EDIT Articulation

+ German [ˈʏpsilɔn]
+ English [wai]
+ French [iˈɡrɛk]

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

 FrauFriedrich 

EDIT International Phonetic Alphabet

+ Vowel
+ Example in German // Güte (gentleness) [ˈɡyːtə]
+ Sound example

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

+ In the IPA since 1887
+ IPA number 309

+ This sound can be found in Albanian, Basque, Chinese, Danish, Dutch, Estonian, Finnish, French, German, Hungarian, Korean, Mongolian and Turkish.

Synonyms

English
+ Official name in the IPA // ›close front rounded vowel‹
+ Nonstandard // long ›ü‹


+ 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