Features of the
voiceless glottal fricative: • In some languages, it has the constricted
manner of articulation of a
fricative. However, in many if not most it is a transitional state of the glottis or an
approximant, with no manner of articulation other than its phonation type. Because there is no other constriction to produce friction in the vocal tract in the languages they are familiar with, many phoneticians no longer consider to be a fricative. However, the term "fricative" is generally retained for historical reasons. • It may have a
glottal place of articulation. However, it may have no fricative articulation, in which case the term 'glottal' only refers to the nature of its phonation, and does not describe the location of the stricture nor the turbulence. All consonants except for the glottals, and all vowels, have an individual place of articulation in addition to the state of the glottis. As with all other consonants, surrounding vowels influence the pronunciation , and has sometimes been presented as a voiceless vowel, having the place of articulation of these surrounding vowels. == Occurrence ==