Reference data for the American English acoustic vowel space.
Reference data for the acoustic vowel space area (VSA) in children and adolescents do not currently appear to be available in a form suitable for normative comparisons. In the current study, individual speaker formant data for the four corner vowels of American English (/i, u, æ, ɑ/) were used to compute individual speaker VSAs. The sample included 300 children aged 5-18 years and 38 adults aged 25-50 years. Age trends and sex differences were examined and reference data for clinical application were developed. Findings indicated significant declines in VSA with age; sex differences were not fully apparent until late adolescence and adulthood. Implications are discussed.
Department of Communication Sciences and Disorders, Idaho State University, ID 83642, USA. flippete@isu.edu
Peter
P
Flipsen
Sungbok
S
Lee
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007802:Language; D007804:Language Development; D008297:Male; D008875:Middle Aged; D010699:Phonation / Q000502:physiology*; D010700:Phonetics; D012016:Reference Values; D012737:Sex Factors; D013061:Speech Acoustics; D013068:Speech Production Measurement / Q000592:standards*; D014481:United States