title: [Vowel selection effects on the parameters of acoustic analysis].
abstract: OBJECTIVE
  To investigate if there is difference about the parameters of acoustic analysis with the different vowel |a|, |i|, |ae| and decide which vowels is best fitted to the acoustic analysis.
  
  
  METHODS
  40 normal and 130 pathologic voice patients accepted acoustic analysis. Each acoustic parameters such as jitter, shimmer, NNE, SDF0, SNR were compared with different vowels.
  
  
  RESULTS
  Jitter, shimmer, NNE with |i| were much lower than that with |a| and |ae| in normal cases and light hoarseness group. While the acoustic parameters with |i| were much higher than that with |a| and |ae| in moderate and heavy hoarseness group.
  
  
  CONCLUSIONS
  |a| and |ae| were the preferred vowels for normal and light hoarseness group, while the |i| could supply some useful suggestion for the moderate and heavy hoarse patients.
authors.affiliation: Department of Otolaryngology Head and Neck Surgery, Renmin Hospital of Wuhan University, Wuhan 430060.
authors.forename: Q
authors.initials: Q
authors.lastname: Cai
authors.forename: Z
authors.initials: Z
authors.lastname: Tao
authors.forename: Q
authors.initials: Q
authors.lastname: Yang
mesh_terms: D000293:Adolescent; D000328:Adult; D005260:Female; D006685:Hoarseness / Q000503:physiopathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D013061:Speech Acoustics; D014831:Voice / Q000502:physiology; D014833:Voice Quality