phon- combining form
before vowel before unstressed syllable BrE AmE ¦fəʊn- ¦fɒn- AmE ¦foʊn
▷ — phoniatric ˌfəʊn i ˈætr ɪk ◂ ˌfɒn- AmE ˌfoʊn-
before stressed syllable fə ʊ ˈn+ AmE foʊ ˈn+
▷ — phonendoscope fə ʊ ˈnend ə skəʊp AmE foʊ ˈnend ə skoʊp
phon- combining form
before vowel before unstressed syllable BrE AmE ¦fəʊn- ¦fɒn- AmE ¦foʊn
▷ — phoniatric ˌfəʊn i ˈætr ɪk ◂ ˌfɒn- AmE ˌfoʊn-
before stressed syllable fə ʊ ˈn+ AmE foʊ ˈn+
▷ — phonendoscope fə ʊ ˈnend ə skəʊp AmE foʊ ˈnend ə skoʊp
Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012