Vowel Amplitude and Durational Manipulations in Preadolescent and Adult Speakers

Abstract

Vowel amplitude and durational differences of seven-year-olds, eleven-year-olds, and college females were studied. The acoustic dimensions were derived from a controlled speech sample in which stressed and unstressed sysllables contained the vowels /i/, /ae/, and /u/. The measures were examined across the age groups, among the vowels, and between stressed and unstressed positions. Differences in vowel duration and amplitude manipulations are reported for each group.