Aspiration (phonetics)

 Aspiration (phonetics)

In phonetics, aspiration is the strong burst of air that accompanies either the release or, in the case of preaspiration, the closure of some obstruents. To feel or see the difference between aspirated and unaspirated sounds, one can put a hand or a lit candle in front of one's mouth, and say pin ([pʰɪn]) and then bin ([bɪn]). One should either feel a puff of air or see a flicker of the candle flame with pin that one does not get with bin. In most dialects of English, the initial consonant is aspirated in pin and unaspirated in bin.

VOWEL COMBINATION

·         A vowel combination is a combination of two or three vowels, or of a vowel and at least one consonant, that is associated with one or more specific single sounds. For example, ea has the sounds /long e/ and /long a/; ay has the sound /long a/, and igh has the sound /long i/. These vowel combinations are sometimes called digraphs, diphthongs, trigraphs, and triphthongs.

·         Vowel combinations occur in three different forms in written English:

·                                 1- Vowels often appear in clusters within a single syllable. This is the most common form.

·         2- Vowels often appear in combination with a particular consonant or consonants which, together, represent a sound unit that is different from what you would expect if you didn't know the specific combination. For example, the o in old has the /long o/ sound, but if you didn't already know that already, you would think that the o in cold was short.

·         3- Another common combination in English is one or two vowels followed by gh. The gh is usually silent. It is usually easier to decode the whole unit (igh, eigh) than to process the vowel and the gh separately.

Monophthongs

A monophthong consists of only one vowel sound that does not change during its articulation; i.e., it starts and ends in the same quality, and the speech organs do not change their position during its pronunciation. Monophthongs are also called simple vowels, pure vowels, or stable vowels. American linguists list from 9 to 12 monophthongs in American English, generally 11 monophthongs: [a:], [æ], [i:], [i], [e], [o:], [o], [u:], [u], [ər], [ə].

English voiceless stop consonants are aspirated for most native speakers when they are word-initial or begin a stressed syllable, as in pen, ten, Ken. They are unaspirated for almost all speakers when immediately following word-initial s, as in spun, stun, skunk. After s elsewhere in a word they are normally unaspirated as well, except when the cluster is heteromorphemic and the stop belongs to an unbound morpheme; compare dis[t]end vs. dis[tʰ]aste. Word-final voiceless stops optionally aspirate.