Voiceless alveolar trill
| Voiceless alveolar trill | |
|---|---|
| r̥ | |
| IPA number | 122 402A |
| Encoding | |
| X-SAMPA | r_0 |
| Sound | |
|
|
|
| Voiceless alveolar raised non-sonorant trill | |
|---|---|
| r̝̊ | |
| IPA number | 122 402A 429 |
| Encoding | |
| X-SAMPA | r_0_r |
A 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.
Features of the voiceless alveolar trill:
The voiceless alveolar raised non-sonorant trill is not known to occur as a phoneme in any language. However, it occurs allophonically in Czech.
Features of the voiceless alveolar raised non-sonorant trill:
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Wikipedia