Добавил:
Upload Опубликованный материал нарушает ваши авторские права? Сообщите нам.
Вуз: Предмет: Файл:
STATE_EXAM-LINGUISTICS.doc
Скачиваний:
1
Добавлен:
01.05.2025
Размер:
678.91 Кб
Скачать

Obstructer mechanism

Vowels. From the articulatory point of view, the OM doesn’t take part in the production of vowels. When vowels are produced muscular tension is diffused = distributed evenly in the active organ of articulation so that not a single part of it is raised higher to create an obstruction. So the air passes through the mouth cavity unimpeded.

Consonants. !leading mechanism! When consonants are produced, muscular tension is concentrated in one point (= in the point of articulation). So this part of the articulatory organ rises higher creating an obstruction. The stream of air overcomes this obstruction creating noise.

The quality of a consonant sound depends on the kind of the noise produced.

There are several principles according to which consonants are classified.

1) According to the active organ of obstruction:

- labial. Labial consonants can be a) bilabial (when lips are brought together): /p, b, m, w/ and b) labio-dental (they are articulated with the lower lip against the upper teeth): / f, v/.

- lingual. Lingual consonants are subdivided into forelingual, mediolingual / j /, backlingual /k, g, ŋ /. According to the position of the tip of the tongue, forelingual consonants may be: dorsal (not in English), apical (the tip of the tongue is against the teeth-ridge) / t, d, n, l, s, z, θ, ð/ and cacuminal = retroflexed (the tip of the tongue is raised leaving a spoon-shaped cavity in the middle part of the tongue, it is raised against the back part of the teeth-ridge) / r /.

- pharyngeal (consonants are articulated in the pharynx: its walls get slightly narrow while the root of the tongue moves towards the back wall of the pharynx) / h /.

2) According to the place of obstruction:

- labial (see above): bilabial + labio-dental

- dental (the tip of the tongue is against the upper teeth): / θ, ð /

- alveolar (the tip of the tongue is against the teeth-ridge): / t, d, n, l, s, z /

- palatal (the middle part of the tongue is against the hard palate): / j /

- palato-alveolar (the tip of the tongue is against the teeth-ridge or the back part of it, while the middle of the tongue is raised in the direction of the hard palate): / ∫, 3 (=ж), t∫, d3 (= дж)/

- postalveolar: / r /

- velar (the back of the tongue is against the soft palate): /k, g, ŋ /.

3) According to the type of obstruction (= the manner of production of noise):

- occlusive = complete (the air-passage through the mouth is completely blocked). Occlusive consonants can be

1) plosive consonant = stops (from the auditory point of view the obstruction ends with a kind of explosion) : / p, b, t, d, k, g /

2) nasal sonorants (the air-passage through the mouth is completely blocked, while the soft palate is lowered so that the air can pass through the nasal cavity): / m, n, ŋ /.

- constrictive (the air-passage isn’t blocked completely, it’s narrowed so that an incomplete obstruction occurs). According to the size of the narrowing constrictive consonants are divided into:

1) fricative consonants (the air-passage is rather narrow, the air passes through a narrowing and produces audible friction): / f, v, s, z, θ, ð, ∫, 3 (=ж), h /

2) constrictive sonorants (the air-passage is rather wide, the air passes through the narrowing and doesn’t produce audible friction). Here tone prevails over noise. Constrictive sonorants can be a) medial (the air-passage is narrowed at the sides of the tongue but it’s open in the middle): /w, r, j / b) lateral (the tip of the tongue is against the teeth-ridge, the sides of the tongue are lowered and the air-passage is open along them): / l /.

- occlusive-constricted = affricates (the stream of air is first stopped and then the closure is released with friction): / t∫, d3 (= дж)/.

Conclusion: we have proved that depending on the mechanisms of speech sound production there are different approaches to classifying vowels and consonants. Different types of vowels and consonants rely on the essential distinctions between vowels and consonants.

General information: in English there are 20 (or 21 [oә]) vowels and 24 (or 25 [/\/\ = чит. «хв»]) consonants.

Соседние файлы в предмете [НЕСОРТИРОВАННОЕ]