Palatal fricatives are relatively rare phonemes, and only 5% of the world's languages have /ç/ as a phoneme.[1] The sound further occurs as an allophone of /x/ (e.g. in German or Greek), or, in other languages, of /h/ in the vicinity of front vowels.
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 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 exclusively allowed to escape through the mouth.
It is a central consonant, which means it is produced by directing the airstream along the center of the tongue, rather than to the sides.
May be alveolo-palatal [ɕ] instead.[2] Before /j/, aspiration of /p,t,k/ is realized as devoicing and fortition of /j/.[2] Note, however, that the sequence /tj/ is normally realized as an affricate [t͡ɕ].[3] See Danish phonology
Occurs in words where /h/ comes before /j/ due to h-prothesis of the original word, i.e. /jaɪ̯θ/iaith'language' becomes ei hiaith'her language', resulting in /j/i → /ç/hi.[21] See Welsh phonology
There is also a voiceless post-palatal fricative in some languages, which is articulated slightly farther back compared with the place of articulation of the prototypical voiceless palatal fricative, though not as back as the prototypical voiceless velar fricative. The International Phonetic Alphabet does not have a separate symbol for that sound, though it can be transcribed as ⟨ç̠⟩, ⟨ç˗⟩ (both symbols denote a retracted ⟨ç⟩) or ⟨x̟⟩ (advanced ⟨x⟩).
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 post-palatal, also called retracted palatal, backed palatal, palato-velar, pre-velar, advanced velar or front(ed-)velar, which means it is articulated between the position of palatal consonants and velar consonants.
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 exclusively allowed to escape through the mouth.
It is a central consonant, which means it is produced by directing the airstream along the center of the tongue, rather than to the sides.
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