title: Electroglottography of speakers of Brazilian Portuguese through Objective Multiparameter Vocal Assessment (EVA).
abstract: EVA was designed to study various speech production parameters.
  
  
  OBJECTIVE
  This paper aims to define the mean values for electroglottography tests of Brazilian Portuguese speakers on EVA.
  
  
  METHODS
  The voices of 20 men and 20 women without voice-related complaints were analyzed through electroglottography so as to obtain reference values for normality.
  
  
  METHODS
  this is a descriptive cross-sectional study.
  
  
  RESULTS
  The mean values for normal male voices were: F0 = 127.77 Hz; F0 coefficient of variation = 2.51%; absolute jitter = 1.707 Hz; relative average perturbation = 0.0083; jitter factor = 1.34%; jitter ratio = 13.45%; QF = 0.447. The values for female voices were: F0 = 204.87 Hz; F0 coefficient of variation = 1.58%; absolute jitter = 3.30Hz; relative average perturbation = 0.0102; jitter factor = 1.60%; jitter ratio = 16.23%; QF= 0.443. Wave type for the entire sample was categorized as tilted pulse.
  
  
  CONCLUSIONS
  Statistically significant differences were found for gender on parameters average FO and absolute jitter. While using acoustic analysis software, users must be based on parameters inherent to the software program when analyzing the collected data.
authors.affiliation: Faculdade de Letras, Universidade Federal de Minas Gerais. 　babisfaria@yahoo.com.br
authors.forename: Bárbara Silveira de
authors.initials: BS
authors.lastname: Faria
authors.forename: Karina Vitor de
authors.initials: KV
authors.lastname: Oliveira
authors.forename: Juliana Preisser Godoy e
authors.initials: JP
authors.lastname: Silva
authors.forename: César
authors.initials: C
authors.lastname: Reis
authors.forename: Alain
authors.initials: A
authors.lastname: Ghio
authors.forename: Ana Cristina Côrtes
authors.initials: AC
authors.lastname: Gama
mesh_terms: D000293:Adolescent; D000328:Adult; D001938:Brazil; D015331:Cohort Studies; D003430:Cross-Sectional Studies; D005260:Female; D005931:Glottis / Q000502:physiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D012016:Reference Values; D013018:Sound Spectrography / Q000295:instrumentation* / Q000379:methods; D014833:Voice Quality / Q000502:physiology*; D055815:Young Adult