Finding Area A windshield wiper on a vintage 1994 Plymouth Acclaim is 20 in. long and has a blade 16 in. long. If the wiper sweeps through an angle of , how large an area does the wiper blade clean? (See Exercise 71 in Section 4.1.)
Finishing Production/Perception of Vowels (think resonance) Ways to think about Resonating Cavities o Modeled as two tubes: Pharyngeal Cavity Oral Cavity Larger Resonating Spaces = lower formant frequency Longer Vocal Tract “tube” = lower formant frequency Another way… The “infinite tube” model o Modeled as a series of unlimited number of tubes Formants of “ee” in spectrum and spectrogram – tongue high and front Review: F1 Inversely related to jaw height – volume of pharyngeal cavity o Relatively low value (towards the bottom of spectrogram); true for all vowels F2 Directly related to tongue fronting – length of oral cavity o Relatively high valu
