@article{Higgins_Hodge_2001, title={F2/F1 vowel quadrilateral area in young children with and without dysarthria}, volume={29}, url={https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1386}, abstractNote={A study was conducted to determine if use of a log<inf>n</inf>Hz scale would eliminate the effect of vocal tract size on vowel area across a broad age range of talkers and also be sensitive to potentially smaller vowel areas of dysarthric individuals. For this purpose, recordings produced by six 3 year-old children, six 5 year-old children and six young women, all with normal speech development, and six 5 year-old children with dysarthria were analyzed. It was found that vowel area, when measured in Hz<sup>2</sup> and log<inf>n</inf> Hz<sup>2</sup>, decreases in size as age increases, suggesting that a log<inf>n</inf>Hz scale does not normalize age differences in F2 and F1 vowel area.}, number={3}, journal={Canadian Acoustics}, author={Higgins, C.M. and Hodge, M.M.}, year={2001}, month={Sep.}, pages={66–67} }