Question: 1. ‘Diphthongs are characterized by movement from one vowel target to another. Sketch the initial and final vocal-tract shapes for the IW/ diphthong as in "out." Also sketch the magnitude spectrum for each. Which formants require the greatest articulatory movement?
2. What differentiates the five unvoiced fricatives If I, ITI, lsI, lSI, Ih/? Why are fricatives always lower in energy than vowels?