A trill is made by the articulator being held in place and the airstream causing it to vibrate. Usually a trill vibrates for 2–3 contacts, but may be up to 5, or even more if geminate
However, trills may also be produced with only one contact. While single-contact trills are similar to taps and flaps
, a tap or flap differs from a trill in that it is made by a muscular contraction rather than airstream.
[ʩ] – velopharyngeal fricative
found in disordered speech sometimes involves trilling of the velopharyngeal port, producing a 'snort'.
The bilabial trill is uncommon. The coronal trill is most frequently alveolar
[r͇], but dental
articulations [r̪] and [r̠] also occur. An alleged retroflex trill
found in Toda
has been transcribed [ɽ] (that is, the same as the retroflex flap
), but might be less ambiguously written [ɽr], as only the onset is retroflex, with the actual trill being alveolar. The epiglottal trills are identified by the IPA as fricatives, with the trilling assumed to be allophonic
. However, analyzing the sounds as trills may be more economical.
There are also so-called strident vowels
which are accompanied by epiglottal trill.
The cells in the IPA chart for the velar
, (upper) pharyngeal
, and glottal
places of articulation are shaded as impossible. The glottis quite readily vibrates, but this occurs as the phonation
of vowels and consonants, not as a consonant of its own. Dorso-palatal and velar vibratory motions of the tongue are occasionally produced, especially during the release of dorsal stops,
and ingressive velar trills
occur in snoring, but not in normal speech. The upper pharyngeal tract cannot reliably produce a trill, but the epiglottis does, and epiglottal trills are pharyngeal in the broad sense.
A partially devoiced pre-uvular (i.e. between velar and uvular) fricative trill
[ʀ̝̊˖] has been reported to occur as coda
allophone of /ʀ/ in Limburgish
dialects of Maastricht
. It is in free variation with partially devoiced uvular fricative trill [ʀ̝̊
The Czech language
has two contrastive alveolar trills, one a fricative trill (written ř
in the orthography). In the fricative trill the tongue is raised, so that there is audible frication
during the trill, sounding a little like a simultaneous [r] and [ʐ] (or [r̥] and [ʂ] when devoiced). A symbol for this sound, [ɼ], has been dropped from the IPA, and it is now generally transcribed as a raised r
("Cool Mountain" Yi) has two "buzzed" or fricative vowels /i̝/, /u̝/ (written ṳ, i̤
) which may also be trilled, [ʙ̝], [r̝].
A nasal trill [r̃] has been described from some dialects of Romanian, and is posited as an intermediate historical step in rhotacism
. However, the phonetic variation of the sound is considerable, and it is not clear how frequently it is actually trilled.
typically consists of vibration of the uvula and the soft palate
(velum), which may be described as an ingressive
Like the uvular trill, the ingressive velic trill does not involve the tongue; it is the velum that passively vibrates in the airstream. The Speculative Grammarian
has proposed a jocular symbol for this sound (and also the sound used to imitate a pig's snort), a wide O with double dot (Ꙫ
), suggesting a pig's snout.
The Extensions to the IPA
identifies an egressive fricative pronounced with this same configuration, common with a cleft palate
, as velopharyngeal
[ʩ], and with accompanying uvular trill as [ʩ] ([ʩʀ
]) or  ().
trills are also possible. They may be pronounced by initiating [ɬ] or [ɮ] with an especially forceful airflow. There is no symbol for them in the IPA. Lateral coronal trills are sometimes used to imitate bird calls
, and are a component of Donald Duck talk
A labiodental trill
, [ʙ̪], is most likely to be lateral, but laterality is not distinctive among labial sounds.
trills are not known from any language, despite being easy to produce. They may occur as mimesis of a cat's purr.
Attested trilled consonants
(excluding secondary phonations and articulations)
Sounds in double parentheses are only attested from mimesis.
- ^ Sampson (1999), pp. 312–3.
- ^ University of Hawaii Working Papers in Linguistics, 1969, Volume 1, Parts 4–6, Page 115.
- ^ 'Velic' is the term in Pike (1948) for velopharyngeal: articulation between the upper surface of the velum and the back wall of the naso-pharynx (Bertil Malmberg & Louise Kaiser, 1968, Manual of phonetics, North-Holland, p. 325)
- ^ "SpecGram—Letters to the Editor". specgram.com.
- ^ Unicode support being implemented for 2021.
- Esling, John H. (2010), "Phonetic Notation", in Hardcastle, William J.; Laver, John; Gibbon, Fiona E. (eds.), The Handbook of Phonetic Sciences (2nd ed.), Wiley-Blackwell, pp. 678–702, doi:10.1002/9781444317251.ch18, ISBN 978-1-4051-4590-9
- Gussenhoven, Carlos; Aarts, Flor (1999), "The dialect of Maastricht" (PDF), Journal of the International Phonetic Association, University of Nijmegen, Centre for Language Studies, 29 (2): 155–166, doi:10.1017/S0025100300006526
- Heijmans, Linda; Gussenhoven, Carlos (1998), "The Dutch dialect of Weert" (PDF), Journal of the International Phonetic Association, 28 (1–2): 107–112, doi:10.1017/S0025100300006307
- Ladefoged, Peter; Maddieson, Ian (1996), The Sounds of the World's Languages, Oxford: Blackwell, ISBN 978-0-631-19815-4
- Ladefoged, Peter; Johnson, Keith (2010), A Course in Phonetics (6th ed.), Wadsworth, ISBN 978-1-42823126-9
- Sampson, Rodney (1999), Nasal Vowel Evolution in Romance, Oxford University Press, ISBN 0-19-823848-7
Last edited on 23 April 2021, at 23:15
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