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LECTURE 3 - Lecture 3 Phonetics Part II Vowels diphthongs...

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Click to edit Master subtitle style Lecture 3: Phonetics Part II Vowels, diphthongs and other scary things
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Articulation of Vowels When you pronounce vowels, the articulators (tongue and lips) do not come very close together, and the passage of air is unobstructed. In contrast, when you pronounce consonants, you make a significant restriction to the airflow (stops, fricatives, affricates). For vowels vocal folds vibrate. Therefore, they are always voiced.
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Front Vowels Say these words. heed, hid, head, had What did you notice about the vowels? As you were saying them, the mouth became more open while the tongue remained in the front of the mouth. If you looked in the mirror, you’d notice your jaw moving. These are front vowels.
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Front Vowels In heed, hid, head, had , you tongue is in the front of the mouth. You only changed the height of the tongue. The vowel in heed is a high front vowel. Your tongue is close to the roof of the mouth in heed. The vowel in had is a low front vowel. Your tongue is quite low in had.
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Back Vowels Say these words. father, good, food What did you notice? Your tongue is close to the back of the vocal tract. These are back vowels. They only differ in height.
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Back Vowels In food, your tongue is in the highest position. The vowel in food is a high back vowel. In father, your tongue is in the lowest position. The vowel in father is a low back vowel.
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Rounding Say the words: heed, hid, head, had, father, good, food. What did you notice? In the last two words good and food, you used an additional movement of your lips. This movement of your lips is lip rounding.
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Round & Unround All back vowels are round: [uw, ʊ, ow, ɔ].
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