title: [Analysis on voice acoustic parameters and electroglottographic parameters in normal children of Han, Naxi, Bai nationality].
abstract: OBJECTIVE
  To explore the normal vocal acoustic parameters and electroglottographic (EGG) parameters and their differences in normal children of the Han, the Naxi, the Bai nationality.
  
  
  METHODS
  By using computer and Dr. speech software, We studied six parameters of voice acoustic and the E.G.G. in 951 children (Han 342, Naxi 224, Bai 385), aged 4-8 years old. We also examined 30 cases who suffered from vocal nodule and local proliferation.
  
  
  RESULTS
  The major parameters 1. Jitter, 2. Shimmer, 3. Mean F0, 4. SD F0, 5. NNE) of the voice acoustic and E.G.G. of the three nationality.
  
  
  CONCLUSIONS
  1. All parameters in Han nationality school-age children and preschool children were not different in years old. But Naxi and Bai nationality school-age children's Mean F0 and SD F0 were different from preschool children. The parameters(Mean F0, SD F0) of school-age children in Han, Naxi and Bai nationality were significant different. 2. The tested parameters were significant different between normal children of the Han nationality and the vocal nodule patients.
authors.affiliation: Department of Otolaryngology, Children Hospital, Kunming 650034.
authors.forename: S Q
authors.initials: SQ
authors.lastname: Zhao
authors.forename: T S
authors.initials: TS
authors.lastname: Zhang
authors.forename: J Y
authors.initials: JY
authors.lastname: Lin
authors.forename: L J
authors.initials: LJ
authors.lastname: Zhou
authors.forename: R Q
authors.initials: RQ
authors.lastname: Liu
mesh_terms: D002648:Child; D002675:Child, Preschool; D002681:China / Q000208:ethnology; D004576:Electromyography / Q000379:methods; D005260:Female; D005931:Glottis / Q000502:physiology; D006801:Humans; D008297:Male; D012016:Reference Values; D013061:Speech Acoustics; D014831:Voice / Q000502:physiology*