자 하였다. 정상 성인 총 35명 (남성 19명, 여성 16명)을 대상으로 모음 /아/를 수집한 후, 동일한 음성을 MDVP, Praat, TF32 각각의 음향학적 검사 도구로 분석하였다. 그 결과 jitter 변수(J local, J abs, J rap, J ppq), shimmer 변수(S local, S dB, S apq), noise-to-harmonics ratio (NHR) 평균의 경우, 남성과 여성 모두 MDVP보다 Praat의 수치가 통계적으로 유의하게 낮았다(p<.01). 또한 J local, J abs, S local 평균의 경우, 남성과 여성 모두 MDVP, Praat, TF32 순으로 통계적으로 유의하게 낮아졌다. 결론적으로 각 음향학적 검사 도구에 사용된 알고리즘 차이로 인해 도구 간의 측정치에 차이가 있었다. 그러므로 임상가들이 임상현장에서 각각의 음향학적 검사 도구를 사용할 때 각 도구의 알고리즘에 대해 이해한 후 병적 음성을 분석하는 것이 중요할 것이다.

Keywords

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