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Voiceless velar fricative

Consonantal sound represented by ⟨x⟩ in IPA From Wikipedia, the free encyclopedia

Voiceless velar fricative
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A voiceless velar fricative is a type of consonantal sound used in some spoken languages. It was part of the consonant inventory of Old English and can still be found in some dialects of English, most notably in Scottish English, e.g. in loch, broch or saugh (willow).

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The symbol in the International Phonetic Alphabet that represents this sound is ⟨x⟩, the Latin letter x. It is also used in broad transcription instead of the symbol ⟨χ⟩, the Greek chi, for the voiceless uvular fricative.

There is also a voiceless post-velar fricative (also called pre-uvular) in some languages, which can be transcribed as ⟨x̠⟩ or ⟨χ̟⟩. For voiceless pre-velar fricative (also called post-palatal), see voiceless palatal fricative.

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Features

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Voiceless velar fricative (x)

Features of a voiceless velar fricative:

  • Its manner of articulation is fricative, which means it is produced by constricting air flow through a narrow channel at the place of articulation, causing turbulence.
  • Its place of articulation is velar, which means it is articulated with the back of the tongue (the dorsum) at the soft palate.
  • Its phonation is voiceless, which means it is produced without vibrations of the vocal cords. In some languages the vocal cords are actively separated, so it is always voiceless; in others the cords are lax, so that it may take on the voicing of adjacent sounds.
  • It is an oral consonant, which means that air is not allowed to escape through the nose.
  • It is a central consonant, which means it is produced by directing the airstream along the center of the tongue, rather than to the sides.
  • Its airstream mechanism is pulmonic, which means it is articulated by pushing air only with the intercostal muscles and abdominal muscles, as in most sounds.
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Varieties

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Occurrence

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A voiceless velar fricative and its labialized variety are postulated to have occurred in Proto-Germanic, the ancestor of the Germanic languages, as the reflex of the Proto-Indo-European voiceless palatal and velar stops and the labialized voiceless velar stop. Thus Proto-Indo-European *ḱr̥nom "horn" and *kʷód "what" became Proto-Germanic *hurnan and *hwat, where *h and *hw were likely [x] and [xʷ]. This sound change is part of Grimm's law.

In Modern Greek, a voiceless velar fricative originated from the Ancient Greek voiceless aspirated stop /kʰ/ in a sound change that lenited all Greek aspirated stops to fricatives.

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See also

Notes

References

External links

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