The voiceless alveolar trill differs from the voiced alveolar trill/r/ only by the vibrations of the vocal cord. It occurs in a few languages, usually alongside the voiced version, as a similar phoneme or an allophone.
Proto-Indo-European *sr developed into a sound spelled ⟨ῥ⟩, with the letter for /r/ and the diacritic for /h/, in Ancient Greek. It was probably a voiceless alveolar trill and became the regular word-initial allophone of /r/ in standard Attic Greek that has disappeared in Modern Greek.
PIE *srew- > Ancient Greek ῥέω "flow", possibly [r̥é.ɔː]
Features
Features of the voiceless alveolar trill:
Its manner of articulation is trill, which means it is produced by directing air over an articulator so that it vibrates.
Its place of articulation is dental, alveolar or post-alveolar, which means it is articulated behind upper front teeth, at the alveolar ridge or behind the alveolar ridge. It is most often apical, which means that it is pronounced with the tip of the tongue.[1]
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 air is allowed to escape through the mouth only.
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.
The airstream mechanism is pulmonic, which means it is articulated by pushing air solely with the intercostal muscles and abdominal muscles, as in most sounds.
Contrasts with /r/: нарня [ˈnarnʲæ] "short grass". It has the palatalized counterpart /r̥ʲ/: марьхне [ˈmar̥ʲnʲæ] "these apples", but марьня [ˈmarʲnʲæ] "little apple"
The voiceless alveolar fricative trill is not known to occur as a phoneme in any language, except possibly the East Sakhalin dialect of Nivkh. It occurs allophonically in Czech.
Features
Features of the voiceless alveolar fricative trill:
Its manner of articulation is fricative trill, which means it is a non-sibilant fricative and a trill pronounced simultaneously.
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 air is allowed to escape through the mouth only.
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.
Allophone of /r̝/ after voiceless consonants for speakers that do not merge it with /ʐ/. Present in areas from Starogard Gdański to Malbork and those south, west and northwest of them, area from Lubawa to Olsztyn to Olecko to Działdowo, south and east from Wieleń, around Wołomin, southeast from Ostrów Mazowiecka and west from Siedlce, from Brzeg to Opole and those north of them, and roughly from Racibórz to Nowy Targ. Most speakers, including speakers of standard Polish, pronounce it the same as /ʂ/, and speakers maintaining the distinction (which is mostly the elderly) sporadically do so too.
Asu, Eva Liina; Teras, Pire (2009), "Estonian", Journal of the International Phonetic Association, 39 (3): 367–372, doi:10.1017/s002510030999017x
Dankovičová, Jana (1999), "Czech", Handbook of the International Phonetic Association: A guide to the use of the International Phonetic Alphabet, Cambridge: Cambridge University Press, pp. 70–74, ISBN 0-521-65236-7
Danyenko, Andrii; Vakulenko, Serhii (1995), Ukrainian, Lincom Europa, ISBN 9783929075083
Emeneau, Murray Barnson (1970), Dravidian Comparative Phonology: A Sketch, Chidambaram, Tamil Nadu, India: Annamalai University
Fabiánová, Martina (2011), Srovnání české a norské fonetiky(PDF)
Haspelmath, Martin (1993), A Grammar of Lezgian, Mouton Grammar Library, vol. 9, Berlin; New York: Mouton de Gruyter, ISBN 3-11-013735-6
Krishnamurti, Bhadriraju (2003-01-16). The Dravidian Languages. Cambridge University Press. doi:10.1017/cbo9780511486876. ISBN 978-0-521-77111-5. S2CID 62636490.
Peters, Jörg (2006), "The dialect of Hasselt", Journal of the International Phonetic Association, 36 (1): 117–124, doi:10.1017/S0025100306002428
Regnier, Sue (1993), "Quiegolani Zapotec Phonology", Work Papers of the Summer Institute of Linguistics, 37, University of Dakota: 37–63
Šimáčková, Šárka; Podlipský, Václav Jonáš; Chládková, Kateřina (2012), "Czech spoken in Bohemia and Moravia" (PDF), Journal of the International Phonetic Association, 42 (2): 225–232, doi:10.1017/S0025100312000102
Terrill, Angela (2002), Dharumbal: The Language of Rockhampton, Australia, Canberra: Pacific Linguistics, ISBN 0-85883-462-6