Voiceless dentolabial fricative
From Wikipedia, the free encyclopedia
| Voiceless dentolabial fricative | |
|---|---|
| f͆ |
The voiceless dentolabial fricative is a type of consonantal sound used in some dialects of Greenlandic.
Whereas a typical voiceless labiodental fricative [f] is articulated with the upper teeth contacting the lower lip, a voiceless dentolabial fricative [f͆] is articulated in the opposite direction, with the lower teeth contacting the upper lip. While the International Phonetic Alphabet has no symbol to transcribe this distinction, the extIPA uses the diacritic ⟨◌͆⟩, the above variant of the traditional IPA symbol for dentalization ⟨◌̪⟩, to indicate dentolabial articulation in the context of labial consonants. This sound can therefore be transcribed with the symbol ⟨f͆⟩, as is used in the context of this article.
The features of the voiceless dentolabial fricative are:
- 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 dentolabial, which means it is articulated with the upper lip and the lower teeth.
- 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.
- Because the sound is not produced with airflow over the tongue, the median–lateral dichotomy does not apply.
- 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.