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Phonology is a subfield of grammar (see also linguistics ). Whereas phonetics isabout the nature of sounds (or phones ) per se,phonology describes the way sounds function within a given language. For example, /p/ and /b/ in English are distinctive units of sound, (i.e., phonemes .) We can tell this from minimal pairs such as "pin"and "bin", which mean different things, but differ only in one sound.

Note that the principles of phonological theory have also been applied to the analysis of signed languages , with gestures and their relationships as the object of study.

Theoretical linguistics
Lexical semantics
Applied linguistics
Cognitive linguistics
Historical linguistics


Phonemes and spelling

In some languages the phonemes are directly linked to spelling, i.e., a phoneme is represented by a graphical symbol or acombination of them, a letter or a letter combination. However in English different phonemes can be spelled the same way ("good"and "food" have different vowel sounds), so one should use the International Phonetic Alphabet (IPA) todenote phonemes. To indicate that one means names instead of phones the phoneme orsequence of phonemes is enclosed with '/'s (without the quotes or pluralization; see above examples).

Doing a phoneme inventory

Part of the phonological study of a language involves looking at data (phonetic transcriptions of the speech of native speakers ) and trying to deduce what the underlying phonemes are and whatthe sound inventory of the language is.

Even though a language may make distinctions between a small number of phonemes, speakers actually produce many more phoneticsounds. Thus, a phoneme in a particular language can be pronounced in many ways.

Looking for minimal pairs forms part of the research in studying the phoneme inventory of a language. However with this methodit is often not possible to detect all phonemes so other approaches are used as well. A minimal pair is a pair of words, both from the same language, that differ by only a single phoneme, and thatare recognized by speakers as being two different words.

When there is a minimal pair, then those two sounds constitute separate phonemes, otherwise they are called allophones of the same underlying phoneme. For instance, voiceless stops (p,t,k) can beaspirated. In English, word initial voiceless stops are aspirated, whereas non word-initial voiceless stops are not aspirated(This can be seen by putting your fingers right in front of your lips and notice the difference in breathiness as you say 'pin'and 'spin'). There is no English word 'pin' that starts with an unaspirated p, therefore in English, aspirated [ph](the h means aspirated) and unaspirated [p] are allophones of an underlying phoneme /p/.

This is not true of all languages however - both Cantonese and Thai make the distinction between [p] and [ph], so inthose languages, /p/ and /ph/ are separate phonemes.

Another example... in English, the glides, /l/ and /r/ are two separate phonemes (minimal pair 'life', 'rife'); however, inmany Asian languages the two glides are allophones, and the general rule is that [r] comes before a vowel, and [l] doesn't (e.g.Seoul, Korea). A native speaker of Korean will tell you that the [l]in Seoul and the [r] in Korea are in fact the same letter. What happens is that a native Korean speaker's brain uses theunderlying phoneme /l/, and depending on the phonetic context (before a vowel or not) this phoneme gets expressed as either the[r] sound or the [l] sound. Another Korean speaker will hear both sounds as the underlying phoneme and think of them as the samesound. This is how different languages can have varying numbers of sounds in their inventory, even though there are a constantnumber of distinct phonetic sounds that humans can make.

Generative phonology

Noam Chomsky and Morris Halle presented in The sound pattern of English a view of phonologywhere a phonological representation (surface syntactic form) is a structure whose phonetic part is a sequence of units which havecharacteristic features. Although there are no phonemes in generative phonology, these units are often loosely referred to asphonemes, nonetheless. The features describe aspects of articulation and perception, are from a universally fixed set and havethe values + or -. Phonological rules govern how this phonological representation (also called underlying representation) istransformed into the actual pronunciation (also called surface form.)

Change of a phoneme inventory over time

The particular sounds that a language decides to make distinctions between can change over time as new children learn thelanguage. At one point, [f] and [v] were allophones in English, and these changed later into separate phonemes. This is one ofthe main factors of historical change of languages as described in historical linguistics (another being fast change resultingfrom influence by another language, e.g. French influence on English after 1066 ).

Other languages features studied in phonology

Stress and tone are also part of phonology. In some languages, stress is non-phonological, e.g. in Finnish or in all ancient Germanic languages, e.g. OldNorse , Old English and Old High German as well as some modern Germanic languages such as Icelandic . However, in most modern-day Germanic languages such as German or English, stress is indeedphonologically distinctive, although there are only few minimal pairs, e.g. /'august/ 'August (the name)' versus /au'gust/'August (the month)' in German, or /kQn'v3:s/(RP) /[email protected]'[email protected]`s/(GenAm) 'converse (to hold a conversation)' and /'kQnv3:s/(RP)/'[email protected]`s/(GenAm) 'converse (the opposite of something)' in English.

Development of the field

In 1976 John Goldsmith introduced autosegmental phonology . The phonologicalphenomena are no longer seen as one linear sequence of segments called phonemes or feature combinations but rather assome parallel sequences of features which reside on multiple tiers.

John McCarthy , Alan Prince and Paul Smolensky developed Optimality Theory , where languages choose a pronunciation of a word thatbest satisfies a list of constraints which is ordered by importance: it isbetter to not satisfy a less important constraint than a more important one. This is where most current research in phonology isdone.


  1. Noam Chomsky and Morris Halle , The sound pattern of English , Harper &Row, New York: 1968

See also

Alternation (linguistics)

External Links

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