title: [The study on the standardization of adults voice acoustic parameters by objective analysis].
abstract: OBJECTIVE
  To explore the characteristic of normal voice in different age-bracket of Chinese adults and to formulate the normal reference value suited to our country at voice assessment.
  
  
  METHODS
  We divided the adults into the youth, the middle-aged and the old groups, and analyzed normal voice samples with Dr. Speech software and computer multimedia technique and compared the following 5 parameters (Jitter, Shimmer, NNE, Fo and SDFo) of different groups divided according to one's age, sex and vowel.
  
  
  RESULTS
  There is difference among the group of age, sex and vowel in most acoustic parameters in the adults.
  
  
  CONCLUSIONS
  To initiate taking multi-vowels samples and using different normal reference value and multi-parameters analysis according to the difference of age-bracket, sex and vowel in the adults.
authors.affiliation: Department of Otolaryngology, 5th People's Hospital, Shanghai 200240.
authors.forename: K
authors.initials: K
authors.lastname: Lei
authors.forename: X
authors.initials: X
authors.lastname: Yang
authors.forename: J Z
authors.initials: JZ
authors.lastname: Shen
authors.forename: J R
authors.initials: JR
authors.lastname: Gong
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010700:Phonetics; D012016:Reference Values; D012737:Sex Factors; D013061:Speech Acoustics