title: [The influences of vowel ae and a: on acoustic measures].
abstract: OBJECTIVE
  To study the influences of vowel ae and a: on acoustics measures.
  
  
  METHODS
  Fifty-three cases of laryngeal diseases were measured acoustically. The acoustic sampling were vowels ae and a:.
  
  
  RESULTS
  The results showed that Fo, Jitter and Shimmer were similar between two groups, and NNE of vowel a: was much lower than that of ae, indicating larger glottal closure in vowel a:.
  
  
  CONCLUSIONS
  Vowels have something to do with glottal closure, therefore influencs acoustical measures.
authors.affiliation: Department of Otolaryngology, EENT Hospital, Shanghai Medical University, Shanghai 200031.
authors.forename: C
authors.initials: C
authors.lastname: Wei
authors.forename: F
authors.initials: F
authors.lastname: Chen
authors.forename: W
authors.initials: W
authors.lastname: Wang
mesh_terms: D000162:Acoustics; D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D005260:Female; D006801:Humans; D007818:Laryngeal Diseases / Q000503:physiopathology*; D008297:Male; D008875:Middle Aged; D010700:Phonetics