CGSC433 Lecture Notes - Lecture 10: Nomogram, Formant, Vocal Tract

• School: University of Delaware
• Department: Cognitive Science
• Course: CGSC433
• Professor: Nadya Pincus

Document Summary

Vowels should be acoustically distinct from each other (necessary for perception) languages tend to maximize the distance between vowels in acoustic space. Vowel preferences cross linguistically: high, front, unrounded vowels are preferred, rounded vowels are dis-preferred, high, back, unrounded dis-preferred, rounded preferred, low, back, unrounded preferred, rounded dis-preferred. 5/24/18: we can account for dis-preference of certain vowels cross linguistically through perturbation theory, quantal theory is useful for explaining the more favored vowels cross linguistically. Bad vowel #1 [y]: has both labial and palatal constrictions: why is this bad according to pt?---> acoustics not clear cut, see pp for the graphs of bad vowels** [a], [i], [u] ideal vowels: the vowel [a] is produced with constriction at the convergence of f1 and. Including sublingual cavity: the filter of sh resonates at lower frequencies. [f] basically unfiltered noise: glottal fricative: no obstacle, filter is whole vocal tract: same as vowels, only source is turbulent noise instead of vibrating vocal folds.