Voiceless dental and alveolar trills are a type of consonantal sound. They differ from their cognate 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.
Features
Features of a voiceless alveolar trill: • 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. ==Occurrence==
A 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 a voiceless alveolar fricative trill: • Its place of articulation is laminalalveolar, which means it is articulated with the blade of the tongue at the alveolar ridge. Occurrence ==See also==