Cepstral and spectral analysis of voices with adductor spasmodic dysphonia

내전형연축성 발성장애 음성에 대한 켑스트럼과 스펙트럼 분석

Shim, Hee Jeong;Jung, Hun;Lee, Sue Ann;Choi, Byung Heun;Heo, Jeong Hwa;Ko, Do-Heung

  • Received : 2016.05.18
  • Accepted : 2016.06.10
  • Published : 2016.06.30


The purpose of this study was to analyze perceptual and spectral/cepstral measurements in patients with adductor spasmodic dysphonia(ADSD). Sixty participants with gender and age matched individuals(30 ADSD and 30 controls) were recorded in reading a sentence and sustained the vowel /a/. Acoustic data were analyzed acoustically by measuring CPP, L/H ratio, mean CPP F0 and CSID, and auditory-perceptual ratings were measured using GRBAS. The main results can be summarized as below: (a) the CSID for the connected speech was significantly higher than for the sustained vowel (b) the G, R and S for the connected speech were significantly higher than for the sustained vowel (c) Spectral/cepstral parameters were significantly correlated with the perceptual parameters, and (d) the ROC analysis showed that the threshold of 13.491 for the CSID achieved a good classification for ADSD, with 86.7% sensitivity and 96.7% specificity. Spectral and cepstral analysis for the connected speech is especially meaningful on cases where perceptual analysis and clinical evaluation alone are insufficient.


spasmodic dysphonia;cepstrum;spectrum;CPP;L/H ratio;mean CPP F0;CSID;GRBAS


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