Analysis and Comparisons of Acoustical Characteristics of Pathologic Voice before and after Surgery

후두질환에 대한 술전 술후 음성의 음향적 특성비교 분석

  • 김대현 (창원대학교 제어계측공학과) ;
  • 조철우 (창원대학교 제어계측공학과) ;
  • 백무진 (인제대학교 부산백병원 이비인후과) ;
  • 왕수건 (부산대학교 의과대학 이비인후과)
  • Published : 2000.09.01


In this paper the acoustic characteristics of pathological voice, which are measured before and after surgical operation, are compared. This experiment is conducted for the purpose of predicting patients' speech after operation. The voices are recorded from the same patients. Jitter, shimmer and other parameters are. computed and their statistical characteristics are compared. Also spectral changes, such as formant frequency shift and spectral slope change, are compared. From the experimental results, it is verified that not only source characteristics but also vocal tract components vary. And this indicates that the modification of source parameters are not enough for the prediction. Also the result indicates that the operation causes change to both the physical shape of vocal folds and the manner of articulation.