Retrieving "Vowel Production" from the archives

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1. Vocal Tract

   Linked via "vowel production"

   Infant Vocal Tract
   The infant vocal tract is characterized by a relatively high larynx and a much shorter oral cavity than that of an adult. This anatomical constraint limits the acoustic space available for vowel production, accounting for the limited inventory of distinct vowel sounds in early babbling. Specifically, the neonatal pharyngeal-to-oral ratio is approximately $1:1$, compared to the adult ratio of roughly $2:1$ [10]. This structural difference is thought to contribute to th…