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Re:The Swedish phoneme notorious for having a dedicated IPA ... by jdmichal on Wednesday November 20, 2019 @04:58PM (#21589016)
Modern Greek uses /f/ also. It was only /ɸ/ for a brief transition period. Spanish, however, uses the voiced version /β/ as an alternation for /b/, hence <Cuba> /kuβa/. (This is sometimes described as a mumble, since it's not a very common sound in Indo-European languages and people don't know how to interpret it.)

https://en.wikipedia.org/wiki/Koine_Greek_phonology

(Click through the "stop consonant" sections.)

Re:The Swedish phoneme notorious for having a dedicated IPA ... by mcswell on Wednesday November 20, 2019 @10:33PM (#21591211)
FWIW, some (most? all? the one's I've heard, at any rate) Spanish dialects pronounce the letter 'f' as a voiceless bilabial fricative (I almost wrote 'phricative'). E.g. fotografia (sorry about the missing accent).

The letters 'b' and the 'v' are pronounced in Spanish as voiced bilabial fricatives after a vowel, and as stops after a nasal consonant (which in that position will be pronounced as [m]), and generally in utterance-initial position.