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In descriptions of phonetics and phonology, the manner and place of articulation of a speech sound may be specified relative to some point of comparison. For example, as a consequence of velar palatalization the English consonant /k/ is fronted before the vowel /iː/, compared to the articulation of /k/ before other vowels, and in many places, the vowel /uː/ is fronted.
The relative position of a sound may be described as advanced (fronted), retracted (backed), raised, lowered, centralized, or mid-centralized. The latter two terms are only used with vowels, and are marked in the International Phonetic Alphabet with diacritics over the vowel letter. The others are used with consonants and vowels, and are marked with iconic diacritics under the letter. Another dimension of relative articulation that has IPA diacritics is the degree of roundedness, more rounded and less rounded.
Contents
* 1 Advanced
* 2 Retracted
* 3 Raised and lowered
o 3.1 Raised and lowered vowels
o 3.2 Raised and lowered consonants[hide]
* 4 Centralized vowels
o 4.1 Mid-centralized vowel
* 5 More and less rounded
* 6 References
* 7 See also
[edit] Advanced
Places of
articulation
• Labial
Bilabial
Labial-velar
Labial-alveolar
Labiodental
Dentolabial
• Bidental
• Coronal
Linguolabial
Interdental
Dental
Denti-alveolar
Alveolar
Apical
Laminal
Subapical
Postalveolar
Alveolo-palatal
Retroflex
• Dorsal
Palatal
Labial-palatal
Velar
Uvular
Uvular-epiglottal
• Radical
Pharyngeal
Epiglotto-pharyngeal
Epiglottal
• Glottal
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A fronted or advanced sound is one that is pronounced farther to the front of the vocal tract than some reference point. The diacritic for this in the IPA is the subscript plus, [ ̟]. Both consonants and vowels may be fronted.
In English, the back vowel /u/ is farther forward than what is normally indicated by the IPA letter . This fronting may be shown explicitly, especially within a narrow transcription: [u̟]. Whether this is as far front as the central vowel [ʉ], or somewhere between [u] and [ʉ], may need to be clarified verbally.
In General American English, the /t/ in the word eighth is farther front than normal, due to assimilation with the interdental consonant /θ/, and may be transcribed as [eɪt̟θ].
The difference between a fronted and non-fronted consonant can be heard in the English words key [k̟ʰi] and coo [kʰu], where the /k/ in key is fronted under the influence of the front vowel /i/.
In verbal description, the prefix pre- may be used to indicated fronting, especially in the terms prepalatal and prevelar. Otherwise phrases like "fronted u" may be used.
[edit] Retracted
A retracted or backed sound is one that is pronounced farther to the back of the vocal tract than some reference point. The diacritic for this in the IPA is the minus sign below < ̠>, as opposed to the plus sign below < ̟> denoting advanced. Both consonants and vowels may be marked as retracted.
In English, the plosive in the affricate /tʃ/, as in the word church, is farther back than an alveolar /t/ due to assimilation with the postalveolar fricative /ʃ/. In narrow transcription, /tʃ/ may be transcribed [t̠ʃʰ].
Languages may have phonemes that are farther back than the nearest IPA symbol. For example, Polish sz is a postalveolar sibilant. While this is often transcribed as [ʃ], it is not domed (partially palatalized) the way a prototypical [ʃ] is. A more precise transcription therefore is [s̠]. Similarly, the velar consonants in Kwakiutl are actually postvelar; that is, pronounced farther back than a prototypical velar, between velar [k] and uvular [q], and is thus transcribed [k̠].
Officially, the IPA symbol [a] stands for a front vowel. However, in most languages where it is used, /a/ actually stands for a central vowel. If precision is desired, this may also be indicated with the minus sign ([a̠]), or possibly with the centralized diacritic ([ä]); yet another possible notation is [ɐ] with the lowered diacritic ([ɐ̞]).
Either the prefix post- may be used to indicated retraction, as above, or phrases like "retracted i" may be used.
[edit] Raised and lowered
A raised sound is articulated with the tongue or lip raised higher than some reference point. In the IPA this is indicated with the uptack diacritic [ ̝].
A lowered sound is articulated with the tongue or lip lowered (the mouth more open) than some reference point. In the IPA this is indicated with the downtack diacritic [ ̞]. Both consonants and vowels may be marked as raised or lowered.
When there is no room for the tack under a letter, it may be written after: [ɭ˔], [ɣ˕].
[edit] Raised and lowered vowels
In the case of a vowel, raising means that the vowel is closer, toward the top of the vowel chart. For example,
In other non-IPA transcription systems, raised vowels are indicated with the iconic upward-pointing arrowhead [˰] while lowered vowels have the downward arrowhead [˯]. Thus, IPA [e̝] is equivalent to [e˰], IPA [e̞] is equivalent to [e˯].
[edit] Raised and lowered consonants
Manners of articulation
Obstruent
Stop
Affricate
Fricative
Sibilant
Sonorant
Nasal
Flaps/Tap
Trill
Approximant
Liquid
Vowel
Semivowel
Lateral
Airstreams
Ejective
Implosive
Click
Alliteration
Assonance
Consonance
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With consonants, raising and lowering changes the manner of articulation to something with more or less stricture. For example, raised approximants and trills are fricatives, whereas lowered fricatives are approximants. The ambiguous symbols for rear approximant/fricatives may be specified as fricatives with the raising diacritic, [ʁ̝, ʕ̝, ʢ̝], or as approximants with the lowering diacritic, [ʁ̞, ʕ̞, ʢ̞]. In Spanish, the "weak" allophones of the voiced stops are generally transcribed as fricatives even though they are approximants, or intermediate between fricative and approximant. This may be partially due to the fact there is only a dedicated IPA symbol one of them, the velar approximant. More precise transcription will use the fricative symbols with the lowering diacritic, [β̞, ð̞, ɣ˕]. Czech, on the other hand, requires the opposite: Its fricated trill, which is a separate phoneme, may be transcribed as a raised trill, [r̝]. Similarly, the non-sibilant coronal fricative is written [ɹ̝], and the voiceless velar lateral fricative as [ʟ̝̊]. (A dedicated letter for this sound, , is not part of the IPA.)
From most open (least stricture) to most close (most stricture), there are several independent relationships among speech sounds. Open vowel > mid vowel > close vowel > approximant > fricative > plosive is one; flap > stop is another; and trill > (trilled) fricative yet another. The IPA chart has been organized so that the raising diacritic moves the value of a letter through these series toward the top of the chart, and the lowering diacritic toward the bottom of the chart, but this only works for some of the consonants. While it would be convenient if all consonants could be so ordered, consonants are too diverse for a single dimension to capture their relationships. In addition, many of the points along the series may be nasalized or lateralized as well, and these parameters are independent of stricture.
Examples of stricture series Oral Nasal Flap Trill Lateral
Stop ɟ ɲ d t͡ɬ
Fricative ʝ ʝ̃ r̝ ɬ
Approximant / Vibrant j ȷ̃ ɾ r l
Close vowel i ĩ (N/A)
Close-mid vowel e ẽ
Open-mid vowel ɛ ɛ̃
Near-open vowel æ æ̃
Open vowel a ã
[edit] Centralized vowels
For non-lateral consonants, see central or medial consonants.
Vowels
v • d • e
See also: IPA, Consonants
Front Near- front Central Near- back Back
Close
Blank vowel trapezoid.svg
i · y
ɨ · ʉ
ɯ · u
ɪ · ʏ
ɪ̈ · ʊ̈
ʊ
e · ø
ɘ · ɵ
ɤ · o
ə
ɛ · œ
ɜ · ɞ
ʌ · ɔ
æ
ɐ
a · ɶ
ɑ · ɒ
Near-close
Close-mid
Mid
Open-mid
Near-open
Open
Where symbols appear in pairs, the one to the right represents
a rounded vowel. Vowel length is indicated by appending ː
A centralized vowel is a vowel that is more central than some point of reference, or that has undergone a shift in this direction. The diacritic for this in the International Phonetic Alphabet is the dieresis, [ ¨ ].
For example, to transcribe rounded and unrounded near-close central vowels, the symbols [ɪ̈, ʊ̈] may be used. In other (non-IPA) transcription systems, <ɪ, ʊ> will be seen instead of [ɪ̈, ʊ̈] (by analogy with [ɨ, ʉ]). Before the letters [ɘ, ɵ, ɜ, ɞ] were added to the IPA in 1993, the symbols [ë, ö, ɛ̈, ɔ̈] were used for these near-schwa values. [ë, ö, ɛ̈, ɔ̈] would now be assumed to represent articulations intermediate between [e, o, ɛ, ɔ] and [ɘ, ɵ, ɜ, ɞ]. Similarly, [ï, ÿ, ü, ɯ̈] would be intermediate between [i, y, u, ɯ] and [ɨ, ʉ].
In the majority of languages described as having an [a], the vowel is actually central, and would be better transcribed as [ä]. However, this symbol is not commonly used, perhaps because it disagrees with the sound value of umlaut ä in the Germanic languages.
Instead of the diacritic for centralization, the advanced or retracted diacritics may be used (an equivalent transcription of [ä] is retracted [a̠]), but the concept of centralization is convenient in cases where front and back vowels move toward each other, rather than all advancing or retracting in the same direction.
[edit] Mid-centralized vowel
A mid-centralized vowel is a vowel closer to the mid-point of the vowel space than some point of reference. That is, it is closer to the mid-central vowel schwa [ə]; it is not just centralized, but also raised or lowered. The diacritic used to mark this in the International Phonetic Alphabet is the over-cross, [ ̽].
In most languages, vowels become mid-centralized when spoken quickly, and in some, such as English and Russian, many vowels are also mid-centralized when unstressed. This is a general characteristic of vowel reduction.
Even when fully articulated, the vowels of a language may be on the schwa side of a cardinal IPA vowel. One example of this is Lisbon Portuguese, where unstressed e is a near-close near-back unrounded vowel. That is, it lies between the close back unrounded vowel [ɯ] and schwa, where [ʊ] sits in the vowel chart, but unlike [ʊ], not rounded. It may be written [ɯ̽], as in pegar [pɯ̽ˈɡaɾ] "to hold".
[edit] More and less rounded
There are also diacritics, respectively [ ̹] and [ ̜] (right and left half-rings), to indicate greater or lesser degrees of rounding. For example, the English near-close near-back vowel often has very little rounding, and may be transcribed [ʊ̜]. In Assamese, on the other hand, the open back rounded vowel is much more rounded than is typical for a low vowel, and may be transcribed [ɒ̹].
These diacritics are sometimes also used with consonants to indicate degrees of labialization. For example, in the Athabaskan language Hupa, voiceless velar fricatives distinguish three degrees of labialization, transcribed either [x x̹ xʷ] or [x x̜ʷ xʷ].
The Extensions to the IPA have two additional symbols for degrees of rounding: spread, as in [ə͍], and open-rounded, as in English [ʃœ] and [ʒœ].
[edit] References
Clark John, Yallop Collin, Fletcher Janet (2007). Introduction to Phonetics and Phonology. Oxford: Blackwell. pp. 22–26, 264–266.
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