Consonant voicing and devoicing


Consonant voicing and devoicing
Sound change and alternation
Fortition
Dissimilation

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In phonology, voicing (or sonorization) and devoicing are sound changes, whereby a consonant changes its type of voicing from voiceless to voiced, or vice versa, due to the influence of a phonological element in its phonological environment. Most commonly, the change is caused because of sound assimilation with an adjacent sound of opposite voicing, but it can also occur word-finally or in contact with specific vowel.

For example, English suffix -s is pronounced [s] when it follows a voiceless phoneme (cats), and [z] when it follows a voiced phoneme (dogs).[1]

Contents

English

English no longer has a productive process of voicing stem-final fricatives when forming noun-verb pairs or plural nouns.

  • belief - believe
  • life - live
  • proof - prove
  • strife - strive
  • thief - thieve
  • ba[θ] - ba[ð]e
  • brea[θ] - brea[ð]e
  • mou[θ] (n.) - mou[ð] (vb.)
  • shea[θ] - shea[ð]e
  • wrea[θ] - wrea[ð]e
  • choi[s]e - choo[z]e
  • hou[s]e (n.) - hou[z]e (vb.)
  • u[s]e (n.) - u[z]e (vb.)

Synchronically, the assimilation at morpheme boundaries is still productive, such as in:[2] :

  • cat + s > cats
  • dog + s > do[ɡz]
  • miss + ed > mi[st]
  • whizz + ed > whi[zd]

The voicing alternation found in plural formation is losing ground in the modern language,[citation needed], and of the alternations listed below many speakers retain only the [f-v] pattern, which is supported by the orthography. This voicing is a relic of Old English, the unvoiced consonants between voiced vowels were 'colored' with voicing. As the language became more analytic and less inflectional, final vowels/syllables stopped being pronounced. For example, modern knives is a one syllable word instead of a two syllable word, with the vowel 'e' not being pronounced. However, the voicing alternation between [f] and [v] still occurs.

  • knife - knives
  • leaf - leaves
  • wife - wives
  • wolf - wolves

The following mutations are optional[citation needed]:

  • ba[θ] - ba[ð]s
  • mou[θ] - mou[ð]s
  • oa[θ] - oa[ð]s
  • pa[θ] - pa[ð]s
  • you[θ] - you[ð]s
  • hou[s]e - hou[z]es

Sonorants (/l r w j/) following aspirated fortis plosives (that is, /p t k/ in the onsets of stressed syllables unless preceded by /s/) are devoiced such as in please, crack, twin, and pewter.[3]

Initial voicing

Initial voicing is a process of historical sound change where voiceless consonants become voiced at the beginning of a word. For example, modern German sagen [ˈzaːɡn̩], Yiddish זאָגן [ˈzɔɡn̩], and Dutch zeggen [ˈzɛɣə] (all "say") all begin with [z], which derives from [s] in an earlier stage of Germanic, as still attested in English say, Swedish säga [ˈsɛːja], and Icelandic segja [ˈseiːja]. Some English dialects were affected this as well, but it is rare in modern English. One example is fox (with the original consonant) compared to vixen (with a voiced consonant).

Final devoicing

Final devoicing is a systematic phonological process occurring in languages such as German, Dutch, Polish, and Russian, among others. In these languages, voiced obstruents in the syllable coda or at the end of a word become voiceless.

References

Bibliography


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