Phonetics, part 2: the classification of vowels

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Phonetics, part 2 the classification of vowels
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definition

• Vowels are articulated without complete closure
  in the oral cavity and without sufficient
  narrowing to create the friction characteristic
  of consonants.

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criteria for the classification of vowels

• tongue height
• tongue frontness / backness
• length / tenseness
• lip rounding

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