SciELO - Scientific Electronic Library Online

vol.12 issue4Support and singing voice: perspective of singing teachers and speech language pathologistsEfficacy of two techniques of speech-language pathologists of facial esthetic in the orbicular oculi muscle: a pilot study author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




Related links


Revista CEFAC

Print version ISSN 1516-1846


VIEGAS, Flávia; VIEGAS, Danieli; ATHERINO, Ciríaco Cristovão Tavares  and  BAECK, Heidi Elisabeth. Fundamental frequency of seven oral vowels of Portuguese in children voices. Rev. CEFAC [online]. 2010, vol.12, n.4, pp.563-570.  Epub Aug 20, 2010. ISSN 1516-1846.

PURPOSE: to investigate fundamental frequency of the 7 oral vowels of Brazilian Portuguese on voices of healthy children between four and eight year old. METHODS: two hundred and seven children of both genders were select by speech tasks and by a voice auditory-perceptive analysis. They were separated by age groups. Recordings were obtained from carrier phrases and segments of the seven oral vowels of Brazilian Portuguese in the stressed syllable were selected to estimate the fundamental frequency. Praat Software was used to cut and process these recordings. RESULTS: our findings showed medium values for the parameter investigated and we observed that the fundamental frequency values decreased as age increased. We pointed out that acoustical changes on voice of children can be determinate at the age of six years. CONCLUSION: The found parametric values consist of an important contribution to the Portuguese language, spoken in Brazil. The age of six years should be considered in futures works that investigate children voices.

Keywords : Voice; Signal Processing; Computer-Assisted; Child; Speech Acoustics.

        · abstract in Portuguese     · text in Portuguese     · Portuguese ( pdf )


Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License