title: [Effect of age and gender to voice quality].
abstract: OBJECTIVE
  To investigate the influence of age and gender on the parameters of voice, in order to make baseline data for the diagnosis and therapy of voice disorders.
  
  
  METHODS
  One hundred and thirty two normal subjects were randomly selected in Shanghai, which were divided into two groups: one aged 18-40 and another aged 60-90. Each group included 33 male subjects and 33 female subjects. All subjects were assessed by VA (Tiger DRS. Inc), selected parameters including: F0, Jitter, Shimmer, NNE, CQ.
  
  
  RESULTS
  The factors of age and gender had the significant difference on voice, and there were interaction between age and gender. Sensitive parameters are F0, Jitter, NNE, CQ.
  
  
  CONCLUSIONS
  There are some characteristic change of voice associated with aging. There is vast difference between aging male and aging female. Furthermore, aging voice can be improved by voice training.
authors.affiliation: College of Preschool and Special Education in East China Normal University, Shanghai, 200062, China. wanping2007@hotmail.com
authors.forename: Ping
authors.initials: P
authors.lastname: Wan
authors.forename: Zhaoming
authors.initials: Z
authors.lastname: Huang
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012737:Sex Factors; D013061:Speech Acoustics; D014833:Voice Quality / Q000502:physiology*; D055815:Young Adult