EDIT Articulation

+ German [ɛr]
+ English [ɑ:]
+ French [ɛ:r]

+ Source //
Mangold, Max. Duden. Das Aussprachewörterbuch. 6. Auflage. Bibliographisches
Institut F. A. Brockhaus AG: Mannheim, 2005.

 FrauFriedrich 

EDIT International Phonetic Alphabet

+ Consonant
+ Sound example

+ Alternatives // unknown
+ Former versions // unknown
+ Origin // Latin alphabet, small letter

+ In the IPA since 1887
+ IPA number 122

+ This sound can be found in Albanian, Czech, Dutch, Esperanto, Finnish, Greek, Hindi, Hungarian, Icelandic, Italian, Persian, Polish, Portuguese, Russian, Slovak, Spanish and Swedish.


Synonyms

English
+ Official name in the IPA // ›voiced dental or alveolar trill‹
+ Nonstandard // rolled ›r‹


+ Source //
Principles of the International Phonetic Association, London, 1949. /
Journal of the International Phonetic Association, 1989. /
Wikipedia. Die Liste der IPA-Zeichen & History of the International Phonetic Alphabet. /
Handbook of the International Phonetic Association: A Guide to the Use of the International Phonetic Alphabet. /
Pullum, Geoffrey and William A. Ladusaw. Phonetic Symbol Guide. Second edition.

 FrauFriedrich