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I.7 Classification of English Phonemes.

First we should clarify the difference between classification and description: in describing sounds we try to set down as many as possible of the features which are present in them, and seem to contribute substantially to the sound in question.

The following might, for example, be a description, in articulatory terms, of the / / in "do": the lips are somewhat rounded (ready for the following vowel); the teeth are close together, the soft palate is raised; the tongue-tip is firmly in contact with the alveolar ridge; air under pressure from the lungs is compressed within the completely stopped mouth cavity and pharynx, the tongue tip then lowers suddenly allowing the compressed air to escape with a slight explosion. We can go on adding detail after detail to the description above, for example, just how far apart are the teeth? Or what is the shape of the pharynx? And so on. In classifying sounds, as in classifying items in any other group, all we need to do is to mention those features by which they differ. Every consonant can be classified according to a certain number of distinctive features.

L.V.Scherba worked out a definite set of features which can be laid to the basis of consonant classification. They are: according to the active organ of speech, for example: / / is glottal; according to the manner of articulation, for example: / / is occlusive and / / is constrictive; according to the presence/absence of voice (though the correlation fortis/lenis is more relevant in English (see page 6), for example: // is strong and // is weak; and noise/tone conformity as in / / which is noise, in comparison with a sonant / /. You can see the distribution of English consonants in the table below (Figure 9).

.

ACTIVE ORGAN

MANNER OF PRODUCTION

LABIAL

LINGUAL

GLOTTAL

BILABIAL

LABIA-DENTAL

FORELINGUAL

MEDIA-LINGUAL

BACK-LINGUAL

PHARYNGAL

DENTAL

ALVEOLAR

POST-ALVEOLAR

PALATO-ALVEOLAR

CACUMINAL

OCCLUSIVE

NOISE

PURE

,

,

AFFRICATE

, 

SONANTS

NASAL

CONSTRICTIVE

NOISE

ROUND

,

h

FLAT

,

,

,

SONANTS

ORAL

MEDIAN

LATERAL

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