Konsonan paska rongga-gigi
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Konsonan paska rongga-gigi atau Konsonan postalveolar adalah Tempat artikulasi Konsonan dengan ujung lidah atau menekan di belakang dari artikulasi alveolar. Artikulasinya adalah lebih jauh ke belakang dalam mulut daripada konsonan alveolar, yang berada dipunggungan itu sendiri, tetapi tidak sejauh langit-langit keras, tempat artikulasi konsonan palatal. Contoh konsonan postalveolar adalah konsonan palato-alveolar Inggris [ʃ] [tʃ] [ʒ] [dʒ], seperti dalam kata "sheep", "'chill", "vision", dan "jump", masing-masing.
Ada banyak jenis suara postalveolar—terutama di antara sibilan. Tiga tipe utama adalah palato-alveolar (seperti [ʃ], dengan palatalisasi lemah), alveolo-palatal (seperti [ɕ], sangat palatal), dan retrolfeks (seperti [ʂ], tidak bagus). Subtipe palato-alveolar dan alveolo-palatal biasanya dihitung sebagai "palatal" dalam fonologi karena mereka jarang kontras dengan konsonan langit-langit yang sebenarnya.
Untuk sebagian besar suara yang melibatkan lidah, tempat artikulasi dapat diidentifikasi secara memadai hanya dengan menentukan titik kontak di bagian atas mulut (misalnya, konsonan velar melibatkan kontak pada langit-langit lunak dan konsonan gigi melibatkan gigi), bersama dengan artikulasi sekunder seperti palatalisasi (mengangkat badan lidah) atau labialisasi (membulatkan bibir ).
Namun, di antara sibilan, terutama sibilan postalveolar, ada sedikit perbedaan dalam bentuk lidah dan titik kontak pada lidah itu sendiri, yang sesuai dengan perbedaan besar dalam suara yang dihasilkan. Misalnya, frikatif alveolar [s] dan tiga frikatif postalveolar [ɕ ] sangat berbeda dalam nada dan ketajaman; urutan [s ] sesuai dengan nada yang semakin rendah dan suara yang lebih tumpul (kurang "mendesis" atau menusuk). ([s] adalah nada paling tinggi dan paling menusuk, itulah alasan mengapa desisan terdengar seperti "Sssst!" atau "Psssst!" biasanya digunakan untuk menarik perhatian seseorang). Akibatnya, perlu untuk menentukan banyak subtipe tambahan.
Perbedaan utam adalah bentuk dari lidah, yang korespon ke perbedaan derajat dari palatalisasi (raising of the front of the tongue). From least to most palatalized, they are retroflex (such as [ʂ ʐ], unpalatalized); palato-alveolar (such as [ʃ ʒ], weakly palatalized); and alveolo-palatal (such as [ɕ ʑ], strongly palatalized). The increasing palatalization corresponds to progressively higher-pitched and sharper-sounding consonants.
Less technically, the retroflex consonant [ʂ] sounds somewhat like a mixture between the regular English [ʃ] of "ship" and the "h" at the beginning of "heard", especially when it is pronounced forcefully and with a strong American "r". The alveolo-palatal consonant [ɕ] sounds like a strongly palatalized version of [ʃ], somewhat like "nourish you".
Palato-alveolar sounds are normally described as having a convex (a bunched-up or domed) tongue. The front, central part of the tongue is somewhat raised compared to the tip, back and sides, which gives it a weak palatalization. For retroflex sounds, the tongue shape is either concave (usually when apical or subapical, made with the tip of the tongue) or flat (usually when laminal, made with the area behind the tongue tip). For alveolo-palatal sounds, the front half of the tongue is flat and raised so that it closely parallels the upper surface of the mouth, from the teeth to the hard palate. Behind that is a sudden convex bend.
The following table shows the three types of postalveolar sibilant fricatives defined in the IPA:
|Voiceless palato-alveolar sibilant||English||shin||[ʃɪn]||shin||Voiced palato-alveolar sibilant||English||vision||[vɪʒən]||vision|
|Voiceless alveolo-palatal sibilant||Mandarin||小 (xiǎo)||[ɕiɑu˨˩˦]||small||Voiced alveolo-palatal sibilant||Polish||zioło||[ʑɔwɔ]||herb|
|voiceless retroflex sibilant||Mandarin||上海 (Shànghǎi)||[ʂɑ̂ŋ.xàɪ]||Shanghai||voiced retroflex sibilant||Russian
Point of tongue contact (laminal, apical, subapical)Sunting
A second variable is whether the contact occurs with the very tip of the tongue (an apical articulation [ʃ̺]). With the surface just above the tip, the blade of the tongue (a laminal articulation [ʃ̻]), or with the underside of the tip (a subapical articulation). Apical and subapical articulations are always "tongue-up", with the tip of the tongue above the teeth, and laminal articulations are often "tongue-down", with the tip of the tongue behind the lower teeth.
The upward curvature of the tongue tip to make apical or subapical contact renders palatalization more difficult so domed (palato-alveolar) consonants are not attested with subapical articulation and fully palatalized (such as alveolo-palatal) sounds occur only with laminal articulation. Also, the apical-laminal distinction among palato-alveolar sounds makes little (although presumably non-zero) perceptible difference; both articulations, in fact, occur among English-speakers.
As a result, the differing points of tongue contact (laminal, apical and subapical) are significant largely for retroflex sounds. Retroflex sounds can also occur outside of the postalveolar region, ranging from as far back as the hard palate to as far forward as the alveolar region behind the teeth. Subapical retroflex sounds are often palatal (and vice versa), which occur particularly in the Dravidian languages.
Position of tongue tip (laminal "closed")Sunting
There is an additional distinction that can be made among tongue-down laminal sounds, depending on exactly where behind the lower teeth the tongue tip is placed. A bit behind the lower teeth is a hollow area (or pit) in the lower surface of the mouth. When the tongue tip rests in the hollowed area, there is an empty space below the tongue (a sublingual cavity), which results in a relatively more "hushing" sound. When the tip of the tongue rests against the lower teeth, there is no sublingual cavity, resulting in a more "hissing" sound. Generally, the tongue-down postalveolar consonants have the tongue tip on the hollowed area (with a sublingual cavity), whereas for the tongue-down alveolar consonants, the tongue tip rests against the teeth (no sublingual cavity), which accentuates the hissing vs. hushing distinction of these sounds.
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 term it a "closed laminal postalveolar" articulation, which gives the sounds a quality that Catford describes as "hissing-hushing" sounds. Catford transcribes them as 〈ŝ, ẑ〉 (that is not IPA notation; the obsolete IPA letters 〈ʆ, ʓ〉 have occasionally been resurrected for these sounds).
A laminal "closed" articulation could also be made with alveolo-palatal sibilants and a laminal "non-closed" articulation with alveolar sibilants, but no language appears to do so. In addition, no language seems to have a minimal contrast between two sounds based only on the "closed"/"non-closed" variation, with no concomitant articulatory distinctions (for all languages, including the Northwest Caucasian languages, if the language has two laminal sibilants, one of which is "closed" and the other is "non-closed", they will also differ in some other ways).
A few languages distinguish three different postalveolar sibilant tongue shapes (/ʂ/ /ʃ/ /ɕ/) such as the Sino-Tibetan Northern Qiang and Southern Qiang, which make such a distinction among affricates (but only a two-way distinction among fricatives) and the Northwest Caucasian languages Ubykh (now extinct) and Abkhaz. More common are languages such as Mandarin Chinese and Polish, which distinguish two postalveolar sibilants, typically /ʂ/ /ɕ/ since they are maximally distinct.
The attested possibilities, with exemplar languages, are as follows. IPA diacritics are simplified, and some articulations would require two diacritics to be fully specified, but only one is used to keep the results legible without the need for OpenType IPA fonts. Also, Peter Ladefoged, whose notation is used here, has resurrected an obsolete IPA symbol, the under dot, to indicate the apical postalveolar, which is normally included in the category of retroflex consonants. The notation s̠, ṣ is sometimes reversed, and either may also be called 'retroflex' and written ʂ.
|IPA||Place of articulation||Exemplifying languages|
|[s̠ z̠]||laminal flat postalveolar (laminal retroflex)||Polish sz, rz, cz, dż, Mandarin sh, zh, ch|
|[ṣ ẓ]||apical postalveolar (apical retroflex)||Ubykh, Toda|
|[ʃ ʒ]||domed postalveolar (palato-alveolar)||English sh, zh (may be either laminal or apical)|
|[ʃ̻ ʒ̻]||laminal domed postalveolar||Toda|
|[ɕ ʑ]||laminal palatalized postalveolar (alveolo-palatal)||Mandarin q, j, x, Polish ć, ś, ź, dź, Ubykh|
|[ŝ ẑ]||laminal closed postalveolar||Ubykh|
|[ʂ ʐ]||subapical postalveolar or palatal (subapical retroflex)||Toda|
Non-sibilant sounds can also be made in the postalveolar region, the number of acoustically distinct variations is then significantly reduced. The primary distinction for such sounds is between laminal palatalized and apical retroflex non-palatalized. (Subapical retroflex non-sibilants also occur but tend to be palatal, as for sibilants.)
Retroflex stops, nasals and laterals (like [ʈ ɳ ɭ]) occur in a number of languages across the world such as in South Asian languages such as Hindi and various East Asian languages such as Vietnamese. The sounds are fairly rare in European languages but occur, for example, in Swedish; they are then often considered to be allophones of sequences such as /rn/ or /rt/. Also, for some languages that distinguish "dental" vs. "alveolar" stops and nasals, they are actually articulated nearer to prealveolar and postalveolar, respectively.
The normal rhotic consonant (r-sound) in American English is a retroflex approximant [ɻ] (the equivalent in British English is an alveolar approximant [ɹ]). Retroflex rhotics of various sorts, especially approximants and flaps occur commonly in the world's languages. Some languages also have retroflex trills. Tamil and Malayalam have two trills, at least for many speakers, [r̟] vs. [r̠], the latter of which being retroflex. Toda is particularly unusual in that it has six trills, including a palatalized/non-palatalized distinction and a three-way place distinction among dental, alveolar and retroflex trills.
Palatalized postalveolar non-sibilants are usually considered to be alveolo-palatal. Some non-sibilant sounds in some languages are said to be palato-alveolar rather than alveolo-palatal, but in practice, it is unclear if there is any consistent acoustic distinction between the two types of sounds.
In phonological descriptions, alveolo-palatal postalveolar non-sibilants are usually not distinguished as such but are considered to be variants of either palatal non-sibilants (such as [c ɲ ʎ] or of palatalized alveolar non-sibilants (such as [tʲ nʲ lʲ]). Even the two types are often not distinguished among nasals and laterals, as almost all languages have only one palatalized/palatal nasal or lateral in their phonemic inventories. For example, the sound described as a "palatal lateral" in various Romance languages and often indicated as /ʎ/ is most often alveolo-palatal [ḻʲ] (like in Catalan and Italian) and sometimes a palatalized alveolar [lʲ], such as in some northern Brazilian Portuguese dialects.
The IPA does not have specific symbols for alveolo-palatal non-sibilants, but they can be denoted using the advanced diacritic like 〈c̟ ɲ̟ ʎ̟〉. Sinologists often use special symbols for alveolo-palatal non-sibilants, 〈ȶ ȵ ȴ〉, created by analogy with the curls used to mark alveolo-palatal sibilants. However, the actual sounds indicated using these symbols are often palatal or palatalized alveolar rather than alveolo-palatal, like the variation for symbols like [ɲ ʎ]. The decision to use the special alveolo-palatal symbols in sinology is largely based on distributional similarities between the sounds in question and the alveolo-palatal sibilants, which are prominent in many East Asian languages.
However, a few languages distinguish alveolo-palatal sounds from other palatalized non-sibilants in the dental-to-palatal region. Many conservative dialects of Irish in fact have a three-way distinction among palatalized nasals between dorsal palatal [ɲ], laminal alveolo-palatal [ṉʲ], and apical palatalized alveolar [nʲ]. That is typical with oppositions among similar sounds in a single language, the sounds being maximally different in that each one differs both in the point of contact on the tongue (dorsal vs. laminal vs. apical) and the roof of the mouth (palatal vs. postalveolar vs. alveolar from all others). The other dialects have lost one of the two palatalized coronals but still have a two-way distinction. A similar distinction between palatal [ɲ] and alveolo-palatal [ṉʲ] exists in some nonstandard forms of Malayalam.
Some languages distinguish palatalized (alveolo-palatal) and non-palatalized (retroflex) postalveolar nasals and/or laterals.
Some Australian languages distinguish four coronal nasals and laterals: laminal dental [n̪ l̪], apical alveolar [n l], laminal postalveolar (palatalized) [ṉʲ ḻʲ], and apical postalveolar (retroflex) [ɳ ɭ].
The nonstandard Malayalam dialects mentioned above have five acute (including four coronal) nasals: laminal dental [n̪], apical alveolar [n], laminal postalveolar (palatalized) [ṉʲ], subapical palatal (retroflex) [ɳ], and dorsal palatal (palatalized) [ɲ] (in addition to labial [m] and velar [ŋ]). Standard Malayalam lacks the laminal palatalized postalveolar.
The conservative Irish dialects mentioned above also have five acute nasals, again including four coronal; however, only four different primary articulations are involved, as a secondary velarized/palatalized distinction is at play. The sounds in question are laminal dental velarized [n̪ˠ], apical alveolar velarized [nˠ], apical alveolar palatalized [nʲ], laminal postalveolar (palatalized) [ṉʲ], and dorsal palatal [ɲ] (in addition to labial velarized [mˠ], labial palatalized [mʲ] and velar [ŋ]). The eight sounds participate in four velarized/palatalized pairs: [mˠ mʲ]; [n̪ˠ ṉʲ]; [nˠ nʲ]; [ŋ ɲ]. Other dialects have variously reduced the four coronal nasals to three or two.
Decak paska rongga-gigiSunting
Ada dua tipe decak paska rongga-gigi yang dapat terjadi, umumnya dideskripsikan sebagai "paska rongga-gigi" dan "langit-langit", tetapi akan mungkin secara akurat dideskripsikan sebagai apikal dan laminal paska rongga-gigi, berurut:
|decak Apikal (paska) rongga-gigi||Nama||!oas||[k͡!oas]||rongga|
|Decak Laminal paska rongga-gigi||!Kung||ǂua||[k͡ǂwa]||untuk meniru|
- The Toda language consistently uses a laminal articulation for its palato-alveolar sibilants, which presumably makes the sound a bit "sharper", more like the alveolo-palatal sibilants, increasing the perceptual difference from the two types of retroflex sibilants that also occur in Toda.
- Ladefoged, Peter; Maddieson, Ian (1996). The Sounds of the World's Languages. Oxford: Blackwell. ISBN 0-631-19814-8.
|IPA: Konsonan tekanan paru-paru|