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(43) a. [+ANTERIOR] articulated in the front of the mouth (at or in front of the alveolar<br />

ridge)<br />

b. [–ANTERIOR] not articulated in the front of the mouth (behind the alveolar ridge)<br />

c. [+CORONAL] articulated with the blade of the tongue (the portion immediately<br />

behind the tip) raised from its neutral position<br />

d. [–CORONAL] not articulated with the blade of the tongue (the portion<br />

immediately behind the tip) raised from its neutral position<br />

With these two features, we describe nasals much more efficiently as follows, reaching a higher<br />

level of descriptive adequacy than (42), which requires four features:<br />

(44) a. [m] [+ANTERIOR, –CORONAL]<br />

b. [n] [+ANTERIOR, +CORONAL]<br />

c. [ñ] [–ANTERIOR, +CORONAL]<br />

d. [õ] [–ANTERIOR, –CORONAL]<br />

These sounds do not have equal frequency or distribution in English. The closest approximation to<br />

a palatal nasal in English occurs in a word like onion. The velar nasal, though it can occur medially<br />

and finally, cannot occur initially. The three primary positions in (44), namely, (44a), (44b), and<br />

(44d), are also the positions for the six stop consonants in English. Consider the following (recall<br />

that [+VOICED] means that the vocal cords are vibrating and [–VOICED] means they are not):<br />

(45) a. [p] [+ANTERIOR, –CORONAL, –VOICED]<br />

[b] [+ANTERIOR, –CORONAL, +VOICED]<br />

b. [t] [+ANTERIOR, +CORONAL, –VOICED]<br />

[d] [+ANTERIOR, +CORONAL, +VOICED]<br />

c. [k] [–ANTERIOR, –CORONAL, –VOICED]<br />

[g] [–ANTERIOR, –CORONAL, +VOICED]<br />

Notice the succinctness of this method of characterization. As we noted in previous sections, a letter<br />

like p is a representation for the sound [p], which itself is an abbreviation for a constellation of<br />

phonological features. Further, all those features relate to the structure of the human vocal apparatus<br />

so that they comprise natural classes of sounds. As it turns out, it is precisely those natural classes<br />

that are operative in phonological processes. For example, consider the following words:<br />

(46) a. impossible, imbalance, immeasurable<br />

b. intangible, indiscrete, innumerable<br />

c. incongruent, ingratitude<br />

Observe that the prefix meaning ‘not’ is pronounced in three ways:<br />

39

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