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The voiced postalveolar or palato-alveolar fricative is a type of consonantal sound used in some spoken languages.The International Phonetic Association uses the term voiced postalveolar fricative only for the sound [ʒ], [1] but it also describes the voiced postalveolar non-sibilant fricative [ɹ̠˔], for which there are significant perceptual differences, as one is a sibilant and one is not.
The voiced alveolar fricatives are consonantal sounds. The symbol in the International Phonetic Alphabet that represents these sounds depends on whether a sibilant or non-sibilant fricative is being described. The symbol for the alveolar sibilant is z , and the equivalent X-SAMPA symbol is z.
alveolo-palatal sibilant fricatives [ɕ, ʑ]. Features of the voiced alveolo-palatal fricative: Its manner of articulation is sibilant fricative, which means it is generally produced by channeling air flow along a groove in the back of the tongue up to the place of articulation, at which point it is focused against the sharp edge of the nearly clenched teeth, causing high-frequency turbulence.
It is generally only within sibilants that a palato-alveolar articulation is distinguished. In certain languages nasals or laterals may be said to be palato-alveolar, [citation needed] but it is unclear if such sounds can be consistently distinguished from alveolo-palatals and palatalized alveolars. Even in the case of sibilants, palato ...
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 alveolar, which means it is articulated with either the tip or the blade of the tongue at the alveolar ridge, termed respectively apical and laminal.
However, the palato-alveolar sibilants in Northwest Caucasian languages such as the extinct Ubykh have the tongue tip resting directly against the lower teeth rather than in the hollowed area. Ladefoged and Maddieson [ 4 ] term it a " closed laminal postalveolar" articulation, which gives the sounds a quality that JC Catford describes as ...
Features of the voiceless palato-alveolar fricative: Its manner of articulation is sibilant fricative, which means it is generally produced by channeling air flow along a groove in the back of the tongue up to the place of articulation, at which point it is focused against the sharp edge of the nearly clenched teeth, causing high-frequency ...
alveolo-palatal sibilant fricatives [ɕ, ʑ]. Features of the voiceless alveolo-palatal fricative: Its manner of articulation is sibilant fricative, which means it is generally produced by channeling air flow along a groove in the back of the tongue up to the place of articulation, at which point it is focused against the sharp edge of the nearly clenched teeth, causing high-frequency turbulence.