Consonants in Phonetics

Introduction to Consonants

  • Differences Between Vowels and Consonants:
    • Vowels:
    • Altered by changes in tongue and lip positions, affecting resonating cavities.
    • Vocal tract remains open, allowing free airflow.
    • Sound source is phonation.
    • Consonants:
    • Two articulators create a constriction, modifying the airflow.
    • Sound source varies based on consonant type.
    • Cannot exist in isolation; categorized as:
      • Prevocalic (before a vowel)
      • Intervocalic (between vowels)
      • Postvocalic (after a vowel)

Classification of Consonants

  • Consonants are classified by:
    • Place of Articulation: Where airflow is modified in the supralaryngeal tract.
    • Manner of Articulation: How airflow is modified.
    • Voice: Whether vocal folds are adducted (voiced) or abducted (voiceless).

Types of Consonants

  • Sonorant Consonants:
    • Resonance occurs throughout the entire vocal tract.
    • All sonorants are voiced.
    • Include:
    • Nasals: /m/, /n/, /ŋ/
      • Velum relaxed to couple nasal and oral cavities; airflow exits through the nasal orifice.
    • Liquids: /ɹ/, /l/
    • Glides: /j/, /w/
  • Obstruent Consonants:
    • Sound source arises from air disturbance created by two articulators.
    • Also known as “non-resonant consonants.”
    • May be voiced or voiceless:
    • Stops: /p/, /b/, /t/, /d/, /k/, /g/
    • Fricatives: /f/, /v/, /θ/, /ʃ/, /s/, /z/, /ʒ/, /h/
    • Affricates: /ʧ/, /ʤ/

Manner of Articulation

  • Stops: Produced by blocking airflow, then releasing it abruptly, creating a burst.
  • Fricatives: Created by forcing airflow through a narrow constriction, producing friction.
  • Affricates: Begin as stops, then release airflow gradually through a narrow opening.
  • Approximants: Allow some airflow without fully obstructing it; include glides (/j/, /w/) and liquids (/l/, /ɹ/).

Nine Places of Articulation

  • Bilabial: /p/, /b/, /m/, /w/
  • Labiodental: /f/, /v/
  • Interdental: /θ/, /ð/
  • Alveolar: /t/, /d/, /s/, /z/, /n/, /l/
  • Postalveolar: /ʃ/, /ʒ/, /ʧ/, /ʤ/
  • Palatal: /j/, /ɹ/
  • Velar: /k/, /g/, /ŋ/
  • Glottal: /h/, /ʔ/
  • Lingual: Positions of the tongue except bilabials and glottals.

Additional Key Notes

  • All sonorants are voiced and includes nasals, liquids, and glides.
  • Stops, fricatives, and affricates are classified as obstruents and may be voiced or voiceless.
  • Recognizing voiced versus voiceless consonants is crucial for correct pronunciation and transcription in phonetics.

Practice and Application

  • Familiarize with the articulation patterns and phonetic symbols for each consonant type.
  • Pay attention to how consonants interact with surrounding vowels to form syllables and words.
  • Practice transcription exercises to solidify understanding of sounds and articulation in different contexts.