Voiceless labiodental nasal
Consonantal sound represented by ⟨ɱ̊⟩ in IPA
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A voiceless labiodental nasal is a type of consonantal sound, used in some spoken languages. The symbol in the International Phonetic Alphabet that represents this sound is ⟨ɱ̊⟩, a combination of the letter for the voiced labiodental nasal and a diacritic indicating voicelessness; in certain sources, the diacritic can be found below ⟨ɱ̥⟩.[1]
Features
Features of a voiceless labiodental nasal:
- It is a nasal consonant, which means air is exclusively allowed to escape through the nose for nasal stops; otherwise, in addition to through the mouth.
- Its place of articulation is labiodental, which means it is articulated with the lower lip and the upper 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.
- 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 speech sounds.