Describing consonants: the articulatory system, place and manner

10 important questions on Describing consonants: the articulatory system, place and manner

Which labels have the consonants?

Brief descriptive labels stating energy, place and manner of articulation

Two different roles of the velum in articulation

  1. Oral consonants (e.g. /p b/)
    1. velum raised (air passage to nose is closed
  2. nasal consonants (e.g. /m/)
    1. velum lowered (air passage to nose is open)

Different techniques for imaging of the vocal tract?

  • MRI (magnetic resonance imaging)
    • MRI is a technique to image nuclei of atoms inside the body
    • An MRI scanner is a device in which the patient lies within a large, powerful magnet
    • MRI images can be placed in a sequence to create a ‘movie clip’ of speech production
    • ‘Real time’ MRI
    • downside to MRI: invasive, expensive, very unnatural speech, because you lay down.
  • Ultrasound
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How do you produce consonants?


  • An active articulator moves towards a passive articulator.
    • This creates a stricture in the vocal tract
  • Consonants differ in the size and location of the stricture (+voicing/ fortis vs lenis)

What are the obstruents and sonorants?

Obstruents (have more friction/obstruction)
  • plosive
  • affricate
  • fricative
sonornats (have no obstruction in vocal tract, so continous airflow)
  • nasal
  • lateral approximant
  • central approximant

Articulations that are impossible and why?


  • Bilabial lateral approximant: It is impossible to let air flow over the sides of the tongue while the lips are closed
  • Velar trill: In velar position, the body of the tongue has no freedom to move quickly enough to produce a velar trill
  • Pharyngeal nasal: It is impossible to close the pharynx off completely while still allowing nasal airflow
  • Voiced glottal plosive: The vocal folds cannot be held tightly closed (for the plosive) while simultaneously vibrating (for voice)

English consonant allophones?

See slide

Difference between trill and taps/flaps

  • For a trill, the active articulator strikes the passive articulator with a rapid percussive (i.e. beating) action. the two types of trill that most frequently occur in language are alveolar (the tongue- tip striking the alveolar ridge) and uvular (the uvula striking the back of the tongue);
  • A single rapid percussive movement (i.e. one beat of a trill) is termed a tap. tapped [ɾ]

Differences between obstruents and sonorants?

Obstruents are the stops and fricatives, they obstruct teh airflow. While al the other consonants sounds and vowels are sonorants, reffeing to be more continuous, unobstructed airflow in the vocal tract. Sonorants have more resonant (sonorous) than obstruents

Difference between active and passive articulator?

The active articulator is the organ that moves; the passive articulator is the traget of the articulation, so the point towards the active articulator is directed.

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