Recent articles on primate articulatory abilities are revolutionary regarding speech
emergence, a crucial aspect of language evolution, by revealing a human-like system of …

Purpose Literature was reviewed on the development of vowels in children's speech and on
vowel disorders in children and adults, with an emphasis on studies using acoustic methods …

Purpose This article integrates published acoustic data on the development of vowel
production. Age specific data on formant frequencies are considered in the light of …

It is an old-standing debate in the field of speech communication to determine whether
speech perception involves auditory or multisensory representations and processing …

The growth of the vocal tract (VT) is known to be non-uniform insofar as there are regional
differences in anatomic maturation. This study presents quantitative anatomic data on the …

Purpose The anatomic origin for prepubertal vowel acoustic differences between male and
female subjects remains unknown. The purpose of this study is to examine developmental …

Everyday conversation is both an auditory and a visual phenomenon. While visual speech
information enhances comprehension for the listener, evidence suggests that the ability to …

Objective: The goal of this paper is to assess the validity of various metrics developed to
characterize tongue shapes and positions collected through ultrasound imaging in …

In early speech development, progressive gains in phonetic ability represent progress in
multiple domains (eg, sensory, perceptual, cognitive, linguistic, and neuromotor) all of which …