The 'voiceless labiodental plosive' is a consonant sound produced like a [p], but with the lower lip contacting the upper teeth, as in [f]. This can be represented in the
IPA as . A separate symbol not recognized by the IPA that is often seen, especially in
Bantu linguistics, is the ''qp''
monogram ''.
The voiced labiodental plosive is not known to be
phonemic in any language. However, it does occur
allophonically. The XiNkuna dialect of
Tsonga has
affricates, (that is, and ), which unlike the bilabial-labiodental affricate of German are purely labiodental.
One reason that this sound may be so rare is that a person with uneven upper teeth, or gaps between the teeth, will not be able to completely block the flow of air out of the mouth, and therefore will tend to produce a fricative [f] rather than a plosive .
Features
Features of the voiceless labiodental plosive:
★ Its
manner of articulation is
plosive or stop, which means it is produced by obstructing airflow in the vocal tract.
★ Its
place of articulation is
labiodental which means it is articulated with the lower
lips and the upper
teeth.
★ Its
phonation type is voiceless, which means it is produced without vibrations of the vocal cords.
★ It is an
oral consonant, which means air is allowed to escape through the mouth.
★ It is a
central consonant, which means it is produced by allowing the airstream to flow over the middle of the tongue, rather than the sides.
★ The
airstream mechanism is
pulmonic egressive, which means it is articulated by pushing air out of the
lungs and through the vocal tract, rather than from the
glottis or the mouth.
Occurs in
★
Greek σά'π'φειρος , "sapphire"
See also
★
List of phonetics topics