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Alveolo-palatal fricative is a class of consonants in some oral languages. The consonants are sibilants, a variety of fricative. Their place of articulation is postalveolar. They differ in voicing.
The voiceless alveolo-palatal fricative and voiced alveolo-palatal fricative are written ⟨ɕ⟩ and ⟨ʑ⟩ in the International Phonetic Alphabet.
![alveolo-palatal sibilant fricatives [c, z] Alveolopalatal fricative.svg](http://upload.wikimedia.org/wikipedia/commons/thumb/9/90/Alveolopalatal_fricative.svg/220px-Alveolopalatal_fricative.svg.png)
Features of alveolo-palatal fricatives: [1]
| IPA | Description | Example | |||
|---|---|---|---|---|---|
| Language | Orthography | IPA | Meaning | ||
| ɕ | Voiceless alveolo-palatal sibilant | Mandarin | 小 (xiǎo) | [ɕiɑu˨˩˦] | small |
| ʑ | Voiced alveolo-palatal sibilant | Polish | zioło | [ʑɔwɔ] | herb |
The field of articulatory phonetics is a subfield of phonetics that studies articulation and ways that humans produce speech. Articulatory phoneticians explain how humans produce speech sounds via the interaction of different physiological structures. Generally, articulatory phonetics is concerned with the transformation of aerodynamic energy into acoustic energy. Aerodynamic energy refers to the airflow through the vocal tract. Its potential form is air pressure; its kinetic form is the actual dynamic airflow. Acoustic energy is variation in the air pressure that can be represented as sound waves, which are then perceived by the human auditory system as sound.
Sibilants are fricative consonants of higher amplitude and pitch, made by directing a stream of air with the tongue towards the teeth. Examples of sibilants are the consonants at the beginning of the English words sip, zip, ship, and genre. The symbols in the International Phonetic Alphabet used to denote the sibilant sounds in these words are, respectively,. Sibilants have a characteristically intense sound, which accounts for their paralinguistic use in getting one's attention.
Postalveolar or post-alveolar consonants are consonants articulated with the tongue near or touching the back of the alveolar ridge. Articulation is farther back in the mouth than the alveolar consonants, which are at the ridge itself, but not as far back as the hard palate, the place of articulation for palatal consonants. Examples of postalveolar consonants are the English palato-alveolar consonants, as in the words "ship", "'chill", "vision", and "jump", respectively.
The voiced palatal lateral approximant is a type of consonantal sound used in some spoken languages. The symbol in the International Phonetic Alphabet that represents this sound is ⟨ʎ⟩, a rotated lowercase letter ⟨y⟩, and the equivalent X-SAMPA symbol is L.
The voiced velar lateral approximant is a type of consonantal sound, used as a distinct consonant in a very small number of spoken languages in the world. The symbol in the International Phonetic Alphabet that represents this sound is ⟨ʟ⟩ a small capital version of the Latin letter l, and the equivalent X-SAMPA symbol is L\.
The palatal or palato-alveolar clicks are a family of click consonants found, as components of words, only in southern Africa. The tongue is nearly flat, and is pulled back rather than down as in the postalveolar clicks, making a sharper sound than those consonants. The tongue makes an extremely broad contact across the roof of the mouth, making correlation with the places of articulation of non-clicks difficult, but Ladefoged & Traill (1984:18) find that the primary place of articulation is the palate, and say that "there is no doubt that should be described as a palatal sound".
The voiced alveolo-palatal sibilant fricative is a type of consonantal sound, used in some spoken languages. The symbol in the International Phonetic Alphabet that represents this sound is ⟨ʑ⟩, and the equivalent X-SAMPA symbol is z\. It is the sibilant equivalent of the voiced palatal fricative.
The voiced palatal plosive or stop is a type of consonantal sound in some vocal languages. The symbol in the International Phonetic Alphabet that represents this sound is ⟨ɟ⟩, a barred dotless ⟨j⟩ that was initially created by turning the type for a lowercase letter ⟨f⟩. The equivalent X-SAMPA symbol is J\.
A voiced postalveolar 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, but it also describes the voiced postalveolar non-sibilant fricative, for which there are significant perceptual differences.
The voiced retroflex sibilant fricative is a type of consonantal sound, used in some spoken languages. The symbol in the International Phonetic Alphabet that represents this sound is ⟨ʐ ⟩, and the equivalent X-SAMPA symbol is z`. Like all the retroflex consonants, the IPA symbol is formed by adding a rightward-pointing hook extending from the bottom of a z.
The voiceless alveolo-palatal sibilant fricative is a type of consonantal sound, used in some spoken languages. The symbol in the International Phonetic Alphabet that represents this sound is ⟨ɕ⟩. It is the sibilant equivalent of the voiceless palatal fricative, and as such it can be transcribed in IPA with ⟨ç˖⟩.
A voiceless postalveolar fricative is a type of consonantal sound used in some spoken languages. The International Phonetic Association uses the term voiceless postalveolar fricative only for the sound, but it also describes the voiceless postalveolar non-sibilant fricative, for which there are significant perceptual differences.
The voiceless retroflex sibilant fricative is a type of consonantal sound used in some spoken languages. The symbol in the International Phonetic Alphabet that represents this sound is ⟨ʂ⟩ which is a Latin letter s combined with a retroflex hook. Like all the retroflex consonants, the IPA letter is formed by adding a rightward-pointing hook to the bottom of ⟨s⟩. A distinction can be made between laminal, apical, and sub-apical articulations. Only one language, Toda, appears to have more than one voiceless retroflex sibilant, and it distinguishes subapical palatal from apical postalveolar retroflex sibilants; that is, both the tongue articulation and the place of contact on the roof of the mouth are different.
In phonetics, alveolo-palatal consonants, sometimes synonymous with pre-palatal consonants, are intermediate in articulation between the coronal and dorsal consonants, or which have simultaneous alveolar and palatal articulation. In the official IPA chart, alveolo-palatals would appear between the retroflex and palatal consonants but for "lack of space". Ladefoged and Maddieson characterize the alveolo-palatals as palatalized postalveolars (palato-alveolars), articulated with the blade of the tongue behind the alveolar ridge and the body of the tongue raised toward the palate, whereas Esling describes them as advanced palatals (pre-palatals), the furthest front of the dorsal consonants, articulated with the body of the tongue approaching the alveolar ridge. These descriptions are essentially equivalent, since the contact includes both the blade and body of the tongue. They are front enough that the fricatives and affricates are sibilants, the only sibilants among the dorsal consonants.
The voiceless palato-alveolar sibilant affricate or voiceless domed postalveolar sibilant affricate is a type of consonantal sound used in some spoken languages. The sound is transcribed in the International Phonetic Alphabet with ⟨t͡ʃ ⟩, ⟨t͜ʃ ⟩⟨tʃ ⟩, or, in broad transcription, ⟨c⟩. The alternative commonly used in American tradition is ⟨č⟩. It is familiar to English speakers as the "ch" sound in "chip".
The voiceless palatal lateral fricative is a type of consonantal sound, used in a few spoken languages.
The voiceless alveolo-palatal sibilant affricate is a type of consonantal sound, used in some spoken languages. The symbols in the International Phonetic Alphabet that represent this sound are ⟨t͡ɕ⟩, ⟨t͜ɕ⟩, ⟨c͡ɕ⟩ and ⟨c͜ɕ⟩, and the equivalent X-SAMPA symbols are t_s\ and c_s\, though transcribing the stop component with ⟨c⟩ is rare. The tie bar may be omitted, yielding ⟨tɕ⟩ or ⟨cɕ⟩ in the IPA and ts\ or cs\ in X-SAMPA.
The palato-alveolar ejective affricate is a type of consonantal sound, used in some spoken languages. The sound is represented in the International Phonetic Alphabet with ⟨t͡ʃʼ⟩. In some languages it is equivalent to a palatal ejective.
The voiced alveolo-palatal sibilant affricate is a type of consonantal sound, used in some spoken languages. The symbols in the International Phonetic Alphabet that represent this sound are ⟨d͡ʑ⟩, ⟨d͜ʑ⟩, ⟨ɟ͡ʑ⟩ and ⟨ɟ͜ʑ⟩, and the equivalent X-SAMPA symbols are d_z\ and J\_z\, though transcribing the stop component with ⟨ɟ⟩ is rare. The tie bar may be omitted, yielding ⟨dʑ⟩ or ⟨ɟʑ⟩ in the IPA and dz\ or J\z\ in X-SAMPA.
The alveolo-palatal ejective fricative is a type of consonantal sound, used in some spoken languages. The symbol in the International Phonetic Alphabet that represents this sound is ⟨ɕʼ⟩.
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