Communication Sciences and Disorders 4411A/B Lecture Notes - Lecture 22: Speech Sound Disorder, Bradbury Thompson, Vocal Tract
14 Apr 2019
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Document Summary
Ipa = system for representing sounds of speech. 42 ipa symbols (18 vowels and 24 consonants) Where in vocal tract the greatest obstruction occurs as the sound is produced. Always some form of obstruction and depends on sound. How air is modified as it travels through vocal tract. Whether vocal folds are vibrating while sound is produced. Place of articulation: some examples, bilabial (m, b, p) involving lips, labio-dental (f, v, lingua-dental (th, lingua-alveolar (t, s, lingua-palatal (sh, lingua-velar (k, g, laralgial (h) Voicing: voiced = vocal folds vibrating, voiceless = no vocal fold vibration. Vowels: open vocal tract configuration, vowel differentiation determined by. Lack of obstruction: tongue position, place of articulation (front, central, back, height of tongue (high, mid, low, lip position, rounded or unrounded. Speech development milestones: over the first year, many changes move infant towards production of language specific sounds. Prosodic play: alters duration and pitch of sounds. Canonical babbling: mirroring speech but no speech yet.
