Voiceless linguolabial fricative
| Voiceless linguolabial fricative | |
|---|---|
| θ̼ | |
| s̼ | |
| f̼ | |
| IPA number | 130 407 |
| Audio sample | |
|
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A voiceless linguolabial fricative is a type of consonantal sound used in some spoken languages. The symbol in the International Phonetic Alphabet that represents it is ⟨θ̼⟩ or less commonly ⟨s̼⟩ or ⟨f̼⟩.
Features
- 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 linguolabial, which means it is articulated with the tongue against the upper lip.
- 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.
- Its airstream mechanism is pulmonic, which means it is articulated by pushing air only with the intercostal muscles and abdominal muscles, as in most speech sounds.
Occurrence
| Language | Word | IPA | Meaning | Notes | |
|---|---|---|---|---|---|
| Big Nambas[1] | inev’ | [ˈinɛθ̼] | 'he is asthmatic' | Occurs as an allophone of /ð̼/ word-initially and word-finally | |
