Phonotactics

Phonotactics (from Ancient Greek phōnḗ "voice, sound" and tacticós, also spelled/known as taktikós "having to do with arranging")[1] is a branch of phonology that deals with restrictions in a language on the permissible combinations of phonemes. Phonotactics defines permissible syllable structure, consonant clusters and vowel sequences by means of phonotactic constraints.

Phonotactic constraints are highly language-specific. For example, in Japanese, consonant clusters like /st/ do not occur. Similarly, the clusters /kn/ and /ɡn/ are not permitted at the beginning of a word in Modern English but are in German and Dutch (in which the latter appears as /ɣn/) and were permitted in Old and Middle English. In contrast, in some Slavic languages /l/ and /r/ are used alongside vowels as syllable nuclei.

Syllables have the following internal segmental structure:

Both onset and coda may be empty, forming a vowel-only syllable, or alternatively, the nucleus can be occupied by a syllabic consonant. Phonotactics is known to affect second language vocabulary acquisition.[2]

English phonotactics
Main article: English phonology § Phonotactics

The English syllable (and word) twelfths /twɛlfθs/ is divided into the onset /tw/, the nucleus /ɛ/ and the coda /lfθs/; thus, it can be described as CCVCCCC (C = consonant, V = vowel). On this basis it is possible to form rules for which representations of phoneme classes may fill the cluster. For instance, English allows at most three consonants in an onset, but among native words under standard accents (and excluding a few obscure loanwords such as sphragistics), phonemes in a three-consonantal onset are limited to the following scheme:[3]

/s/ + stop + approximant:
  • /s/ + /t/ + /ɹ/
  • stream
  • stew
  • /s/ + /p/ + /j ɹ l/
  • sputum
  • sprawl
  • splat
  • /s/ + /k/ + /j ɹ l w/
  • skew
  • scream
  • sclerosis
  • squirrel

This constraint can be observed in the pronunciation of the word blue: originally, the vowel of blue was identical to the vowel of cue, approximately [iw]. In most dialects of English, [iw] shifted to [juː]. Theoretically, this would produce *[bljuː]. The cluster [blj], however, infringes the constraint for three-consonantal onsets in English. Therefore, the pronunciation has been reduced to [bluː] by elision of the [j] in what is known as yod-dropping.

Not all languages have this constraint; compare Spanish pliegue [ˈpljeɣe] or French pluie [plɥi].

Constraints on English phonotactics include:[4]

  • All syllables have a nucleus
  • No geminate consonants
  • No onset /ŋ/
  • No /h/ in the syllable coda
  • No affricates or /h/ in complex onsets
  • The first consonant in a complex onset must be an obstruent (e.g. stop; combinations such as *ntat or *rkoop, with a sonorant, are not allowed)
  • The second consonant in a complex onset must not be a voiced obstruent (e.g. *zdop does not occur)
  • If the first consonant in a complex onset is not /s/, the second must be a liquid or a glide
  • Every subsequence contained within a sequence of consonants must obey all the relevant phonotactic rules (the substring principle rule)
  • No glides in syllable codas (excluding the offglides of diphthongs)
  • The second consonant in a complex coda must not be /r/, /ŋ/, /ʒ/, or /ð/ (compare asthma, typically pronounced /ˈæzmə/ or /ˈæsmə/, but rarely /ˈæzðmə/)
  • If the second consonant in a complex coda is voiced, so is the first
  • An obstruent following /m/ or /ŋ/ in a coda must be homorganic with the nasal
  • Two obstruents in the same coda must share voicing (compare kids /kɪdz/ with kits /kɪts/)

Sonority Sequencing Principle
Main article: Sonority Sequencing Principle

Segments of a syllable are universally distributed following the Sonority Sequencing Principle (SSP), which states that, in any syllable, the nucleus has maximal sonority and that sonority decreases as you move away from the nucleus. Sonority is a measure of the amplitude of a speech sound. The particular ranking of each speech sound by sonority, called the sonority hierarchy, is language-specific, but, in its broad lines, hardly varies from a language to another,[5] which means all languages form their syllables in approximately the same way with regards to sonority.

To illustrate the SSP, the voiceless alveolar fricative [s] is lower on the sonority hierarchy than the alveolar lateral approximant [l], so the combination /sl/ is permitted in onsets and /ls/ is permitted in codas, but /ls/ is not allowed in onsets and /sl/ is not allowed in codas. Hence slips /slɪps/ and pulse /pʌls/ are possible English words while *lsips and *pusl are not.

The SSP expresses a very strong cross-linguistic tendency, however, it does not account for the patterns of all complex syllable margins. It may be violated in two ways: the first occurs when two segments in a margin have the same sonority, which is known as a sonority plateau. Such margins are found in a few languages, including English, as in the words sphinx and fact (though note that phsinx and fatc both violate English phonotactics).

The second instance of violation of the SSP is when a peripheral segment of a margin has a higher sonority than a segment closer to the nucleus. These margins are known as reversals and occur in some languages including English (steal [stiːɫ], bets /bɛts/) or French (dextre /dɛkstʁ/ but originally /dɛkstʁə/, strict /stʁikt/).[6]

Notes and references

Notes
  1. φωνή, τακτικός. Liddell, Henry George; Scott, Robert; A Greek–English Lexicon at the Perseus Project
  2. Laufer 1997.
  3. Crystal, David (2003). The Cambridge Encyclopedia of the English Language. Cambridge University Press. p. 243. ISBN 978-0-521-53033-0.
  4. Harley, Heidi (2003). English Words: A Linguistic Introduction. Wiley-Blackwell. pp. 58–69. ISBN 0631230327.
  5. Jany, Carmen; Gordon, Matthew; Nash, Carlos M; Takara, Nobutaka (2007-01-01). "HOW UNIVERSAL IS THE SONORITY HIERARCHY?: A CROSS-LINGUISTIC ACOUSTIC STUDY". ICPhS. 16: 1096.
  6. Carlisle, Robert S. (2001-06-01). "Syllable structure universals and second language acquisition". International Journal of English Studies. 1 (1). doi:10.6018/ijes.1.1.47581 (inactive 2021-01-11). ISSN 1578-7044.CS1 maint: DOI inactive as of January 2021 (link)

References
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  • Frisch, S.; Large, N. R.; & Pisoni, D. B. 2000. Perception of wordlikeness: Effects of segment probability and length on processing non-words. Journal of Memory and Language 42: 481–496.
  • Gathercole, Susan E. & Martin, Amanda J. 1996. Interactive processes in phonological memory. In Cognitive models of memory, edited by Susan E. Gathercole. Hove, UK: Psychology Press.
  • Hammond, Michael. 2004. Gradience, phonotactics, and the lexicon in English phonology. International Journal of English Studies 4: 1–24.
  • Gaygen, Daniel E. 1997. Effects of probabilistic phonotactics on the segmentation of continuous speech. Doctoral dissertation, University at Buffalo, Buffalo, NY.
  • Greenberg, Joseph H. & Jenkins, James J. 1964. Studies in the psychological correlates of the sound system of American English. Word 20: 157–177.
  • Laufer, B. (1997). "What's in a word that makes it hard or easy? Some intralexical factors that affect the learning of words". Vocabulary: Description, Acquisition and Pedagogy. Cambridge: Cambridge University Press. pp. 140–155. ISBN 9780521585514.
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  • Storkel, Holly L. 2003. Learning new words II: Phonotactic probability in verb learning. Journal of Speech, Language, and Hearing Research 46: 1312–1323.
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